VAR-201101-0212
Vulnerability from variot - Updated: 2025-04-11 19:33Unspecified vulnerability in Cisco IOS 12.4(24)MD before 12.4(24)MD2 on the Cisco Content Services Gateway Second Generation (aka CSG2) allows remote attackers to cause a denial of service (device hang or reload) via crafted TCP packets, aka Bug ID CSCth17178, a different vulnerability than CVE-2011-0350. The problem is Bug ID CSCth17178 It is a problem. This vulnerability CVE-2011-0350 Is a different vulnerability.Skillfully crafted by a third party TCP Service disruption via packets (DoS) There is a possibility of being put into a state. Under certain configurations this vulnerability could allow:
- Customers to access sites that would normally match a billing policy to be accessed without being charged to the end customer
- Customers to access sites that would normally be denied based on configured restriction policies
Additionally, Cisco IOS Software Release 12.4(24)MD1 on the Cisco CSG2 contains two vulnerabilities that can be exploited by a remote, unauthenticated attacker to create a denial of service condition that prevents traffic from passing through the CSG2. A three-way handshake is not required to exploit either of these vulnerabilities.
Workarounds that mitigate these vulnerabilities are not available.
This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20110126-csg2.shtml.
Affected Products
The service policy bypass vulnerability affects all versions of the Cisco IOS Software for the CSG2 prior to the first fixed release, as indicated in the "Software Versions and Fixes" section of this advisory. No other Cisco IOS Software releases are affected.
Vulnerable Products +------------------
To determine the version of Cisco IOS Software that is running on the Cisco CSG2, issue the "show module" command from Cisco IOS Software on the switch on which the Cisco CSG2 module is installed to identify what modules and sub-modules are installed on the system.
Cisco CSG2 runs on the Cisco Service and Application Module for IP (SAMI) card, and is identified in the following example in slot 2 via the WS-SVC-SAMI-BB-K9 identification:
C7600#show module
Mod Ports Card Type Model Serial No.
--- ----- -------------------------------------- ------------------ -----------
1 2 Supervisor Engine 720 (Active) WS-SUP720-3BXL JAF1226ARQS
2 1 SAMI Module (csgk9) WS-SVC-SAMI-BB-K9 SAD113906P1
4 48 CEF720 48 port 10/100/1000mb Ethernet WS-X6748-GE-TX SAL1127T6XY
Mod MAC addresses Hw Fw Sw Status
--- ---------------------------------- ------ ------------ ------------ -------
1 001e.be6e.a018 to 001e.be6e.a01b 5.6 8.5(2) 12.2(33)SRC5 Ok
2 001d.45f8.f3dc to 001d.45f8.f3e3 2.1 8.7(0.22)FW1 12.4(2010040 Ok
4 001c.587a.ef20 to 001c.587a.ef4f 2.6 12.2(14r)S5 12.2(33)SRC5 Ok
Mod Sub-Module Model Serial Hw Status
---- --------------------------- ------------------ ----------- ------- -------
1 Policy Feature Card 3 WS-F6K-PFC3BXL JAF1226BNQM 1.8 Ok
1 MSFC3 Daughterboard WS-SUP720 JAF1226BNMC 3.1 Ok
2 SAMI Daughterboard 1 SAMI-DC-BB SAD114400L9 1.1 Other
2 SAMI Daughterboard 2 SAMI-DC-BB SAD114207FU 1.1 Other
4 Centralized Forwarding Card WS-F6700-CFC SAL1029VGFK 2.0 Ok
Mod Online Diag Status
---- -------------------
1 Pass
2 Pass
4 Pass
C7600#
After locating the correct slot, issue the "session slot processor <3-9>" command to open a console connection to the respective Cisco CSG2. Once connected to the Cisco CSG2, perform the "show version" command:
The following example shows that the Cisco CSG2 is running software Release 12.4(24)MD1:
CSG2#show version
Cisco IOS Software, SAMI Software (SAMI-CSGK9-M), Version 12.4(24)MD1, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2010 by Cisco Systems, Inc.
No other Cisco products are currently known to be affected by these vulnerabilities.
