VAR-201110-0260
Vulnerability from variot - Updated: 2025-04-11 23:05Memory leak in Cisco IOS 15.0 through 15.1, when IPS or Zone-Based Firewall (aka ZBFW) is configured, allows remote attackers to cause a denial of service (memory consumption or device crash) via vectors that trigger many session creation flows, aka Bug ID CSCti79848. The problem is Bug ID CSCti79848 It is a problem.Service disruption by inducing the creation of a large number of sessions by a third party ( Memory consumption or device crash ) There is a possibility of being put into a state. Cisco IOS is prone to multiple remote denial-of-service vulnerabilities. An attacker can exploit these issues to cause an affected device to reload, denying service to legitimate users. These issues are being tracked by Cisco Bug IDs CSCti79848 and CSCto68554. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
Cisco Security Advisory: Cisco IOS Software IPS and Zone-Based Firewall Vulnerabilities
Advisory ID: cisco-sa-20110928-zbfw
Revision 1.0
For Public Release 2011 September 28 1600 UTC (GMT)
+--------------------------------------------------------------------
Summary
Cisco IOS Software contains two vulnerabilities related to Cisco IOS Intrusion Prevention System (IPS) and Cisco IOS Zone-Based Firewall features. These vulnerabilities are:
- Memory leak in Cisco IOS Software
- Cisco IOS Software Denial of Service when processing specially crafted HTTP packets
Cisco has released free software updates that address these vulnerabilities.
Workarounds that mitigate these vulnerabilities are not available.
This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20110928-zbfw.shtml.
Note: The September 28, 2011, Cisco IOS Software Security Advisory bundled publication includes ten Cisco Security Advisories. Each advisory lists the Cisco IOS Software releases that correct the vulnerability or vulnerabilities detailed in the advisory as well as the Cisco IOS Software releases that correct all vulnerabilities in the September 2011 Bundled Publication. The two vulnerabilities are independent of each other. Details to confirm affected configurations are provided below. To determine if a device is configured with Cisco IOS IPS, log into the device and issue the "show ip ips interfaces" CLI command. If the output shows an IPS rule either in the inbound or outbound direction set, then the device is vulnerable. This example, shows a device with an IPS rule set on Interface Gigabit Ethernet 0/0 in the inbound direction:
Router#show ip ips interfaces
Interface Configuration
Interface GigabitEthernet0/0
Inbound IPS rule is example_ips_rule
Outgoing IPS rule is not set
Router#
A device that is not configured for Cisco IOS IPS will return a
blank line. The following example shows a device on which Cisco
IOS IPS is not configured:
Router#show ip ips interfaces
Router#
To determine whether a device is configured with Zone-Based
Firewall, log into the device and issue the "show zone security"
CLI command. If the output shows a member interface under a zone
name, then the device is vulnerable. This example, shows a device
with Zone-Based Firewall rules configured on both
GigabitEthernet0/0 and GigabitEthernet0/1
Router#show zone security
zone self
Description: System defined zone
zone inside
Description: *** Inside Network ***
Member Interfaces:
GigabitEthernet0/0
zone outside
Description: *** Outside Network ***
Member Interfaces:
GigabitEthernet0/1
Router#
Note: The device is vulnerable if configured with Zone-Based
Firewall, regardless of the type of packet inspection being
performed.
-
Cisco IOS Software Denial of Service when processing specially crafted HTTP packets
A device is vulnerable if configured under the following circumstances:
- HTTP Layer 7 Application Control and Inspection and Cisco IOS IPS are enabled.
- HTTP Layer 7 Application Control and Inspection with match request arg regex parameter on the HTTP class map. This configuration is affected regardless if Cisco IOS IPS is enabled or not.
The device is not vulnerable under other configurations. A summary of different configurations and their affect by this vulnerability is provided below:
+--------------------------------------------------------+ | | Affected | | Configuration on Device | or not | | | Affected | |--------------------------------------------+-----------| | Only Cisco IOS IPS enabled | Not | | | Affected | |--------------------------------------------+-----------| | HTTP Layer 4 Stateful Inspection with | Not | | Cisco IOS IPS enabled | Affected | |--------------------------------------------+-----------| | HTTP Layer 4 Stateful Inspection with | Not | | Cisco IOS IPS disabled | Affected | |--------------------------------------------+-----------| | HTTP Layer 7 Application Control and | Affected | | Inspection with Cisco IOS IPS enabled | | |--------------------------------------------+-----------| | HTTP Layer 7 Application Control and | | | Inspection with match arg regex parameter. | Affected | | With or without Cisco IOS IPS enabled. | | |--------------------------------------------+-----------| | HTTP Layer 7 Application Control and | | | Inspection without match arg regex | Not | | parameter. With or without Cisco IOS IPS | Affected | | enabled. | | +--------------------------------------------------------+
The following example shows an affected device configured with HTTP Layer 7 Application Control and Inspection and Cisco IOS IPS enabled:
! ip ips name myips ! ip ips signature-category category all retired true category ios_ips basic retired false ! ! class-map type inspect match-any layer4-classmap match protocol http ! class-map type inspect http match-any layer7-classmap match request arg length gt 15 ! ! policy-map type inspect http layer7-policymap class type inspect http layer7-classmap reset log policy-map type inspect layer4-policymap class type inspect layer4-classmap inspect service-policy http layer7-policymap class class-default drop ! zone security inside description ** Inside Network ** zone security outside description ** Outside Network ** zone-pair security in2out source inside destination outside description ** Zone Pair - inside to outside ** service-policy type inspect layer4-policymap ! ! interface GigabitEthernet0/0 ip address 192.168.0.6 255.255.255.0 ip ips myips in zone-member security inside ! interface GigabitEthernet0/1 ip address 192.168.1.1 255.255.255.0 zone-member security outside !The following example shows an affected device configured with HTTP Layer 7 Application Control and Inspection with the match request arg regex parameter on the HTTP class map:
! parameter-map type regex example pattern [^\x00-\x80] ! class-map type inspect match-any layer4-classmap match protocol http ! class-map type inspect http match-any layer7-classmap match request arg regex example ! ! policy-map type inspect http layer7-policymap class type inspect http layer7-classmap reset log policy-map type inspect layer4-policymap class type inspect layer4-classmap inspect service-policy http layer7-policymap class class-default drop ! zone security inside description ** Inside Network ** zone security outside description ** Outside Network ** zone-pair security in2out source inside destination outside description ** Zone Pair - inside to outside ** service-policy type inspect layer4-policymap ! interface GigabitEthernet0/0 ip address 192.168.0.6 255.255.255.0 zone-member security inside ! interface GigabitEthernet0/1 ip address 192.168.1.1 255.255.255.0 zone-member security outside !
To determine the Cisco IOS Software release that is running on a Cisco product, administrators can log in to the device and issue the "show version" command to display the system banner. The system banner confirms that the device is running Cisco IOS Software by displaying text similar to "Cisco Internetwork Operating System Software" or "Cisco IOS Software." The image name displays in parentheses, followed by "Version" and the Cisco IOS Software release name. Other Cisco devices do not have the "show version" command or may provide different output.
The following example identifies a Cisco product that is running Cisco IOS Software Release 15.0(1)M1 with an installed image name of C3900-UNIVERSALK9-M:
Router> show version
Cisco IOS Software, C3900 Software (C3900-UNIVERSALK9-M), Version 15.0(1)M1, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2009 by Cisco Systems, Inc.
Compiled Wed 02-Dec-09 17:17 by prod_rel_team
!--- output truncated
Additional information about Cisco IOS Software release naming conventions is available in the white paper Cisco IOS and NX-OS Software Reference Guide at http://www.cisco.com/web/about/security/intelligence/ios-ref.html.
Products Confirmed Not Vulnerable +--------------------------------
The following products are confirmed not vulnerable:
- Cisco PIX 500 Series Firewall
- Cisco ASA 5500 Series Adaptive Security Appliance
- Firewall Services Module (FWSM) for Catalyst 6500 Series Switches and 7600 Series Routers
- Virtual Firewall (VFW) application on the multiservice blade (MSB) on the Cisco XR 12000 Series Router
- Cisco ACE Application Control Engine Module
- Cisco IOS devices configured with legacy Cisco IOS Firewall Support
- Cisco IOS XR Software
- Cisco IOS XE Software
- Cisco IPS Appliances
- Cisco Catalyst 6500 Series ASA Services Module
- Content Based Access Control (CBAC)
No other Cisco products are currently known to be affected by these vulnerabilities.
Details
Firewalls are networking devices that control access to the network assets of an organization. Firewalls are often positioned at the entrance points of networks. Cisco IOS Software provides a set of security features that allow the configuration of a simple or elaborate firewall policy according to particular requirements.
Cisco IOS IPS is an inline, deep-packet inspection feature that effectively mitigates a wide range of network attacks.
Logs may indicate a message similar to " *CCE: CCE 7 tuple table
entry to add not malloced." or "CCE: CCE 7 tuple table adding
data to invalid hash entry." when the device experiences this
memory leak.
The output of show processes memory sorted will show an
increasing amount of memory being held in the "Chunk Manager"
process in the "Holding" column. The following example shows the
output of the "show processes memory sorted" CLI command:
Router#show processes memory sorted
Processor Pool Total: 930768768 Used: 90497932 Free: 840270836
I/O Pool Total: 12582912 Used: 6138704 Free: 6444208
PID TTY Allocated Freed Holding Getbufs Retbufs Process
1 0 130499156 72333476 58304964 0 0 Chunk Manager
For this particular vulnerability applying Zone-Based Policy
Firewall denial of service protection does not protect against
the memory leak due to Cisco bug ID CSCtq28732.
