CISCO-SA-C9800-CAPWAP-MDNS-6PSN7GKU
Vulnerability from csaf_cisco - Published: 2022-04-13 16:00 - Updated: 2022-04-13 16:00Summary
Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Denial of Service Vulnerability
Notes
Summary: A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to inadequate input validation of incoming CAPWAP packets encapsulating multicast DNS (mDNS) queries. An attacker could exploit this vulnerability by connecting to a wireless network and sending a crafted mDNS query, which would flow through and be processed by the wireless controller. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
This advisory is part of the April 2022 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: April 2022 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication. ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74561"]
Vulnerable Products: This vulnerability affects the following Cisco devices if they are running a vulnerable release of Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family and have the mDNS gateway feature enabled (disabled by default):
Catalyst 9800 Embedded Wireless Controllers for Catalyst 9300, 9400, and 9500 Series Switches
Catalyst 9800 Series Wireless Controllers
Catalyst 9800-CL Wireless Controllers for Cloud
Embedded Wireless Controllers on Catalyst Access Points
For information about which Cisco software releases are vulnerable, see the Fixed Software ["#fs"] section of this advisory.
Determine the Device Configuration
To determine whether the mDNS gateway feature is enabled on a device, log in to the device CLI and issue the command show mdns-sd summary. If the mDNS gateway feature is enabled, then issue the command show run | section wlan to verify whether any WLANs are configured to use the mDNS gateway. If both conditions are true, the device is vulnerable.
The following example shows the output of the commands listed above for a device that has the mDNS gateway feature globally enabled and active on a WLAN:
WLC#show mdns-sd summary
mDNS Gateway: Enabled
Mode: Default
Active Query Periodicity (in minutes): 30
Transport Type: IPv4
mDNS AP service policy: default-mdns-service-policy
WLC#show run | section wlan
aaa attribute list wlan_lobby_access
wlan ssidname policy default-policy-profile
wlan ssidname 1 ssidname
mdns-sd-interface gateway
no shutdown
Products Confirmed Not Vulnerable: Only products listed in the Vulnerable Products ["#vp"] section of this advisory are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect the following Cisco products:
IOS Software
IOS XR Software
Meraki products
NX-OS Software
Wireless LAN Controller (WLC) AireOS Software
Workarounds: There are no workarounds that address this vulnerability.
Fixed Software: Cisco has released free software updates ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#ssu"] that address the vulnerability described in this advisory. Customers with service contracts that entitle them to regular software updates should obtain security fixes through their usual update channels.
Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.html ["https://www.cisco.com/c/en/us/products/end-user-license-agreement.html"]
Additionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.
The Cisco Support and Downloads page ["https://www.cisco.com/c/en/us/support/index.html"] on Cisco.com provides information about licensing and downloads. This page can also display customer device support coverage for customers who use the My Devices tool.
When considering software upgrades ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"], customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page ["https://www.cisco.com/go/psirt"], to determine exposure and a complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html ["https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"]
Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.
Cisco IOS and IOS XE Software
To help customers determine their exposure to vulnerabilities in Cisco IOS and IOS XE Software, Cisco provides the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] to identify any Cisco Security Advisories that impact a specific software release and the earliest release that fixes the vulnerabilities described in each advisory (“First Fixed”). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities described in all the advisories identified (“Combined First Fixed”).
Customers can use the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] to search advisories in the following ways:
Choose the software and one or more releases
Upload a .txt file that includes a list of specific releases
Enter the output of the show version command
After initiating a search, customers can customize the search to include all Cisco Security Advisories, a specific advisory, or all advisories in the most recent bundled publication.
Customers can also use the following form to determine whether a release is affected by any Cisco Security Advisory by entering a Cisco IOS or IOS XE Software release—for example, 15.1(4)M2 or 3.13.8S:
By default, the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] includes results only for vulnerabilities that have a Critical or High Security Impact Rating (SIR). To include results for Medium SIR vulnerabilities, customers can use the Cisco Software Checker on Cisco.com and check the Medium check box in the drop-down list under Impact Rating when customizing a search.