Details
The Cisco Content Services Gateway - Second Generation (CSG2) provides intelligent network capabilities such as flexible policy management and billing based on deep-packet inspection, as well as subscriber and application awareness capabilities that enable mobile operators to quickly and easily offer value-added, differentiated services over their mobile data networks.
The service policy bypass vulnerability affects configurations that allow end users to first access non-accounted or billed sites. After a user accesses a non-accounted site, it is possible to access other sites that are defined by a billing service policy or to access sites that may be blocked by other policies by sending specially crafted HTTP packets. This vulnerability only affects HTTP content traffic. HTTPS and other traffic types are not affected. A three-way handshake is not required to exploit either of these vulnerabilities. The vulnerabilities are triggered by TCP traffic that transits the Cisco CSG2.
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
- CSCtk35917 ("Service Policy Bypass Vulnerability")
CVSS Base Score - 6.4 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - Partial Integrity Impact - Partial Availability Impact - None
CVSS Temporal Score - 5.3 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed
- CSCth41891/CSCth17178 ("Crafted TCP packet causes CSG2 to restart")
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 the service policy bypass can allow customers to obtain access to sites that would normally be accounted and billed according to the billing policy without the billing policy being engaged. Additionally, customers could gain access to URLs that are configured in the Cisco CSG2 to be explicitly denied. Due to Cisco Bug ID CSCtg50821, the Cisco CSG2 may not automatically recover and may require a manual reload of the SAMI card by issuing the "hw-module module reset" CLI command from the switch.
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.
Each row of the Cisco IOS Software table (below) names a Cisco IOS release train. If a release train is vulnerable, then the earliest possible releases that contain the fix (along with the anticipated date of availability for each, if applicable) are listed in the "First Fixed Release" column of the table. The "Recommended Release" column indicates the releases which have fixes for all the published vulnerabilities at the time of this Advisory. A device running a release in the given train that is earlier than the release in a specific column (less than the First Fixed Release) is known to be vulnerable. Cisco recommends upgrading to a release equal to or later than the release in the "Recommended Releases" column of the table.
+---------------------------------------------------------------+ | Major | Availability of Repaired Releases | | Release | | |------------+--------------------------------------------------| | Affected | | | 12.x-Based | First Fixed Release | | Releases | | |------------+--------------------------------------------------| | 12.0 - | 12.0 through 12.3 based releases are not | | 12.3 | affected | |------------+--------------------------------------------------| | Affected | First Fixed Release | | 12.4-Based |--------------------------------------------------| | Releases | DoS | Service Policy Bypass | | | Vulnerabilities | Vulnerability | |------------+------------------+-------------------------------| | | All 12.4(11)MD | | | | releases are not | All 12.4(11)MD releases are | | | affected. | affected. Migrate to a fixed | | | | release. | | | All 12.4(15)MD | | | | releases are not | All 12.4(15)MD releases are | | | affected. | affected. Migrate to a fixed | | | | release. | | | All 12.4(22)MD | | | 12.4MD | releases are not | All 12.4(22)MD releases are | | | affected. | affected. Migrate to a fixed | | | | release. | | | Releases prior | | | | to 12.4(24)MD1 | All 12.4(24)MD releases prior | | | are not | to 12.4(24)MD3 are affected. | | | affected. | | | | | First fixed in 12.4(24)MD3 | | | First fixed in | | | | 12.4(24)MD2 | | |------------+------------------+-------------------------------| | | | All 12.4(22)MDA releases | | | | prior to 12.4(22)MDA5 are | | | | affected. First fixed in 12.4 | | | No releases | (22)MDA5 | | 12.4MDA | affected. | | | | | All 12.4(24)MDA releases | | | | prior to 12.4(24)MDA3 are | | | | affected. First fixed in 12.4 | | | | (24)MDA3 | |------------+--------------------------------------------------| | Affected | | | 15.X-Based | First Fixed Release | | Releases | | |------------+--------------------------------------------------| | 15.0 - | 15.0 through 15.1 based releases are not | | 15.1 | affected | +---------------------------------------------------------------+
Cisco IOS Software for the CSG2 is located on Cisco Software Download center at the following location: Cisco Interfaces and Modules --> Cisco Services Modules --> Cisco Service Application Module for IP.