This vulnerability is documented in Cisco bug ID CSCti79848 and
has been assigned Common Vulnerabilities and Exposures (CVE) ID
CVE-2011-3273.
-
Cisco IOS Software Denial of Service when processing specially crafted HTTP packets
Devices with affected configurations may hang or crash when processing a specially crafted HTTP packets.
If the device supports and is configured with scheduler isr-watchdog then the device will reset and reload if the vulnerability is exploited, rather than just hang. For more information on the "scheduler isr-watchdog" command consult the Cisco IOS Configuration Fundamentals Command Reference at the following link:
http://www.cisco.com/en/US/docs/ios/fundamentals/command/reference/cf_r1.html#wp1079401
This vulnerability is documented in Cisco bug ID CSCto68554 and has been assigned CVE ID CVE-2011-3281.
Vulnerability Scoring Details
Cisco has provided scores for the vulnerabilities in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this Security Advisory is done in accordance with CVSS version 2.0.
CVSS is a standards-based scoring method that conveys vulnerability severity and helps determine urgency and priority of response.
Cisco has provided a base and temporal score. Customers can then compute environmental scores to assist in determining the impact of the vulnerability in individual networks.
Cisco has provided an FAQ to answer additional questions regarding CVSS at:
http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html
Cisco has also provided a CVSS calculator to help compute the environmental impact for individual networks at:
http://intellishield.cisco.com/security/alertmanager/cvss
- CSCti79848 ("Memory leak in Cisco IOS Software when device is configured with either Cisco IOS IPS or ZBFW")
CVSS Base Score - 7.8 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - None Integrity Impact - None Availability Impact - Complete
CVSS Temporal Score - 6.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed
- CSCto68554 ("Cisco IOS Software Denial of Service when processing specially crafted HTTP packets")
CVSS Base Score - 7.8 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - None Integrity Impact - None Availability Impact - Complete
CVSS Temporal Score - 6.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed
Impact
Successful exploitation of these vulnerabilities may result in:
-
Memory leak in Cisco IOS Software
The device may run out of memory resulting in instability or the device crashing.
-
Cisco IOS Software Denial of Service when processing specially crafted HTTP packets
The device may crash or hang. If the device hangs, it will have to be power cycled to recover. If the device supports and is configured with scheduler isr-watchdog then the device will reset and reload if the vulnerability is exploited.
For more information on the "scheduler isr-watchdog" command consult the Cisco IOS Configuration Fundamentals Command Reference at the following link:
http://www.cisco.com/en/US/docs/ios/fundamentals/command/reference/cf_r1.html#wp1079401
Software Versions and Fixes
When considering software upgrades, also consult http://www.cisco.com/go/psirt and any subsequent advisories to determine exposure and a complete upgrade solution.
In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center (TAC) or your contracted maintenance provider for assistance.
Additionally, the Cisco IOS Software Checker is available on the Cisco Security Intelligence Operations (SIO) portal at http://tools.cisco.com/security/center/selectIOSVersion.x. It provides several features for checking which Security Advisories affect specified versions of Cisco IOS Software.
Cisco IOS Software +-----------------
Each row of the following Cisco IOS Software table corresponds to a Cisco IOS Software train. If a particular train is vulnerable, the earliest releases that contain the fix are listed in the First Fixed Release For This Advisory column. The First Fixed Release for All Advisories in the September 2011 Bundled Publication column lists the earliest possible releases that correct all the published vulnerabilities in the Cisco IOS Software Security Advisory bundled publication. Cisco recommends upgrading to the latest available release, where possible.
+------------------------------------------------------------+ | Major | Availability of Repaired Releases | | Release | | |------------+-----------------------------------------------| | Affected | First Fixed | First Fixed Release for All | | 12.0-Based | Release for | Advisories in the September | | Releases | This | 2011 Bundled Publication | | | Advisory | | |------------------------------------------------------------| | There are no affected 12.0 based releases | |------------------------------------------------------------| | Affected | First Fixed | First Fixed Release for All | | 12.1-Based | Release for | Advisories in the September | | Releases | This | 2011 Bundled Publication | | | Advisory | | |------------+--------------+--------------------------------| | 12.1E | Not | 12.2(18)SXF17b | | | Vulnerable | | |------------+--------------+--------------------------------| | Affected | First Fixed | First Fixed Release for All | | 12.2-Based | Release for | Advisories in the September | | Releases | This | 2011 Bundled Publication | | | Advisory | | |------------+--------------+--------------------------------| | 12.2 | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.4 | |------------+--------------+--------------------------------| | 12.2B | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.4 | |------------+--------------+--------------------------------| | 12.2BC | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.4 | |------------+--------------+--------------------------------| | 12.2BW | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2BX | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SB | |------------+--------------+--------------------------------| | 12.2BY | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2BZ | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2CX | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.4 | |------------+--------------+--------------------------------| | 12.2CY | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2CZ | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SB | |------------+--------------+--------------------------------| | 12.2DA | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2DD | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2DX | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2EU | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | | Not | Releases up to and including | | 12.2EW | vulnerable | 12.2(20)EW4 are not | | | | vulnerable. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2EWA | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | 12.2EX | Not | 12.2(55)EX3 | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2EY | Not | 12.2(58)EY | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2EZ | Not | Vulnerable; migrate to any | | | vulnerable | release in 15.0SE | |------------+--------------+--------------------------------| | 12.2FX | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SE | |------------+--------------+--------------------------------| | 12.2FY | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2EX | |------------+--------------+--------------------------------| | 12.2FZ | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SE | |------------+--------------+--------------------------------| | 12.2IRA | Not | Vulnerable; migrate to any | | | vulnerable | release in 12.2IRG | |------------+--------------+--------------------------------| | 12.2IRB | Not | Vulnerable; migrate to any | | | vulnerable | release in 12.2IRG | |------------+--------------+--------------------------------| | 12.2IRC | Not | Vulnerable; migrate to any | | | vulnerable | release in 12.2IRG | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2IRD | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2IRE | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | 12.2IRF | Not | Vulnerable; migrate to any | | | vulnerable | release in 12.2IRG | |------------+--------------+--------------------------------| | 12.2IRG | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2IXA | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2IXB | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2IXC | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2IXD | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2IXE | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2IXF | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2IXG | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2IXH | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | 12.2JA | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2JK | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2MB | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2MC | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.4 | |------------+--------------+--------------------------------| | 12.2MRA | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SRD | |------------+--------------+--------------------------------| | 12.2MRB | Not | 12.2(33)MRB5 | | | vulnerable | | |------------+--------------+--------------------------------| | | | Releases prior to 12.2(30)S | | | Not | are vulnerable; Releases 12.2 | | 12.2S | vulnerable | (30)S and later are not | | | | vulnerable. First fixed in | | | | Release 12.2SB | |------------+--------------+--------------------------------| | | Not | 12.2(31)SB20 | | 12.2SB | vulnerable | | | | | 12.2(33)SB10 | |------------+--------------+--------------------------------| | 12.2SBC | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SB | |------------+--------------+--------------------------------| | 12.2SCA | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SCC | |------------+--------------+--------------------------------| | 12.2SCB | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SCC | |------------+--------------+--------------------------------| | 12.2SCC | Not | 12.2(33)SCC7 | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2SCD | Not | 12.2(33)SCD6 | | | vulnerable | | |------------+--------------+--------------------------------| | | Not | 12.2(33)SCE1 | | 12.2SCE | vulnerable | | | | | 12.2(33)SCE2 | |------------+--------------+--------------------------------| | 12.2SCF | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | | Not | 12.2(55)SE3 | | 12.2SE | vulnerable | | | | | 12.2(58)SE | |------------+--------------+--------------------------------| | 12.2SEA | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SE | |------------+--------------+--------------------------------| | 12.2SEB | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SE | |------------+--------------+--------------------------------| | 12.2SEC | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SE | |------------+--------------+--------------------------------| | 12.2SED | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SE | |------------+--------------+--------------------------------| | 12.2SEE | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SE | |------------+--------------+--------------------------------| | 12.2SEF | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SE | |------------+--------------+--------------------------------| | | | Releases prior to 12.2(25)SEG4 | | | Not | are vulnerable; Releases 12.2 | | 12.2SEG | vulnerable | (25)SEG4 and later are not | | | | vulnerable. First fixed in | | | | Release 12.2EX | |------------+--------------+--------------------------------| | | | Releases prior to 12.2(53)SG4 | | 12.2SG | Not | are vulnerable; Releases 12.2 | | | vulnerable | (53)SG4 and later are not | | | | vulnerable. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2SGA | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | 12.2SL | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2SM | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | 12.2SO | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2SQ | Not | 12.2(50)SQ3 | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2SRA | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SRD | |------------+--------------+--------------------------------| | 12.2SRB | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SRD | |------------+--------------+--------------------------------| | 12.2SRC | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SRD | |------------+--------------+--------------------------------| | 12.2SRD | Not | 12.2(33)SRD6 | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2SRE | Not | 12.2(33)SRE4 | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2STE | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2SU | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.4 | |------------+--------------+--------------------------------| | | | Releases prior to 12.2(29a)SV | | | Not | are vulnerable; Releases 12.2 | | 12.2SV | vulnerable | (29a)SV and later are not | | | | vulnerable. Migrate to any | | | | release in 12.2SVD | |------------+--------------+--------------------------------| | 12.2SVA | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2SVC | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2SVD | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2SVE | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2SW | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | 12.2SX | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SXF | |------------+--------------+--------------------------------| | 12.2SXA | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SXF | |------------+--------------+--------------------------------| | 12.2SXB | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SXF | |------------+--------------+--------------------------------| | 12.2SXD | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SXF | |------------+--------------+--------------------------------| | 12.2SXE | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SXF | |------------+--------------+--------------------------------| | 12.2SXF | Not | 12.2(18)SXF17b | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2SXH | Not | 12.2(33)SXH8a | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2SXI | Not | 12.2(33)SXI6 | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2SXJ | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2SY | Not | 12.2(50)SY | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2SZ | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SB | |------------+--------------+--------------------------------| | 12.2T | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.4 | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2TPC | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | 12.2XA | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2XB | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.4 | |------------+--------------+--------------------------------| | 12.2XC | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2XD | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2XE | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2XF | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2XG | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2XH | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2XI | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2XJ | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2XK | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2XL | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2XM | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2XN | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | | See Cisco | | | 12.2XNA | IOS-XE | See Cisco IOS-XE Software | | | Software | Availability | | | Availability | | |------------+--------------+--------------------------------| | | See Cisco | | | 12.2XNB | IOS-XE | See Cisco IOS-XE Software | | | Software | Availability | | | Availability | | |------------+--------------+--------------------------------| | | See Cisco | | | 12.2XNC | IOS-XE | See Cisco IOS-XE Software | | | Software | Availability | | | Availability | | |------------+--------------+--------------------------------| | | See Cisco | | | 12.2XND | IOS-XE | See Cisco IOS-XE Software | | | Software | Availability | | | Availability | | |------------+--------------+--------------------------------| | | See Cisco | | | 12.2XNE | IOS-XE | See Cisco IOS-XE Software | | | Software | Availability | | | Availability | | |------------+--------------+--------------------------------| | | See Cisco | | | 12.2XNF | IOS-XE | See Cisco IOS-XE Software | | | Software | Availability | | | Availability | | |------------+--------------+--------------------------------| | | | Releases prior to 12.2(54)XO | | 12.2XO | Not | are vulnerable; Releases 12.2 | | | vulnerable | (54)XO and later are not | | | | vulnerable. | |------------+--------------+--------------------------------| | 12.2XQ | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2XR | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2XS | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2XT | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2XU | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2XV | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2XW | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2YA | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.4 | |------------+--------------+--------------------------------| | 12.2YB | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2YC | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2YD | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2YE | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2YF | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2YG | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2YH | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2YJ | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | 12.2YK | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2YL | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | 12.2YM | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.4 | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2YN | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | 12.2YO | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2YP | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2YQ | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2YR | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2YS | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2YT | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2YU | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2YV | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2YW | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2YX | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2YY | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2YZ | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | 12.2ZA | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SXF | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2ZB | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | 12.2ZC | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2ZD | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2ZE | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.4 | |------------+--------------+--------------------------------| | 12.2ZF | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.4 | |------------+--------------+--------------------------------| | 12.2ZG | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2ZH | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.4 | |------------+--------------+--------------------------------| | 12.2ZJ | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2ZL | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | 12.2ZP | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | 12.2ZU | Not | Vulnerable; first fixed in | | | vulnerable | Release 12.2SXH | |------------+--------------+--------------------------------| | 12.2ZX | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2ZY | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 12.2ZYA | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | Affected | First Fixed | First Fixed Release for All | | 12.3-Based | Release for | Advisories in the September | | Releases | This | 2011 Bundled Publication | | | Advisory | | |------------------------------------------------------------| | There are no affected 12.3 based releases | |------------------------------------------------------------| | Affected | First Fixed | First Fixed Release for All | | 12.4-Based | Release for | Advisories in the September | | Releases | This | 2011 Bundled Publication | | | Advisory | | |------------------------------------------------------------| | There are no affected 12.4 based releases | |------------------------------------------------------------| | Affected | First Fixed | First Fixed Release for All | | 15.0-Based | Release for | Advisories in the September | | Releases | This | 2011 Bundled Publication | | | Advisory | | |------------+--------------+--------------------------------| | 15.0M | 15.0(1)M7 | 15.0(1)M7 | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 15.0MR | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 15.0MRA | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | See Cisco | | | 15.0S | IOS-XE | See Cisco IOS-XE Software | | | Software | Availability | | | Availability | | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 15.0SA | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | 15.0SE | Not | Not vulnerable | | | vulnerable | | |------------+--------------+--------------------------------| | | See Cisco | | | 15.0SG | IOS-XE | See Cisco IOS-XE Software | | | Software | Availability | | | Availability | | |------------+--------------+--------------------------------| | | Vulnerable; | | | 15.0XA | first fixed | Vulnerable; first fixed in | | | in Release | Release 15.1T | | | 15.1T | | |------------+--------------+--------------------------------| | | See Cisco | | | 15.0XO | IOS-XE | See Cisco IOS-XE Software | | | Software | Availability | | | Availability | | |------------+--------------+--------------------------------| | Affected | First Fixed | First Fixed Release for All | | 15.1-Based | Release for | Advisories in the September | | Releases | This | 2011 Bundled Publication | | | Advisory | | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 15.1EY | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | Vulnerable; | | | 15.1GC | first fixed | Vulnerable; first fixed in | | | in Release | Release 15.1T | | | 15.1T | | |------------+--------------+--------------------------------| | 15.1M | 15.1(4)M1 | 15.1(4)M2; Available on | | | | 30-SEP-11 | |------------+--------------+--------------------------------| | | | Vulnerable; contact your | | | Not | support organization per the | | 15.1MR | vulnerable | instructions in the Obtaining | | | | Fixed Software section of this | | | | advisory. | |------------+--------------+--------------------------------| | | See Cisco | | | 15.1S | IOS-XE | See Cisco IOS-XE Software | | | Software | Availability | | | Availability | | |------------+--------------+--------------------------------| | | 15.1(1)T4; | | | | Available on | | | | 08-Dec-2011 | 15.1(2)T4 | | 15.1T | | | | | 15.1(2)T4 | 15.1(1)T4 on 8-Dec-2011 | | | | | | | 15.1(3)T2 | | |------------+--------------+--------------------------------| | | Vulnerable; | | | 15.1XB | first fixed | Vulnerable; first fixed in | | | in Release | Release 15.1T | | | 15.1T | | |------------+--------------+--------------------------------| | Affected | First Fixed | First Fixed Release for All | | 15.2-Based | Release for | Advisories in the September | | Releases | This | 2011 Bundled Publication | | | Advisory | | |------------------------------------------------------------| | There are no affected 15.2 based releases | +------------------------------------------------------------+
Cisco IOS XE Software +--------------------
Cisco IOS XE Software is not affected by the vulnerabilities disclosed in this document.
+------------------------------------------------------------+ | Cisco | First Fixed | First Fixed Release for All | | IOS XE | Release For | Advisories in the September | | Release | This Advisory | 2011 Bundled Publication | |----------+----------------+--------------------------------| | 2.1.x | Not vulnerable | Vulnerable; migrate to 3.3.2S | | | | or later | |----------+----------------+--------------------------------| | 2.2.x | Not vulnerable | Vulnerable; migrate to 3.3.2S | | | | or later | |----------+----------------+--------------------------------| | 2.3.x | Not vulnerable | Vulnerable; migrate to 3.3.2S | | | | or later | |----------+----------------+--------------------------------| | 2.4.x | Not vulnerable | Vulnerable; migrate to 3.3.2S | | | | or later | |----------+----------------+--------------------------------| | 2.5.x | Not vulnerable | Vulnerable; migrate to 3.3.2S | | | | or later | |----------+----------------+--------------------------------| | 2.6.x | Not vulnerable | Vulnerable; migrate to 3.3.2S | | | | or later | |----------+----------------+--------------------------------| | 3.1.xS | Not vulnerable | Vulnerable; migrate to 3.3.2S | | | | or later | |----------+----------------+--------------------------------| | 3.1.xSG | Not vulnerable | Vulnerable; migrate to 3.2.0SG | | | | or later | |----------+----------------+--------------------------------| | 3.2.xS | Not vulnerable | Vulnerable; migrate to 3.3.2S | | | | or later | |----------+----------------+--------------------------------| | 3.2.xSG | Not vulnerable | Not vulnerable | |----------+----------------+--------------------------------| | 3.3.xS | Not vulnerable | 3.3.2S | |----------+----------------+--------------------------------| | 3.4.xS | Not vulnerable | Not vulnerable | +------------------------------------------------------------+
For mapping of Cisco IOS XE to Cisco IOS releases, please refer to the Cisco IOS XE 2 Release Notes, Cisco IOS XE 3S Release Notes, and Cisco IOS XE 3SG Release Notes.
Cisco IOS XR Software +--------------------
Cisco IOS XR Software is not affected by the vulnerabilities disclosed in this document.
Cisco IOS XR Software is not affected by any of the vulnerabilities in the September 2011 bundled publication.
Workarounds
Workarounds that mitigate these vulnerabilities are not available.