Vulnerability Policy: To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
Exploitation and Public Announcements: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
Source: This vulnerability was found during the resolution of a Cisco TAC support case.
Legal Disclaimer: 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 standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.
8.6 (High)
Affected products
Known affected
61 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
16.11.1
Cisco / Cisco IOS XE Software
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Vendor Fix
fix
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16.12.1
Cisco / Cisco IOS XE Software
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Vendor Fix
fix
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17.1.1
Cisco / Cisco IOS XE Software
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fix
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17.2.1
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.11.1a
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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17.3.1
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.11.1b
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.11.2
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.11.1s
Cisco / Cisco IOS XE Software
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Vendor Fix
fix
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17.4.1
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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17.5.1
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.11.1c
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.12.1s
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.12.1a
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.12.1c
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.12.1w
Cisco / Cisco IOS XE Software
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Vendor Fix
fix
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16.12.2
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.12.1y
Cisco / Cisco IOS XE Software
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Vendor Fix
fix
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16.12.2a
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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17.1.1a
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.12.3
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.12.2s
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.12.1x
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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17.1.1s
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.12.1t
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.12.2t
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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17.3.2
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.12.4
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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17.2.1r
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.12.3s
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.12.1z
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.12.3a
Cisco / Cisco IOS XE Software
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Vendor Fix
fix
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17.1.2
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17.2.1a
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Vendor Fix
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17.1.1t
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Vendor Fix
fix
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17.2.1v
Cisco / Cisco IOS XE Software
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Vendor Fix
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17.3.3
Cisco / Cisco IOS XE Software
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Vendor Fix
fix
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17.4.2
Cisco / Cisco IOS XE Software
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Vendor Fix
fix
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17.2.2
Cisco / Cisco IOS XE Software
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Vendor Fix
fix
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16.12.4a
Cisco / Cisco IOS XE Software
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Vendor Fix
fix
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17.3.1a
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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17.3.1w
Cisco / Cisco IOS XE Software
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Vendor Fix
fix
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16.12.5
Cisco / Cisco IOS XE Software
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Vendor Fix
fix
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17.3.2a
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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17.1.3
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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17.4.1a
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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17.3.1x
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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17.4.1b
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.12.6
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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17.2.3
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.12.1z1
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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17.3.1z
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.12.5a
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.12.5b
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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17.3.3a
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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17.5.1a
Cisco / Cisco IOS XE Software
|
— |
Vendor Fix
fix
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17.4.1c
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.12.1z2
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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16.12.6a
Cisco / Cisco IOS XE Software
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— |
Vendor Fix
fix
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17.4.2a
Cisco / Cisco IOS XE Software
|
— |
Vendor Fix
fix
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17.11.99SW
Cisco / Cisco IOS XE Software
|
— |
Vendor Fix
fix
|
References
10 references
Acknowledgments
{
"document": {
"acknowledgments": [
{
"summary": "This vulnerability was found during the resolution of a Cisco TAC support case."