Workarounds
There are no workarounds for these vulnerabilities.
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 aware of public announcements of the service billing bypass vulnerability on some external blog sites. However the Cisco PSIRT is not aware of any malicious use of the vulnerabilities described in this advisory.
These vulnerabilities were found by both internal testing and when 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-20110126-csg2.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-January-26 | 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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TITLE: Cisco Content Services Gateway Security Bypass and Denial of Service
SECUNIA ADVISORY ID: SA43052
VERIFY ADVISORY: Secunia.com http://secunia.com/advisories/43052/ Customer Area (Credentials Required) https://ca.secunia.com/?page=viewadvisory&vuln_id=43052
RELEASE DATE: 2011-01-27
DISCUSS ADVISORY: http://secunia.com/advisories/43052/#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/43052/
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=43052
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: Multiple vulnerabilities have been reported in Cisco Content Services Gateway (CSG2), which can be exploited by malicious people to bypass certain security restrictions and cause a DoS (Denial of Service).
SOLUTION: Apply fixes (please see the vendor's advisory for details).
PROVIDED AND/OR DISCOVERED BY: Reported by the vendor.
ORIGINAL ADVISORY: cisco-sa-20110126-csg2: http://www.cisco.com/en/US/products/products_security_advisory09186a0080b6791d.shtml
OTHER REFERENCES: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/
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EXTENDED DESCRIPTION: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/
EXTENDED SOLUTION: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/
EXPLOIT: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/
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": "Unspecified vulnerability in Cisco IOS 12.4(24)MD before 12.4(24)MD2 on the Cisco Content Services Gateway Second Generation (aka CSG2) allows remote attackers to cause a denial of service (device hang or reload) via crafted TCP packets, aka Bug ID CSCth17178, a different vulnerability than CVE-2011-0350. The problem is Bug ID CSCth17178 It is a problem. This vulnerability CVE-2011-0350 Is a different vulnerability.Skillfully crafted by a third party TCP Service disruption via packets (DoS) There is a possibility of being put into a state. Under certain\nconfigurations this vulnerability could allow:\n\n * Customers to access sites that would normally match a billing\n policy to be accessed without being charged to the end customer\n * Customers to access sites that would normally be denied based on\n configured restriction policies\n\nAdditionally, Cisco IOS Software Release 12.4(24)MD1 on the Cisco\nCSG2 contains two vulnerabilities that can be exploited by a remote,\nunauthenticated attacker to create a denial of service condition that\nprevents traffic from passing through the CSG2. A three-way handshake is not\nrequired to exploit either of these vulnerabilities. \n\nWorkarounds that mitigate these vulnerabilities are not available. \n\nThis advisory is posted at\nhttp://www.cisco.com/warp/public/707/cisco-sa-20110126-csg2.shtml. \n\nAffected Products\n=================\n\nThe service policy bypass vulnerability affects all versions of the\nCisco IOS Software for the CSG2 prior to the first fixed release, as\nindicated in the \"Software Versions and Fixes\" section of this advisory. No other Cisco IOS Software\nreleases are affected. \n\nVulnerable Products\n+------------------\n\nTo determine the version of Cisco IOS Software that is running on the\nCisco CSG2, issue the \"show module\" command from Cisco IOS Software on\nthe switch on which the Cisco CSG2 module is installed to identify what\nmodules and sub-modules are installed on the system. \n\nCisco CSG2 runs on the Cisco Service and Application Module for IP\n(SAMI) card, and is identified in the following example in slot 2 via\nthe WS-SVC-SAMI-BB-K9 identification:\n\n C7600#show module\n Mod Ports Card Type Model Serial No. \n --- ----- -------------------------------------- ------------------ -----------\n 1 2 Supervisor Engine 720 (Active) WS-SUP720-3BXL JAF1226ARQS\n 2 1 SAMI Module (csgk9) WS-SVC-SAMI-BB-K9 SAD113906P1\n 4 48 CEF720 48 port 10/100/1000mb Ethernet WS-X6748-GE-TX SAL1127T6XY\n\n Mod MAC addresses Hw Fw Sw Status\n --- ---------------------------------- ------ ------------ ------------ -------\n 1 001e.be6e.a018 to 001e.be6e.a01b 5.6 8.5(2) 12.2(33)SRC5 Ok\n 2 001d.45f8.f3dc to 001d.45f8.f3e3 2.1 8.7(0.22)FW1 12.4(2010040 Ok\n 4 001c.587a.ef20 to 001c.587a.ef4f 2.6 12.2(14r)S5 12.2(33)SRC5 Ok\n\n Mod Sub-Module Model Serial Hw Status\n ---- --------------------------- ------------------ ----------- ------- -------\n 1 Policy Feature Card 3 WS-F6K-PFC3BXL JAF1226BNQM 1.8 Ok\n 1 MSFC3 Daughterboard WS-SUP720 JAF1226BNMC 3.1 Ok\n 2 SAMI Daughterboard 1 SAMI-DC-BB SAD114400L9 1.1 Other\n 2 SAMI Daughterboard 2 SAMI-DC-BB SAD114207FU 1.1 Other\n 4 Centralized Forwarding Card WS-F6700-CFC SAL1029VGFK 2.0 Ok\n\n Mod Online Diag Status\n ---- -------------------\n 1 Pass\n 2 Pass\n 4 Pass\n C7600#\n\nAfter locating the correct slot, issue the \"session slot \u003cmodule number\u003e\nprocessor \u003c3-9\u003e\" command to open a console connection to the respective\nCisco CSG2. Once connected to the Cisco CSG2, perform the \"show version\"\ncommand:\n\nThe following example shows that the Cisco CSG2 is running software\nRelease 12.4(24)MD1:\n\n CSG2#show version\n Cisco IOS Software, SAMI Software (SAMI-CSGK9-M), Version 12.4(24)MD1, RELEASE SOFTWARE (fc2)\n Technical Support: http://www.cisco.com/techsupport\n Copyright (c) 1986-2010 by Cisco Systems, Inc. \n\nNo other Cisco products are currently known to be affected by these\nvulnerabilities. \n\nDetails\n=======\n\nThe Cisco Content Services Gateway - Second Generation (CSG2) provides\nintelligent network capabilities such as flexible policy management\nand billing based on deep-packet inspection, as well as subscriber and\napplication awareness capabilities that enable mobile operators to\nquickly and easily offer value-added, differentiated services over their\nmobile data networks. \n\nThe service policy bypass vulnerability affects configurations that\nallow end users to first access non-accounted or billed sites. After a\nuser accesses a non-accounted site, it is possible to access other sites\nthat are defined by a billing service policy or to access sites that may\nbe blocked by other policies by sending specially crafted HTTP packets. \nThis vulnerability only affects HTTP content traffic. HTTPS and other\ntraffic types are not affected. A three-way handshake is not required to exploit either of\nthese vulnerabilities. The vulnerabilities are triggered by TCP traffic\nthat transits the Cisco CSG2. \n\nVulnerability Scoring Details\n=============================\n\nCisco has provided scores for the vulnerabilities in this advisory based\non the Common Vulnerability Scoring System (CVSS). The CVSS scoring in\nthis Security Advisory is done in accordance with CVSS version 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 the\nvulnerability in individual networks. \n\nCisco has provided an FAQ to answer additional questions regarding CVSS\nat:\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* CSCtk35917 (\"Service Policy Bypass Vulnerability\")\n\nCVSS Base Score - 6.4\n Access Vector - Network\n Access Complexity - Low\n Authentication - None\n Confidentiality Impact - Partial\n Integrity Impact - Partial\n Availability Impact - None\n\nCVSS Temporal Score - 5.3\n Exploitability - Functional\n Remediation Level - Official-Fix\n Report Confidence - Confirmed\n\n* CSCth41891/CSCth17178 (\"Crafted TCP packet causes CSG2 to restart\")\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 the service policy bypass can allow customers\nto obtain access to sites that would normally be accounted and billed\naccording to the billing policy without the billing policy being\nengaged. Additionally, customers could gain access to URLs that are\nconfigured in the Cisco CSG2 to be explicitly denied. Due to Cisco\nBug ID CSCtg50821, the Cisco CSG2 may not automatically recover and\nmay require a manual reload of the SAMI card by issuing the \"hw-module\nmodule \u003cx\u003e reset\" CLI command from the switch. \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\nEach