Obtaining Fixed Software
Cisco has released free software updates that address these vulnerabilities. Prior to deploying software, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment.
Customers may only install and expect support for the feature sets they have purchased. By installing, downloading, accessing or otherwise using such software upgrades, customers agree to be bound by the terms of Cisco's software license terms found at http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html, or as otherwise set forth at Cisco.com Downloads at http://www.cisco.com/public/sw-center/sw-usingswc.shtml.
Do not contact psirt@cisco.com or security-alert@cisco.com for software upgrades.
Customers with Service Contracts +-------------------------------
Customers with contracts should obtain upgraded software through their regular update channels. For most customers, this means that upgrades should be obtained through the Software Center on Cisco's worldwide website at http://www.cisco.com.
Customers using Third Party Support Organizations +------------------------------------------------
Customers whose Cisco products are provided or maintained through prior or existing agreements with third-party support organizations, such as Cisco Partners, authorized resellers, or service providers should contact that support organization for guidance and assistance with the appropriate course of action in regards to this advisory.
The effectiveness of any workaround or fix is dependent on specific customer situations, such as product mix, network topology, traffic behavior, and organizational mission. Due to the variety of affected products and releases, customers should consult with their service provider or support organization to ensure any applied workaround or fix is the most appropriate for use in the intended network before it is deployed.
Customers without Service Contracts +----------------------------------
Customers who purchase direct from Cisco but do not hold a Cisco service contract, and customers who purchase through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should acquire upgrades by contacting the Cisco Technical Assistance Center (TAC). TAC contacts are as follows.
- +1 800 553 2447 (toll free from within North America)
- +1 408 526 7209 (toll call from anywhere in the world)
- e-mail: tac@cisco.com
Customers should have their product serial number available and be prepared to give the URL of this notice as evidence of entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC.
Refer to http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html for additional TAC contact information, including localized telephone numbers, and instructions and e-mail addresses for use in various languages.
Exploitation and Public Announcements
The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities described in this advisory.
These vulnerabilities were discovered while handling customer support calls.
Status of this Notice: FINAL
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A stand-alone copy or Paraphrase of the text of this document that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors.
Distribution
This advisory is posted on Cisco's worldwide website at:
http://www.cisco.com/warp/public/707/cisco-sa-20110928-zbfw.shtml
In addition to worldwide web posting, a text version of this notice is clear-signed with the Cisco PSIRT PGP key and is posted to the following e-mail and Usenet news recipients.
- cust-security-announce@cisco.com
- first-bulletins@lists.first.org
- bugtraq@securityfocus.com
- vulnwatch@vulnwatch.org
- cisco@spot.colorado.edu
- cisco-nsp@puck.nether.net
- full-disclosure@lists.grok.org.uk
- comp.dcom.sys.cisco@newsgate.cisco.com
Future updates of this advisory, if any, will be placed on Cisco's worldwide website, but may or may not be actively announced on mailing lists or newsgroups. Users concerned about this problem are encouraged to check the above URL for any updates.
Revision History
+------------------------------------------------------------+ | Revision 1.0 | 2011-September-28 | Initial public release. | +------------------------------------------------------------+
Cisco Security Procedures
Complete information on reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco, is available on Cisco's worldwide website at http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html. This includes instructions for press inquiries regarding Cisco security notices. All Cisco security advisories are available at http://www.cisco.com/go/psirt.
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The new Secunia Corporate Software Inspector (CSI) 5.0 Integrates with Microsoft WSUS & SCCM and supports Apple Mac OS X.
Get a free trial now and qualify for a special discount: http://secunia.com/vulnerability_scanning/corporate/trial/
TITLE: Cisco IOS IPS and Zone-Based Firewall Two Denial of Service Vulnerabilities
SECUNIA ADVISORY ID: SA46198
VERIFY ADVISORY: Secunia.com http://secunia.com/advisories/46198/ Customer Area (Credentials Required) https://ca.secunia.com/?page=viewadvisory&vuln_id=46198
RELEASE DATE: 2011-09-30
DISCUSS ADVISORY: http://secunia.com/advisories/46198/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA: * Last Update * Popularity * Comments * Criticality Level * Impact * Where * Solution Status * Operating System / Software * CVE Reference(s)
http://secunia.com/advisories/46198/
ONLY AVAILABLE IN CUSTOMER AREA: * Authentication Level * Report Reliability * Secunia PoC * Secunia Analysis * Systems Affected * Approve Distribution * Remediation Status * Secunia CVSS Score * CVSS
https://ca.secunia.com/?page=viewadvisory&vuln_id=46198
ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI: * AUTOMATED SCANNING
http://secunia.com/vulnerability_scanning/personal/ http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/
DESCRIPTION: Two vulnerabilities have been reported in Cisco IOS, which can be exploited by malicious people to cause a DoS (Denial of Service).
Please see the vendor's advisory for a list of affected versions.
SOLUTION: Update to a fixed version (please see the vendor's advisory for details).
PROVIDED AND/OR DISCOVERED BY: Reported by the vendor.
ORIGINAL ADVISORY: http://www.cisco.com/warp/public/707/cisco-sa-20110928-zbfw.shtml
OTHER REFERENCES: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/
DEEP LINKS: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/
EXTENDED DESCRIPTION: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/
EXTENDED SOLUTION: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/
EXPLOIT: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/
About: This Advisory was delivered by Secunia as a free service to help private users keeping their systems up to date against the latest vulnerabilities.
Subscribe: http://secunia.com/advisories/secunia_security_advisories/
Definitions: (Criticality, Where etc.) http://secunia.com/advisories/about_secunia_advisories/
Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor
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"data": "Memory leak in Cisco IOS 15.0 through 15.1, when IPS or Zone-Based Firewall (aka ZBFW) is configured, allows remote attackers to cause a denial of service (memory consumption or device crash) via vectors that trigger many session creation flows, aka Bug ID CSCti79848. The problem is Bug ID CSCti79848 It is a problem.Service disruption by inducing the creation of a large number of sessions by a third party ( Memory consumption or device crash ) There is a possibility of being put into a state. Cisco IOS is prone to multiple remote denial-of-service vulnerabilities. \nAn attacker can exploit these issues to cause an affected device to reload, denying service to legitimate users. \nThese issues are being tracked by Cisco Bug IDs CSCti79848 and CSCto68554. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA256\n\nCisco Security Advisory: Cisco IOS Software IPS and Zone-Based\nFirewall Vulnerabilities\n\nAdvisory ID: cisco-sa-20110928-zbfw\n\nRevision 1.0\n\nFor Public Release 2011 September 28 1600 UTC (GMT)\n\n+--------------------------------------------------------------------\n\nSummary\n=======\n\nCisco IOS Software contains two vulnerabilities related to Cisco IOS\nIntrusion Prevention System (IPS) and Cisco IOS Zone-Based Firewall\nfeatures. These vulnerabilities are:\n\n * Memory leak in Cisco IOS Software\n * Cisco IOS Software Denial of Service when processing specially\n crafted HTTP packets\n\nCisco has released free software updates that address these\nvulnerabilities. \n\nWorkarounds that mitigate these vulnerabilities are not available. \n\nThis advisory is posted at\nhttp://www.cisco.com/warp/public/707/cisco-sa-20110928-zbfw.shtml. \n\nNote: The September 28, 2011, Cisco IOS Software Security Advisory\nbundled publication includes ten Cisco Security Advisories. Each advisory lists the Cisco IOS Software releases that\ncorrect the vulnerability or vulnerabilities detailed in the advisory as\nwell as the Cisco IOS Software releases that correct all vulnerabilities\nin the September 2011 Bundled Publication. The two vulnerabilities are independent of each\nother. Details to confirm affected configurations are provided below. \n To determine if a device is configured with Cisco IOS IPS, log\n into the device and issue the \"show ip ips interfaces\" CLI command. \n If the output shows an IPS rule either in the inbound or outbound\n direction set, then the device is vulnerable. This example, shows\n a device with an IPS rule set on Interface Gigabit Ethernet 0/0\n in the inbound direction:\n\n Router#show ip ips interfaces\n Interface Configuration\n Interface GigabitEthernet0/0\n Inbound IPS rule is example_ips_rule\n Outgoing IPS rule is not set\n Router#\n\n A device that is not configured for Cisco IOS IPS will return a\n blank line. The following example shows a device on which Cisco\n IOS IPS is not configured:\n\n Router#show ip ips interfaces\n\n Router#\n\n To determine whether a device is configured with Zone-Based\n Firewall, log into the device and issue the \"show zone security\"\n CLI command. If the output shows a member interface under a zone\n name, then the device is vulnerable. This example, shows a device\n with Zone-Based Firewall rules configured on both\n GigabitEthernet0/0 and GigabitEthernet0/1\n\n Router#show zone security\n zone self\n Description: System defined zone\n\n\n zone inside\n Description: *** Inside Network ***\n Member Interfaces:\n GigabitEthernet0/0\n\n\n zone outside\n Description: *** Outside Network ***\n Member Interfaces:\n GigabitEthernet0/1\n\n\n Router#\n\n Note: The device is vulnerable if configured with Zone-Based\n Firewall, regardless of the type of packet inspection being\n performed. \n\n * Cisco IOS Software Denial of Service when processing specially\n crafted HTTP packets\n\n A device is vulnerable if configured under the following\n circumstances:\n\n - HTTP Layer 7 Application Control and Inspection and Cisco IOS\n IPS are enabled. \n - HTTP Layer 7 Application Control and