}
],
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"notes": [
{
"category": "summary",
"text": "A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis vulnerability is due to inadequate input validation of incoming CAPWAP packets encapsulating multicast DNS (mDNS) queries. An attacker could exploit this vulnerability by connecting to a wireless network and sending a crafted mDNS query, which would flow through and be processed by the wireless controller. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\n\r\n\r\nThis advisory is part of the April 2022 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: April 2022 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication. [\"https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74561\"]",
"title": "Summary"
},
{
"category": "general",
"text": "This vulnerability affects the following Cisco devices if they are running a vulnerable release of Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family and have the mDNS gateway feature enabled (disabled by default):\r\n\r\nCatalyst 9800 Embedded Wireless Controllers for Catalyst 9300, 9400, and 9500 Series Switches\r\nCatalyst 9800 Series Wireless Controllers\r\nCatalyst 9800-CL Wireless Controllers for Cloud\r\nEmbedded Wireless Controllers on Catalyst Access Points\r\n\r\nFor information about which Cisco software releases are vulnerable, see the Fixed Software [\"#fs\"] section of this advisory.\r\n Determine the Device Configuration\r\nTo determine whether the mDNS gateway feature is enabled on a device, log in to the device CLI and issue the command show mdns-sd summary. If the mDNS gateway feature is enabled, then issue the command show run | section wlan to verify whether any WLANs are configured to use the mDNS gateway. If both conditions are true, the device is vulnerable.\r\n\r\nThe following example shows the output of the commands listed above for a device that has the mDNS gateway feature globally enabled and active on a WLAN:\r\n\r\n\r\nWLC#show mdns-sd summary\r\nmDNS Gateway: Enabled\r\nMode: Default\r\nActive Query Periodicity (in minutes): 30\r\nTransport Type: IPv4\r\nmDNS AP service policy: default-mdns-service-policy\r\n\r\nWLC#show run | section wlan\r\naaa attribute list wlan_lobby_access\r\n wlan ssidname policy default-policy-profile\r\nwlan ssidname 1 ssidname\r\n mdns-sd-interface gateway\r\n no shutdown",
"title": "Vulnerable Products"
},
{
"category": "general",
"text": "Only products listed in the Vulnerable Products [\"#vp\"] section of this advisory are known to be affected by this vulnerability.\r\n\r\nCisco has confirmed that this vulnerability does not affect the following Cisco products:\r\n\r\nIOS Software\r\nIOS XR Software\r\nMeraki products\r\nNX-OS Software\r\nWireless LAN Controller (WLC) AireOS Software",
"title": "Products Confirmed Not Vulnerable"
},
{
"category": "general",
"text": "There are no workarounds that address this vulnerability.",
"title": "Workarounds"
},
{
"category": "general",
"text": "Cisco has released free software updates [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#ssu\"] that address the vulnerability described in this advisory. Customers with service contracts that entitle them to regular software updates should obtain security fixes through their usual update channels.\r\n\r\nCustomers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:\r\nhttps://www.cisco.com/c/en/us/products/end-user-license-agreement.html [\"https://www.cisco.com/c/en/us/products/end-user-license-agreement.html\"]\r\n\r\nAdditionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.\r\n\r\nThe Cisco Support and Downloads page [\"https://www.cisco.com/c/en/us/support/index.html\"] on Cisco.com provides information about licensing and downloads. This page can also display customer device support coverage for customers who use the My Devices tool.\r\n\r\nWhen considering software upgrades [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"], customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page [\"https://www.cisco.com/go/psirt\"], to determine exposure and a complete upgrade solution.\r\n\r\nIn all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.\r\n Customers Without Service Contracts\r\nCustomers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html [\"https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html\"]\r\n\r\nCustomers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.