row of the Cisco IOS Software table (below) names a Cisco IOS\nrelease train. If a release train is vulnerable, then the earliest\npossible releases that contain the fix (along with the anticipated date\nof availability for each, if applicable) are listed in the \"First Fixed\nRelease\" column of the table. The \"Recommended Release\" column indicates\nthe releases which have fixes for all the published vulnerabilities\nat the time of this Advisory. A device running a release in the given\ntrain that is earlier than the release in a specific column (less than\nthe First Fixed Release) is known to be vulnerable. Cisco recommends\nupgrading to a release equal to or later than the release in the\n\"Recommended Releases\" column of the table. \n\n+---------------------------------------------------------------+\n| Major | Availability of Repaired Releases |\n| Release | |\n|------------+--------------------------------------------------|\n| Affected | |\n| 12.x-Based | First Fixed Release |\n| Releases | |\n|------------+--------------------------------------------------|\n| 12.0 - | 12.0 through 12.3 based releases are not |\n| 12.3 | affected |\n|------------+--------------------------------------------------|\n| Affected | First Fixed Release |\n| 12.4-Based |--------------------------------------------------|\n| Releases | DoS | Service Policy Bypass |\n| | Vulnerabilities | Vulnerability |\n|------------+------------------+-------------------------------|\n| | All 12.4(11)MD | |\n| | releases are not | All 12.4(11)MD releases are |\n| | affected. | affected. Migrate to a fixed |\n| | | release. |\n| | All 12.4(15)MD | |\n| | releases are not | All 12.4(15)MD releases are |\n| | affected. | affected. Migrate to a fixed |\n| | | release. |\n| | All 12.4(22)MD | |\n| 12.4MD | releases are not | All 12.4(22)MD releases are |\n| | affected. | affected. Migrate to a fixed |\n| | | release. |\n| | Releases prior | |\n| | to 12.4(24)MD1 | All 12.4(24)MD releases prior |\n| | are not | to 12.4(24)MD3 are affected. |\n| | affected. | |\n| | | First fixed in 12.4(24)MD3 |\n| | First fixed in | |\n| | 12.4(24)MD2 | |\n|------------+------------------+-------------------------------|\n| | | All 12.4(22)MDA releases |\n| | | prior to 12.4(22)MDA5 are |\n| | | affected. First fixed in 12.4 |\n| | No releases | (22)MDA5 |\n| 12.4MDA | affected. | |\n| | | All 12.4(24)MDA releases |\n| | | prior to 12.4(24)MDA3 are |\n| | | affected. First fixed in 12.4 |\n| | | (24)MDA3 |\n|------------+--------------------------------------------------|\n| Affected | |\n| 15.X-Based | First Fixed Release |\n| Releases | |\n|------------+--------------------------------------------------|\n| 15.0 - | 15.0 through 15.1 based releases are not |\n| 15.1 | affected |\n+---------------------------------------------------------------+\n\nCisco IOS Software for the CSG2 is located on Cisco Software Download\ncenter at the following location: Cisco Interfaces and Modules --\u003e Cisco\nServices Modules --\u003e Cisco Service Application Module for IP. \n\n\nWorkarounds\n===========\n\nThere are no workarounds for these vulnerabilities. \n\n\nObtaining Fixed Software\n========================\n\nCisco has released free software updates that address these\nvulnerabilities. Prior to deploying software, customers should consult\ntheir maintenance provider or check the software for feature set\ncompatibility 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 software\nupgrades. \n\nCustomers with Service Contracts\n+-------------------------------\n\nCustomers with contracts should obtain upgraded software through their\nregular update channels. For most customers, this means that upgrades\nshould be obtained through the Software Center on Cisco\u0027s worldwide\nwebsite at http://www.cisco.com. \n\nCustomers using Third Party Support Organizations\n+------------------------------------------------\n\nCustomers whose Cisco products are provided or maintained through prior\nor existing agreements with third-party support organizations, such\nas Cisco Partners, authorized resellers, or service providers should\ncontact that support organization for guidance and assistance with the\nappropriate 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 