Inspection with match\n request arg regex parameter on the HTTP class map. This\n configuration is affected regardless if Cisco IOS IPS is enabled\n or not. \n\n The device is not vulnerable under other configurations. A\n summary of different configurations and their affect by this\n vulnerability is provided below:\n\n +--------------------------------------------------------+\n | | Affected |\n | Configuration on Device | or not |\n | | Affected |\n |--------------------------------------------+-----------|\n | Only Cisco IOS IPS enabled | Not |\n | | Affected |\n |--------------------------------------------+-----------|\n | HTTP Layer 4 Stateful Inspection with | Not |\n | Cisco IOS IPS enabled | Affected |\n |--------------------------------------------+-----------|\n | HTTP Layer 4 Stateful Inspection with | Not |\n | Cisco IOS IPS disabled | Affected |\n |--------------------------------------------+-----------|\n | HTTP Layer 7 Application Control and | Affected |\n | Inspection with Cisco IOS IPS enabled | |\n |--------------------------------------------+-----------|\n | HTTP Layer 7 Application Control and | |\n | Inspection with match arg regex parameter. | Affected |\n | With or without Cisco IOS IPS enabled. | |\n |--------------------------------------------+-----------|\n | HTTP Layer 7 Application Control and | |\n | Inspection without match arg regex | Not |\n | parameter. With or without Cisco IOS IPS | Affected |\n | enabled. | |\n +--------------------------------------------------------+\n\n The following example shows an affected device configured with\n HTTP Layer 7 Application Control and Inspection and Cisco IOS IPS\n enabled:\n\n !\n ip ips name myips\n !\n ip ips signature-category\n category all\n retired true\n category ios_ips basic\n retired false\n !\n !\n class-map type inspect match-any layer4-classmap\n match protocol http\n !\n class-map type inspect http match-any layer7-classmap\n match request arg length gt 15\n !\n !\n policy-map type inspect http layer7-policymap\n class type inspect http layer7-classmap\n reset\n log\n policy-map type inspect layer4-policymap\n class type inspect layer4-classmap\n inspect\n service-policy http layer7-policymap\n class class-default\n drop\n !\n zone security inside\n description ** Inside Network **\n zone security outside\n description ** Outside Network **\n zone-pair security in2out source inside destination outside\n description ** Zone Pair - inside to outside **\n service-policy type inspect layer4-policymap\n !\n !\n interface GigabitEthernet0/0\n ip address 192.168.0.6 255.255.255.0\n ip ips myips in\n zone-member security inside\n !\n interface GigabitEthernet0/1\n ip address 192.168.1.1 255.255.255.0\n zone-member security outside\n !\n\n The following example shows an affected device configured with\n HTTP Layer 7 Application Control and Inspection with the match\n request arg regex parameter on the HTTP class map:\n\n !\n parameter-map type regex example\n pattern [^\\x00-\\x80]\n !\n class-map type inspect match-any layer4-classmap\n match protocol http\n !\n class-map type inspect http match-any layer7-classmap\n match request arg regex example\n !\n !\n policy-map type inspect http layer7-policymap\n class type inspect http layer7-classmap\n reset\n log\n policy-map type inspect layer4-policymap\n class type inspect layer4-classmap\n inspect\n service-policy http layer7-policymap\n class class-default\n drop\n !\n zone security inside\n description ** Inside Network **\n zone security outside\n description ** Outside Network **\n zone-pair security in2out source inside destination outside\n description ** Zone Pair - inside to outside **\n service-policy type inspect layer4-policymap\n !\n interface GigabitEthernet0/0\n ip address 192.168.0.6 255.255.255.0\n zone-member security inside\n !\n interface GigabitEthernet0/1\n ip address 192.168.1.1 255.255.255.0\n zone-member security outside\n !\n\nTo determine the Cisco IOS Software release that is running on a\nCisco product, administrators can log in to the device and issue the\n\"show version\" command to display the system banner. The system banner\nconfirms that the device is running Cisco IOS Software by displaying\ntext similar to \"Cisco Internetwork Operating System Software\" or\n\"Cisco IOS Software.\" The image name displays in parentheses,\nfollowed by \"Version\" and the Cisco IOS Software release name. Other\nCisco devices do not have the \"show version\" command or may provide\ndifferent output. \n\nThe following example identifies a Cisco product that is running\nCisco IOS Software Release 15.0(1)M1 with an installed image name of\nC3900-UNIVERSALK9-M:\n\n Router\u003e show version\n Cisco IOS Software, C3900 Software (C3900-UNIVERSALK9-M), Version 15.0(1)M1, RELEASE SOFTWARE (fc1)\n Technical Support: http://www.cisco.com/techsupport\n Copyright (c) 1986-2009 by Cisco Systems, Inc. \n Compiled Wed 02-Dec-09 17:17 by prod_rel_team\n\n !--- output truncated\n\nAdditional information about Cisco IOS Software\nrelease naming conventions is available in the white\npaper Cisco IOS and NX-OS Software Reference Guide at\nhttp://www.cisco.com/web/about/security/intelligence/ios-ref.html. \n\nProducts Confirmed Not Vulnerable\n+--------------------------------\n\nThe following products are confirmed not vulnerable:\n\n * Cisco PIX 500 Series Firewall\n * Cisco ASA 5500 Series Adaptive Security Appliance\n * Firewall Services Module (FWSM) for Catalyst 6500 Series Switches\n and 7600 Series Routers\n * Virtual Firewall (VFW) application on the multiservice blade\n (MSB) on the Cisco XR 12000 Series Router\n * Cisco ACE Application Control Engine Module\n * Cisco IOS devices configured with legacy Cisco IOS Firewall\n Support\n * Cisco IOS XR Software\n * Cisco IOS XE Software\n * Cisco IPS Appliances\n * Cisco Catalyst 6500 Series ASA Services Module\n * Content Based Access Control (CBAC)\n\nNo other Cisco products are currently known to be affected by these\nvulnerabilities. \n\nDetails\n=======\n\nFirewalls are networking devices that control access to the network\nassets of an organization. Firewalls are often positioned at the\nentrance points of networks. Cisco IOS Software provides a set of\nsecurity features that allow the configuration of a simple or\nelaborate firewall policy according to particular requirements. \n\nCisco IOS IPS is an inline, deep-packet inspection feature that\neffectively mitigates a wide range of network attacks. \n\n Logs may indicate a message similar to \" *CCE: CCE 7 tuple table\n entry to add not malloced.\" or \"CCE: CCE 7 tuple table adding\n data to invalid hash entry.\" when the device experiences this\n memory leak. \n\n The output of show processes memory sorted will show an\n increasing amount of memory being held in the \"Chunk Manager\"\n process in the \"Holding\" column. The following example shows the\n output of the \"show processes memory sorted\" CLI command:\n\n Router#show processes memory sorted\n Processor Pool Total: 930768768 Used: 90497932 Free: 840270836\n I/O Pool Total: 12582912 Used: 6138704 Free: 6444208\n\n PID TTY Allocated Freed Holding Getbufs Retbufs Process\n 1 0 130499156 72333476 58304964 0 0 Chunk Manager\n\n For this particular vulnerability applying Zone-Based Policy\n Firewall denial of service protection does not protect against\n the memory leak due to Cisco bug ID CSCtq28732. \n\n This vulnerability is documented in Cisco bug ID CSCti79848 and\n has been assigned Common Vulnerabilities and Exposures (CVE) ID\n CVE-2011-3273. \n\n * Cisco IOS Software Denial of Service when processing specially\n crafted HTTP packets\n\n Devices with affected configurations may hang or crash when\n processing a specially crafted HTTP packets. \n\n If the device supports and is configured with scheduler\n isr-watchdog then the device will reset and reload if the\n vulnerability is exploited, rather than just hang. For more\n information on the \"scheduler isr-watchdog\" command consult the\n Cisco IOS Configuration Fundamentals Command Reference at the\n following link:\n \n http://www.cisco.com/en/US/docs/ios/fundamentals/command/reference/cf_r1.html#wp1079401\n\n This vulnerability is documented in Cisco bug ID CSCto68554 and has\n been assigned CVE ID CVE-2011-3281. \n\nVulnerability Scoring Details\n=============================\n\nCisco has provided scores for the vulnerabilities in this advisory\nbased on the Common Vulnerability Scoring System (CVSS). The CVSS\nscoring in this Security Advisory is done in accordance with CVSS\nversion 2.0. \n\nCVSS is a standards-based scoring method that conveys vulnerability\nseverity and helps determine urgency and priority of response. \n\nCisco has provided a base and temporal score. Customers can then\ncompute environmental scores to assist in determining the impact of\nthe vulnerability in individual networks. \n\nCisco has provided an FAQ to answer additional questions regarding\nCVSS at:\n\nhttp://www.cisco.com/web/about/security/intelligence/cvss-qandas.html\n\nCisco has also provided a CVSS calculator to help compute the\nenvironmental impact for individual networks at:\n\nhttp://intellishield.cisco.com/security/alertmanager/cvss\n\n\n* CSCti79848 (\"Memory leak in Cisco IOS Software when device is\nconfigured with either Cisco IOS IPS or ZBFW\")\n\nCVSS Base Score - 7.8\n Access Vector - Network\n Access Complexity - Low\n Authentication - None\n Confidentiality Impact - None\n Integrity Impact - None\n Availability Impact - Complete\n\nCVSS Temporal Score - 6.4\n Exploitability - Functional\n Remediation Level - Official-Fix\n Report Confidence - Confirmed\n\n\n* CSCto68554 (\"Cisco IOS Software Denial of Service when processing\nspecially crafted HTTP packets\")\n\nCVSS Base Score - 7.8\n Access Vector - Network\n Access Complexity - Low\n Authentication - None\n Confidentiality Impact - None\n Integrity Impact - None\n Availability Impact - Complete\n\nCVSS Temporal Score - 6.4\n Exploitability - Functional\n Remediation Level - Official-Fix\n Report Confidence - Confirmed\n\n\nImpact\n======\n\nSuccessful exploitation of these vulnerabilities may result in:\n\n * Memory leak in Cisco IOS Software\n\n The device may run out of memory resulting in instability or the\n device crashing. \n\n * Cisco IOS Software Denial of Service when processing specially\n crafted HTTP packets\n\n The device may crash or hang. If the device hangs, it will have\n to be power cycled to recover. If the device supports and is\n configured with scheduler isr-watchdog then the device will reset\n and reload if the vulnerability is exploited. \n\n For more information on the \"scheduler isr-watchdog\" command\n consult the Cisco IOS Configuration Fundamentals Command\n Reference at the following link:\n \n http://www.cisco.com/en/US/docs/ios/fundamentals/command/reference/cf_r1.html#wp1079401\n\nSoftware Versions and Fixes\n===========================\n\nWhen considering software upgrades, also consult\nhttp://www.cisco.com/go/psirt and any subsequent advisories to determine\nexposure