\r\n Cisco IOS and IOS XE Software\r\nTo help customers determine their exposure to vulnerabilities in Cisco IOS and IOS XE Software, Cisco provides the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] to identify any Cisco Security Advisories that impact a specific software release and the earliest release that fixes the vulnerabilities described in each advisory (\u201cFirst Fixed\u201d). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities described in all the advisories identified (\u201cCombined First Fixed\u201d).\r\n\r\nCustomers can use the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] to search advisories in the following ways:\r\n\r\nChoose the software and one or more releases\r\nUpload a .txt file that includes a list of specific releases\r\nEnter the output of the show version command\r\n\r\nAfter initiating a search, customers can customize the search to include all Cisco Security Advisories, a specific advisory, or all advisories in the most recent bundled publication.\r\n\r\nCustomers can also use the following form to determine whether a release is affected by any Cisco Security Advisory by entering a Cisco IOS or IOS XE Software release\u2014for example, 15.1(4)M2 or 3.13.8S:\r\n\r\n\r\n\r\nBy default, the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] includes results only for vulnerabilities that have a Critical or High Security Impact Rating (SIR). To include results for Medium SIR vulnerabilities, customers can use the Cisco Software Checker on Cisco.com and check the Medium check box in the drop-down list under Impact Rating when customizing a search.",
"title": "Fixed Software"
},
{
"category": "general",
"text": "To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html\"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.",
"title": "Vulnerability Policy"
},
{
"category": "general",
"text": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.",
"title": "Exploitation and Public Announcements"
},
{
"category": "general",
"text": "This vulnerability was found during the resolution of a Cisco TAC support case.",
"title": "Source"
},
{
"category": "legal_disclaimer",
"text": "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.\r\n\r\nA standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.",
"title": "Legal Disclaimer"
}
],
"publisher": {
"category": "vendor",
"contact_details": "psirt@cisco.com",
"issuing_authority": "Cisco PSIRT",
"name": "Cisco",
"namespace": "https://wwww.cisco.com"
},
"references": [
{
"category": "self",
"summary": "Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Denial of Service Vulnerability",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-c9800-capwap-mdns-6PSn7gKU"
},
{
"category": "external",
"summary": "Cisco Event Response: April 2022 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication",
"url": "https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74561"
},
{
"category": "external",
"summary": "Cisco Security Vulnerability Policy",
"url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
},
{
"category": "external",
"summary": "free software updates",
"url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#ssu"
},
{
"category": "external",
"summary": "https://www.cisco.com/c/en/us/products/end-user-license-agreement.html",
"url": "https://www.cisco.com/c/en/us/products/end-user-license-agreement.html"
},
{
"category": "external",
"summary": "Cisco\u0026nbsp;Support and Downloads page",
"url": "https://www.cisco.com/c/en/us/support/index.html"
},
{
"category": "external",
"summary": "considering software upgrades",
"url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"
},
{
"category": "external",
"summary": "Cisco\u0026nbsp;Security Advisories page",
"url": "https://www.cisco.com/go/psirt"
},
{
"category": "external",
"summary": "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html",
"url": "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"
},
{
"category": "external",
"summary": "Cisco\u0026nbsp;Software Checker",
"url": "https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"
}
],
"title": "Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Denial of Service Vulnerability",
"tracking": {
"current_release_date": "2022-04-13T16:00:00+00:00",
"generator": {
"date": "2024-05-10T23:14:11+00:00",
"engine": {
"name": "TVCE"
}
},
"id": "cisco-sa-c9800-capwap-mdns-6PSn7gKU",