fix\nis the most appropriate for use in the intended network before it is\ndeployed. \n\nCustomers without Service Contracts\n+----------------------------------\n\nCustomers who purchase direct from Cisco but do not hold a Cisco service\ncontract, and customers who purchase through third-party vendors but are\nunsuccessful in obtaining fixed software through their point of sale\nshould acquire upgrades by contacting the Cisco Technical Assistance\nCenter (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 a\nfree upgrade. Free upgrades for non-contract customers must be requested\nthrough 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 aware of public announcements of the service billing\nbypass vulnerability on some external blog sites. However the Cisco\nPSIRT is not aware of any malicious use of the vulnerabilities described\nin this advisory. \n\nThese vulnerabilities were found by both internal testing and when\nhandling customer support calls. \n\nStatus of this Notice: FINAL\n============================\n\nTHIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS AND DOES NOT IMPLY\nANY KIND 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 omits\nthe distribution URL in the following section is an uncontrolled copy,\nand may lack important information or contain factual 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-20110126-csg2.shtml\n\nIn addition to worldwide web posting, a text version of this notice is\nclear-signed with the Cisco PSIRT PGP key and is posted to the following\ne-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 mailing\nlists or newsgroups. Users concerned about this problem are encouraged\nto check the above URL for any updates. \n\nRevision History\n================\n\n+------------------------------------------------------------+\n| Revision 1.0 | 2011-January-26 | Initial public release. |\n+------------------------------------------------------------+\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 v1.4.10 (GNU/Linux)\n\niF4EAREIAAYFAk1APx0ACgkQQXnnBKKRMNBE4QD/WfH2GXgAJub+4ech0JhHizBO\n98PLNKENutVsJpa0eCUA/2hKwfofNSloEh7i5JZXrwKFcjgBYJcPnDa1W2JRHSfZ\n=EZt9\n-----END PGP SIGNATURE-----\n\n_______________________________________________\nFull-Disclosure - We believe in it. \nCharter: http://lists.grok.org.uk/full-disclosure-charter.html\nHosted and sponsored by Secunia - http://secunia.com/\n. ----------------------------------------------------------------------\n\n\nSecure your corporate defenses and reduce complexity in handling vulnerability threats with the new Secunia Vulnerability Intelligence Manager (VIM). \n\nRequest a free trial: \nhttp://secunia.com/products/corporate/vim/\n\n\n----------------------------------------------------------------------\n\nTITLE:\nCisco Content Services Gateway Security Bypass and Denial of Service\n\nSECUNIA ADVISORY ID:\nSA43052\n\nVERIFY ADVISORY:\nSecunia.com\nhttp://secunia.com/advisories/43052/\nCustomer Area (Credentials Required)\nhttps://ca.secunia.com/?page=viewadvisory\u0026vuln_id=43052\n\nRELEASE DATE:\n2011-01-27\n\nDISCUSS ADVISORY:\nhttp://secunia.com/advisories/43052/#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/43052/\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=43052\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:\nMultiple vulnerabilities have been reported in Cisco Content Services\nGateway (CSG2), which can be exploited by malicious people to bypass\ncertain security restrictions and cause a DoS (Denial of Service). \n\nSOLUTION:\nApply fixes (please see the vendor\u0027s advisory for details). \n\nPROVIDED AND/OR DISCOVERED BY:\nReported by the vendor. \n\nORIGINAL ADVISORY:\ncisco-sa-20110126-csg2:\nhttp://www.cisco.com/en/US/products/products_security_advisory09186a0080b6791d.shtml\n\nOTHER REFERENCES:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nDEEP LINKS:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nEXTENDED DESCRIPTION:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nEXTENDED SOLUTION:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\n\nEXPLOIT:\nFurther details available in Customer Area:\nhttp://secunia.com/products/corporate/EVM/\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 |
|---|
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.