and a complete upgrade solution. \n\nIn all cases, customers should exercise caution to be certain the\ndevices to be upgraded contain sufficient memory and that current\nhardware and software configurations will continue to be supported\nproperly by the new release. If the information is not clear, contact\nthe Cisco Technical Assistance Center (TAC) or your contracted\nmaintenance provider for assistance. \n\nAdditionally, the Cisco IOS Software Checker is available on\nthe Cisco Security Intelligence Operations (SIO) portal at\nhttp://tools.cisco.com/security/center/selectIOSVersion.x. It provides\nseveral features for checking which Security Advisories affect specified\nversions of Cisco IOS Software. \n\nCisco IOS Software\n+-----------------\n\nEach row of the following Cisco IOS Software table corresponds to a\nCisco IOS Software train. If a particular train is vulnerable, the\nearliest releases that contain the fix are listed in the First Fixed\nRelease For This Advisory column. The First Fixed Release for All\nAdvisories in the September 2011 Bundled Publication column lists the\nearliest possible releases that correct all the published\nvulnerabilities in the Cisco IOS Software Security Advisory bundled\npublication. Cisco recommends upgrading to the latest available\nrelease, where possible. \n\n+------------------------------------------------------------+\n| Major | Availability of Repaired Releases |\n| Release | |\n|------------+-----------------------------------------------|\n| Affected | First Fixed | First Fixed Release for All |\n| 12.0-Based | Release for | Advisories in the September |\n| Releases | This | 2011 Bundled Publication |\n| | Advisory | |\n|------------------------------------------------------------|\n| There are no affected 12.0 based releases |\n|------------------------------------------------------------|\n| Affected | First Fixed | First Fixed Release for All |\n| 12.1-Based | Release for | Advisories in the September |\n| Releases | This | 2011 Bundled Publication |\n| | Advisory | |\n|------------+--------------+--------------------------------|\n| 12.1E | Not | 12.2(18)SXF17b |\n| | Vulnerable | |\n|------------+--------------+--------------------------------|\n| Affected | First Fixed | First Fixed Release for All |\n| 12.2-Based | Release for | Advisories in the September |\n| Releases | This | 2011 Bundled Publication |\n| | Advisory | |\n|------------+--------------+--------------------------------|\n| 12.2 | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.4 |\n|------------+--------------+--------------------------------|\n| 12.2B | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.4 |\n|------------+--------------+--------------------------------|\n| 12.2BC | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.4 |\n|------------+--------------+--------------------------------|\n| 12.2BW | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2BX | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SB |\n|------------+--------------+--------------------------------|\n| 12.2BY | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2BZ | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2CX | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.4 |\n|------------+--------------+--------------------------------|\n| 12.2CY | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2CZ | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SB |\n|------------+--------------+--------------------------------|\n| 12.2DA | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2DD | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2DX | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2EU | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| | Not | Releases up to and including |\n| 12.2EW | vulnerable | 12.2(20)EW4 are not |\n| | | vulnerable. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2EWA | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| 12.2EX | Not | 12.2(55)EX3 |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2EY | Not | 12.2(58)EY |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2EZ | Not | Vulnerable; migrate to any |\n| | vulnerable | release in 15.0SE |\n|------------+--------------+--------------------------------|\n| 12.2FX | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SE |\n|------------+--------------+--------------------------------|\n| 12.2FY | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2EX |\n|------------+--------------+--------------------------------|\n| 12.2FZ | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SE |\n|------------+--------------+--------------------------------|\n| 12.2IRA | Not | Vulnerable; migrate to any |\n| | vulnerable | release in 12.2IRG |\n|------------+--------------+--------------------------------|\n| 12.2IRB | Not | Vulnerable; migrate to any |\n| | vulnerable | release in 12.2IRG |\n|------------+--------------+--------------------------------|\n| 12.2IRC | Not | Vulnerable; migrate to any |\n| | vulnerable | release in 12.2IRG |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2IRD | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2IRE | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| 12.2IRF | Not | Vulnerable; migrate to any |\n| | vulnerable | release in 12.2IRG |\n|------------+--------------+--------------------------------|\n| 12.2IRG | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2IXA | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2IXB | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2IXC | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2IXD | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2IXE | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2IXF | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2IXG | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2IXH | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| 12.2JA | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2JK | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2MB | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2MC | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.4 |\n|------------+--------------+--------------------------------|\n| 12.2MRA | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SRD |\n|------------+--------------+--------------------------------|\n| 12.2MRB | Not | 12.2(33)MRB5 |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| | | Releases prior to 12.2(30)S |\n| | Not | are vulnerable; Releases 12.2 |\n| 12.2S | vulnerable | (30)S and later are not |\n| | | vulnerable. First fixed in |\n| | | Release 12.2SB |\n|------------+--------------+--------------------------------|\n| | Not | 12.2(31)SB20 |\n| 12.2SB | vulnerable | |\n| | | 12.2(33)SB10 |\n|------------+--------------+--------------------------------|\n| 12.2SBC | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SB |\n|------------+--------------+--------------------------------|\n| 12.2SCA | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SCC |\n|------------+--------------+--------------------------------|\n| 12.2SCB | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SCC |\n|------------+--------------+--------------------------------|\n| 12.2SCC | Not | 12.2(33)SCC7 |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2SCD | Not | 12.2(33)SCD6 |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| | Not | 12.2(33)SCE1 |\n| 12.2SCE | vulnerable | |\n| | | 12.2(33)SCE2 |\n|------------+--------------+--------------------------------|\n| 12.2SCF | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| | Not | 12.2(55)SE3 |\n| 12.2SE | vulnerable | |\n| | | 12.2(58)SE |\n|------------+--------------+--------------------------------|\n| 12.2SEA | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SE |\n|------------+--------------+--------------------------------|\n| 12.2SEB | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SE |\n|------------+--------------+--------------------------------|\n| 12.2SEC | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SE |\n|------------+--------------+--------------------------------|\n| 12.2SED | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SE |\n|------------+--------------+--------------------------------|\n| 12.2SEE | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SE |\n|------------+--------------+--------------------------------|\n| 12.2SEF | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SE |\n|------------+--------------+--------------------------------|\n| | | Releases prior to 12.2(25)SEG4 |\n| | Not | are vulnerable; Releases 12.2 |\n| 12.2SEG | vulnerable | (25)SEG4 and later are not |\n| | | vulnerable. First fixed in |\n| | | Release 12.2EX |\n|------------+--------------+--------------------------------|\n| | | Releases prior to 12.2(53)SG4 |\n| 12.2SG | Not | are vulnerable; Releases 12.2 |\n| | vulnerable | (53)SG4 and later are not |\n| | | vulnerable. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2SGA | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| 12.2SL | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2SM | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| 12.2SO | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2SQ | Not | 12.2(50)SQ3 |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2SRA | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SRD |\n|------------+--------------+--------------------------------|\n| 12.2SRB | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SRD |\n|------------+--------------+--------------------------------|\n| 12.2SRC | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SRD |\n|------------+--------------+--------------------------------|\n| 12.2SRD | Not | 12.2(33)SRD6 |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2SRE | Not | 12.2(33)SRE4 |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2STE | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2SU | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.4 |\n|------------+--------------+--------------------------------|\n| | | Releases prior to 12.2(29a)SV |\n| | Not | are vulnerable; Releases 12.2 |\n| 12.2SV | vulnerable | (29a)SV and later are not |\n| | | vulnerable. Migrate to any |\n| | | release in 12.2SVD |\n|------------+--------------+--------------------------------|\n| 12.2SVA | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2SVC | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2SVD | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2SVE | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2SW | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| 12.2SX | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SXF |\n|------------+--------------+--------------------------------|\n| 12.2SXA | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SXF |\n|------------+--------------+--------------------------------|\n| 12.2SXB | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SXF |\n|------------+--------------+--------------------------------|\n| 12.2SXD | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SXF |\n|------------+--------------+--------------------------------|\n| 12.2SXE | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SXF |\n|------------+--------------+--------------------------------|\n| 12.2SXF | Not | 12.2(18)SXF17b |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2SXH | Not | 12.2(33)SXH8a |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2SXI | Not | 12.2(33)SXI6 |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2SXJ | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2SY | Not | 12.2(50)SY |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2SZ | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SB |\n|------------+--------------+--------------------------------|\n| 12.2T | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.4 |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2TPC | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| 12.2XA | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2XB | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.4 |\n|------------+--------------+--------------------------------|\n| 12.2XC | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2XD | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2XE | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2XF | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2XG | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2XH | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2XI | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2XJ | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2XK | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2XL | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2XM | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2XN | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| | See Cisco | |\n| 12.2XNA | IOS-XE | See Cisco IOS-XE Software |\n| | Software | Availability |\n| | Availability | |\n|------------+--------------+--------------------------------|\n| | See Cisco | |\n| 12.2XNB | IOS-XE | See Cisco IOS-XE Software |\n| | Software | Availability |\n| | Availability | |\n|------------+--------------+--------------------------------|\n| | See Cisco | |\n| 12.2XNC | IOS-XE | See Cisco IOS-XE Software |\n| | Software | Availability |\n| | Availability | |\n|------------+--------------+--------------------------------|\n| | See Cisco | |\n| 12.2XND | IOS-XE | See Cisco IOS-XE Software |\n| | Software | Availability |\n| | Availability | |\n|------------+--------------+--------------------------------|\n| | See Cisco | |\n| 12.2XNE | IOS-XE | See Cisco IOS-XE Software |\n| | Software | Availability |\n| | Availability | |\n|------------+--------------+--------------------------------|\n| | See Cisco | |\n| 12.2XNF | IOS-XE | See Cisco IOS-XE Software |\n| | Software | Availability |\n| | Availability | |\n|------------+--------------+--------------------------------|\n| | | Releases prior to 12.2(54)XO |\n| 12.2XO | Not | are vulnerable; Releases 12.2 |\n| | vulnerable | (54)XO and later are not |\n| | | vulnerable. |\n|------------+--------------+--------------------------------|\n| 12.2XQ | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2XR | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2XS | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2XT | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2XU | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2XV | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2XW | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2YA | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.4 |\n|------------+--------------+--------------------------------|\n| 12.2YB | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2YC | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2YD | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2YE | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2YF | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2YG | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2YH | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2YJ | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| 12.2YK | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2YL | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| 12.2YM | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.4 |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2YN | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| 12.2YO | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2YP | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2YQ | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2YR | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2YS | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2YT | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2YU | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2YV | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2YW | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2YX | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2YY | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2YZ | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| 12.2ZA | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SXF |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2ZB | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| 12.2ZC | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2ZD | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2ZE | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.4 |\n|------------+--------------+--------------------------------|\n| 12.2ZF | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.4 |\n|------------+--------------+--------------------------------|\n| 12.2ZG | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2ZH | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.4 |\n|------------+--------------+--------------------------------|\n| 12.2ZJ | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2ZL | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| 12.2ZP | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| 12.2ZU | Not | Vulnerable; first fixed in |\n| | vulnerable | Release 12.2SXH |\n|------------+--------------+--------------------------------|\n| 12.2ZX | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2ZY | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 12.2ZYA | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| Affected | First Fixed | First Fixed Release for All |\n| 12.3-Based | Release for | Advisories in the September |\n| Releases | This | 2011 Bundled Publication |\n| | Advisory | |\n|------------------------------------------------------------|\n| There are no affected 12.3 based releases |\n|------------------------------------------------------------|\n| Affected | First Fixed | First Fixed Release for All |\n| 12.4-Based | Release for | Advisories in the September |\n| Releases | This | 2011 Bundled Publication |\n| | Advisory | |\n|------------------------------------------------------------|\n| There are no affected 12.4 based releases |\n|------------------------------------------------------------|\n| Affected | First Fixed | First Fixed Release for All |\n| 15.0-Based | Release for | Advisories in the September |\n| Releases | This | 2011 Bundled Publication |\n| | Advisory | |\n|------------+--------------+--------------------------------|\n| 15.0M | 15.0(1)M7 | 15.0(1)M7 |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 15.0MR | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 15.0MRA | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | See Cisco | |\n| 15.0S | IOS-XE | See Cisco IOS-XE Software |\n| | Software | Availability |\n| | Availability | |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 15.0SA | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| 15.0SE | Not | Not vulnerable |\n| | vulnerable | |\n|------------+--------------+--------------------------------|\n| | See Cisco | |\n| 15.0SG | IOS-XE | See Cisco IOS-XE Software |\n| | Software | Availability |\n| | Availability | |\n|------------+--------------+--------------------------------|\n| | Vulnerable; | |\n| 15.0XA | first fixed | Vulnerable; first fixed in |\n| | in Release | Release 15.1T |\n| | 15.1T | |\n|------------+--------------+--------------------------------|\n| | See Cisco | |\n| 15.0XO | IOS-XE | See Cisco IOS-XE Software |\n| | Software | Availability |\n| | Availability | |\n|------------+--------------+--------------------------------|\n| Affected | First Fixed | First Fixed Release for All |\n| 15.1-Based | Release for | Advisories in the September |\n| Releases | This | 2011 Bundled Publication |\n| | Advisory | |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 15.1EY | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | Vulnerable; | |\n| 15.1GC | first fixed | Vulnerable; first fixed in |\n| | in Release | Release 15.1T |\n| | 15.1T | |\n|------------+--------------+--------------------------------|\n| 15.1M | 15.1(4)M1 | 15.1(4)M2; Available on |\n| | | 30-SEP-11 |\n|------------+--------------+--------------------------------|\n| | | Vulnerable; contact your |\n| | Not | support organization per the |\n| 15.1MR | vulnerable | instructions in the Obtaining |\n| | | Fixed Software section of this |\n| | | advisory. |\n|------------+--------------+--------------------------------|\n| | See Cisco | |\n| 15.1S | IOS-XE | See Cisco IOS-XE Software |\n| | Software | Availability |\n| | Availability | |\n|------------+--------------+--------------------------------|\n| | 15.1(1)T4; | |\n| | Available on | |\n| | 08-Dec-2011 | 15.1(2)T4 |\n| 15.1T | | |\n| | 15.1(2)T4 | 15.1(1)T4 on 8-Dec-2011 |\n| | | |\n| | 15.1(3)T2 | |\n|------------+--------------+--------------------------------|\n| | Vulnerable; | |\n| 15.1XB | first fixed | Vulnerable; first fixed in |\n| | in Release | Release 15.1T |\n| | 15.1T | |\n|------------+--------------+--------------------------------|\n| Affected | First Fixed | First Fixed Release for All |\n| 15.2-Based | Release for | Advisories in the September |\n| Releases | This | 2011 Bundled Publication |\n| | Advisory | |\n|------------------------------------------------------------|\n| There are no affected 15.2 based releases |\n+------------------------------------------------------------+\n\nCisco IOS XE Software\n+--------------------\n\nCisco IOS XE Software is not affected by the vulnerabilities\ndisclosed in this document. \n\n+------------------------------------------------------------+\n| Cisco | First Fixed | First Fixed Release for All |\n| IOS XE | Release For | Advisories in the September |\n| Release | This Advisory | 2011 Bundled Publication |\n|----------+----------------+--------------------------------|\n| 2.1.x | Not vulnerable | Vulnerable; migrate to 3.3.2S |\n| | | or later |\n|----------+----------------+--------------------------------|\n| 2.2.x | Not vulnerable | Vulnerable; migrate to 3.3.2S |\n| | | or later |\n|----------+----------------+--------------------------------|\n| 2.3.x | Not vulnerable | Vulnerable; migrate to 3.3.2S |\n| | | or later |\n|----------+----------------+--------------------------------|\n| 2.4.x | Not vulnerable | Vulnerable; migrate to 3.3.2S |\n| | | or later |\n|----------+----------------+--------------------------------|\n| 2.5.x | Not vulnerable | Vulnerable; migrate to 3.3.2S |\n| | | or later |\n|----------+----------------+--------------------------------|\n| 2.6.x | Not vulnerable | Vulnerable; migrate to 3.3.2S |\n| | | or later |\n|----------+----------------+--------------------------------|\n| 3.1.xS | Not vulnerable | Vulnerable; migrate to 3.3.2S |\n| | | or later |\n|----------+----------------+--------------------------------|\n| 3.1.xSG | Not vulnerable | Vulnerable; migrate to 3.2.0SG |\n| | | or later |\n|----------+----------------+--------------------------------|\n| 3.2.xS | Not vulnerable | Vulnerable; migrate to 3.3.2S |\n| | | or later |\n|----------+----------------+--------------------------------|\n| 3.2.xSG | Not vulnerable | Not vulnerable |\n|----------+----------------+--------------------------------|\n| 3.3.xS | Not vulnerable | 3.3.2S |\n|----------+----------------+--------------------------------|\n| 3.4.xS | Not vulnerable | Not vulnerable |\n+------------------------------------------------------------+\n\nFor mapping of Cisco IOS XE to Cisco IOS releases, please refer to\nthe Cisco IOS XE 2 Release Notes, Cisco IOS XE 3S Release Notes, and\nCisco IOS XE 3SG Release Notes. \n\nCisco IOS XR Software\n+--------------------\n\nCisco IOS XR Software is not affected by the vulnerabilities\ndisclosed in this document. \n\nCisco IOS XR Software is not affected by any of the vulnerabilities\nin the September 2011 bundled publication. \n\nWorkarounds\n===========\n\nWorkarounds that mitigate these vulnerabilities are not available. \n\nObtaining Fixed Software\n========================\n\nCisco has released free software updates that address these\nvulnerabilities. Prior to deploying software, customers should\nconsult their maintenance provider or check the software for feature\nset compatibility and known issues specific to their environment. \n\nCustomers may only install and expect support for the feature\nsets they have purchased. By installing, downloading, accessing\nor otherwise using such software upgrades, customers agree to be\nbound by the terms of Cisco\u0027s software license terms found at\nhttp://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html,\nor as otherwise set forth at Cisco.com Downloads at\nhttp://www.cisco.com/public/sw-center/sw-usingswc.shtml. \n\nDo not contact psirt@cisco.com or security-alert@cisco.com for\nsoftware upgrades. \n\nCustomers with Service Contracts\n+-------------------------------\n\nCustomers with contracts should obtain upgraded software through\ntheir regular update channels. For most customers, this means that\nupgrades should be obtained through the Software Center on Cisco\u0027s\nworldwide website at http://www.cisco.com. \n\nCustomers using Third Party Support Organizations\n+------------------------------------------------\n\nCustomers whose Cisco products are provided or maintained through\nprior or existing agreements with third-party support organizations,\nsuch as Cisco Partners, authorized resellers, or service providers\nshould contact that support organization for guidance and assistance\nwith the appropriate course of action in regards to this advisory. \n\nThe effectiveness of any workaround or fix is dependent on specific\ncustomer situations, such as product mix, network topology, traffic\nbehavior, and organizational mission. Due to the variety of affected\nproducts and releases, customers should consult with their service\nprovider or support organization to ensure any applied workaround or\nfix is the most appropriate for use in the intended network before it\nis deployed. \n\nCustomers without Service Contracts\n+----------------------------------\n\nCustomers who purchase direct from Cisco but do not hold a Cisco\nservice contract, and customers who purchase through third-party\nvendors but are unsuccessful in obtaining fixed software through\ntheir point of sale should acquire upgrades by contacting the Cisco\nTechnical Assistance Center (TAC). TAC contacts are as follows. \n\n * +1 800 553 2447 (toll free from within North America)\n * +1 408 526 7209 (toll call from anywhere in the world)\n * e-mail: tac@cisco.com\n\nCustomers should have their product serial number available and be\nprepared to give the URL of this notice as evidence of entitlement to\na free upgrade. Free upgrades for non-contract customers must be\nrequested through the TAC. \n\nRefer to\nhttp://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html\nfor additional TAC contact information, including localized telephone\nnumbers, and instructions and e-mail addresses for use in various\nlanguages. \n\nExploitation and Public Announcements\n=====================================\n\nThe Cisco PSIRT is not aware of any public announcements or malicious\nuse of the vulnerabilities described in this advisory. \n\nThese vulnerabilities were discovered while handling customer support\ncalls. \n\nStatus of this Notice: FINAL\n============================\n\nTHIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS AND DOES NOT IMPLY ANY\nKIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF\nMERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE\nINFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS\nAT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS\nDOCUMENT AT ANY TIME. \n\nA stand-alone copy or Paraphrase of the text of this document that\nomits the distribution URL in the following section is an\nuncontrolled copy, and may lack important information or contain\nfactual errors. \n\nDistribution\n============\n\nThis advisory is posted on Cisco\u0027s worldwide website at:\n\nhttp://www.cisco.com/warp/public/707/cisco-sa-20110928-zbfw.shtml\n\nIn addition to worldwide web posting, a text version of this notice\nis clear-signed with the Cisco PSIRT PGP key and is posted to the\nfollowing e-mail and Usenet news recipients. \n\n * cust-security-announce@cisco.com\n * first-bulletins@lists.first.org\n * bugtraq@securityfocus.com\n * vulnwatch@vulnwatch.org\n * cisco@spot.colorado.edu\n * cisco-nsp@puck.nether.net\n * full-disclosure@lists.grok.org.uk\n * comp.dcom.sys.cisco@newsgate.cisco.com\n\nFuture updates of this advisory, if any, will be placed on Cisco\u0027s\nworldwide website, but may or may not be actively announced on\nmailing lists or newsgroups. Users concerned about this problem are\nencouraged to check the above URL for any updates. \n\nRevision History\n================\n\n+------------------------------------------------------------+\n| Revision 1.0 | 2011-September-28 | Initial public release. |\n+------------------------------------------------------------+\n\nCisco Security Procedures\n=========================\n\nComplete information on reporting security vulnerabilities\nin Cisco products, obtaining assistance with security\nincidents, and registering to receive security information\nfrom Cisco, is available on Cisco\u0027s worldwide website at\nhttp://www.cisco.com/en/US/products/products_security_vulnerability_policy.html. \nThis includes instructions for press inquiries regarding\nCisco security notices. All Cisco security advisories are available at\nhttp://www.cisco.com/go/psirt. \n\n+--------------------------------------------------------------------\nCopyright 2010-2011 Cisco Systems, Inc. All rights reserved. \n+--------------------------------------------------------------------\n-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG v1.4.11 (GNU/Linux)\n\niF4EAREIAAYFAk6Cp2wACgkQQXnnBKKRMNDczwD8CQbBRLSBdYML0id/QNwXTCO0\nlKPvItw21VC8zN6eF1YA/3GNLczrQt1qm1NAFMnhNbQxWryUh7MiZLcVRQ+UA3HW\n=pHTr\n-----END PGP SIGNATURE-----\n. ----------------------------------------------------------------------\n\nThe new Secunia Corporate Software Inspector (CSI) 5.0 \nIntegrates with Microsoft WSUS \u0026 SCCM and supports Apple Mac OS X. \n\nGet a free trial now and qualify for a special discount:\nhttp://secunia.com/vulnerability_scanning/corporate/trial/\n\n----------------------------------------------------------------------\n\nTITLE:\nCisco IOS IPS and Zone-Based Firewall Two Denial of Service\nVulnerabilities\n\nSECUNIA ADVISORY ID:\nSA46198\n\nVERIFY ADVISORY:\nSecunia.com\nhttp://secunia.com/advisories/46198/\nCustomer Area (Credentials Required)\nhttps://ca.secunia.com/?page=viewadvisory\u0026vuln_id=46198\n\nRELEASE DATE:\n2011-09-30\n\nDISCUSS ADVISORY:\nhttp://secunia.com/advisories/46198/#comments\n\nAVAILABLE ON SITE AND IN CUSTOMER AREA:\n * Last Update\n * Popularity\n * Comments\n * Criticality Level\n * Impact\n * Where\n * Solution Status\n * Operating System / Software\n * CVE Reference(s)\n\nhttp://secunia.com/advisories/46198/\n\nONLY AVAILABLE IN CUSTOMER AREA:\n * Authentication Level\n * Report Reliability\n * Secunia PoC\n * Secunia Analysis\n * Systems Affected\n * Approve Distribution\n * Remediation Status\n * Secunia CVSS Score\n * CVSS\n\nhttps://ca.secunia.com/?page=viewadvisory\u0026vuln_id=46198\n\nONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:\n * AUTOMATED SCANNING\n\nhttp://secunia.com/vulnerability_scanning/personal/\nhttp://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/\n\nDESCRIPTION:\nTwo vulnerabilities have been reported in Cisco IOS, which can be\nexploited by malicious people to cause a DoS (Denial of Service). \n\nPlease see the vendor\u0027s advisory for a list of affected versions. \n\nSOLUTION:\nUpdate to a fixed version (please see the vendor\u0027s advisory for\ndetails). \n\nPROVIDED AND/OR DISCOVERED BY:\nReported by the vendor. \n\nORIGINAL ADVISORY:\nhttp://www.cisco.com/warp/public/707/cisco-sa-20110928-zbfw.shtml\n\nOTHER REFERENCES:\nFurther details available in Customer Area:\nhttp://secunia.com/vulnerability_intelligence/\n\nDEEP LINKS:\nFurther details available in Customer Area:\nhttp://secunia.com/vulnerability_intelligence/\n\nEXTENDED DESCRIPTION:\nFurther details available in Customer Area:\nhttp://secunia.com/vulnerability_intelligence/\n\nEXTENDED SOLUTION:\nFurther details available in Customer Area:\nhttp://secunia.com/vulnerability_intelligence/\n\nEXPLOIT:\nFurther details available in Customer Area:\nhttp://secunia.com/vulnerability_intelligence/\n\n----------------------------------------------------------------------\n\nAbout:\nThis Advisory was delivered by Secunia as a free service to help\nprivate users keeping their systems up to date against the latest\nvulnerabilities. \n\nSubscribe:\nhttp://secunia.com/advisories/secunia_security_advisories/\n\nDefinitions: (Criticality, Where etc.)\nhttp://secunia.com/advisories/about_secunia_advisories/\n\n\nPlease Note:\nSecunia recommends that you verify all advisories you receive by\nclicking the link. \nSecunia NEVER sends attached files with advisories. \nSecunia does not advise people to install third party patches, only\nuse those supplied by the vendor",
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.