"initial_release_date": "2022-04-13T16:00:00+00:00",
"revision_history": [
{
"date": "2022-04-13T15:41:23+00:00",
"number": "1.0.0",
"summary": "Initial public release."
}
],
"status": "final",
"version": "1.0.0"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"branches": [
{
"category": "service_pack",
"name": "16.11.1",
"product": {
"name": "16.11.1",
"product_id": "CSAFPID-227918"
}
},
{
"category": "service_pack",
"name": "16.11.1a",
"product": {
"name": "16.11.1a",
"product_id": "CSAFPID-252271"
}
},
{
"category": "service_pack",
"name": "16.11.1b",
"product": {
"name": "16.11.1b",
"product_id": "CSAFPID-260741"
}
},
{
"category": "service_pack",
"name": "16.11.2",
"product": {
"name": "16.11.2",
"product_id": "CSAFPID-261240"
}
},
{
"category": "service_pack",
"name": "16.11.1s",
"product": {
"name": "16.11.1s",
"product_id": "CSAFPID-261465"
}
},
{
"category": "service_pack",
"name": "16.11.1c",
"product": {
"name": "16.11.1c",
"product_id": "CSAFPID-264096"
}
}
],
"category": "product_version",
"name": "16.11"
},
{
"branches": [
{
"category": "service_pack",
"name": "16.12.1",
"product": {
"name": "16.12.1",
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}
},
{
"category": "service_pack",
"name": "16.12.1s",
"product": {
"name": "16.12.1s",
"product_id": "CSAFPID-265735"
}
},
{
"category": "service_pack",
"name": "16.12.1a",
"product": {
"name": "16.12.1a",
"product_id": "CSAFPID-265841"
}
},
{
"category": "service_pack",
"name": "16.12.1c",
"product": {
"name": "16.12.1c",
"product_id": "CSAFPID-267110"
}
},
{
"category": "service_pack",
"name": "16.12.1w",
"product": {
"name": "16.12.1w",
"product_id": "CSAFPID-267240"
}
},
{
"category": "service_pack",
"name": "16.12.2",
"product": {
"name": "16.12.2",
"product_id": "CSAFPID-267605"
}
},
{
"category": "service_pack",
"name": "16.12.1y",
"product": {
"name": "16.12.1y",
"product_id": "CSAFPID-271938"
}
},
{
"category": "service_pack",
"name": "16.12.2a",
"product": {
"name": "16.12.2a",
"product_id": "CSAFPID-272047"
}
},
{
"category": "service_pack",
"name": "16.12.3",
"product": {
"name": "16.12.3",
"product_id": "CSAFPID-273445"
}
},
{
"category": "service_pack",
"name": "16.12.2s",
"product": {
"name": "16.12.2s",
"product_id": "CSAFPID-273509"
}
},
{
"category": "service_pack",
"name": "16.12.1x",
"product": {
"name": "16.12.1x",
"product_id": "CSAFPID-273649"
}
},
{
"category": "service_pack",
"name": "16.12.1t",
"product": {
"name": "16.12.1t",
"product_id": "CSAFPID-274832"
}
},
{
"category": "service_pack",
"name": "16.12.2t",
"product": {
"name": "16.12.2t",
"product_id": "CSAFPID-275538"
}
},
{
"category": "service_pack",
"name": "16.12.4",
"product": {
"name": "16.12.4",
"product_id": "CSAFPID-277147"
}
},
{
"category": "service_pack",
"name": "16.12.3s",
"product": {
"name": "16.12.3s",
"product_id": "CSAFPID-277255"
}
},
{
"category": "service_pack",
"name": "16.12.1z",
"product": {
"name": "16.12.1z",
"product_id": "CSAFPID-277256"
}
},
{
"category": "service_pack",
"name": "16.12.3a",
"product": {
"name": "16.12.3a",
"product_id": "CSAFPID-277321"
}
},
{
"category": "service_pack",
"name": "16.12.4a",
"product": {
"name": "16.12.4a",
"product_id": "CSAFPID-278881"
}
},
{
"category": "service_pack",
"name": "16.12.5",
"product": {
"name": "16.12.5",
"product_id": "CSAFPID-280463"
}
},
{
"category": "service_pack",
"name": "16.12.6",
"product": {
"name": "16.12.6",
"product_id": "CSAFPID-280937"
}
},
{
"category": "service_pack",
"name": "16.12.1z1",
"product": {
"name": "16.12.1z1",
"product_id": "CSAFPID-281320"
}
},
{
"category": "service_pack",
"name": "16.12.5a",
"product": {
"name": "16.12.5a",
"product_id": "CSAFPID-281438"
}
},
{
"category": "service_pack",
"name": "16.12.5b",
"product": {
"name": "16.12.5b",
"product_id": "CSAFPID-281654"
}
},
{
"category": "service_pack",
"name": "16.12.1z2",
"product": {
"name": "16.12.1z2",
"product_id": "CSAFPID-283831"
}
},
{
"category": "service_pack",
"name": "16.12.6a",
"product": {
"name": "16.12.6a",
"product_id": "CSAFPID-285325"
}
}
],
"category": "product_version",
"name": "16.12"
},
{
"branches": [
{
"category": "service_pack",
"name": "17.1.1",
"product": {
"name": "17.1.1",
"product_id": "CSAFPID-245377"
}
},
{
"category": "service_pack",
"name": "17.1.1a",
"product": {
"name": "17.1.1a",
"product_id": "CSAFPID-272932"
}
},
{
"category": "service_pack",
"name": "17.1.1s",
"product": {
"name": "17.1.1s",
"product_id": "CSAFPID-274818"
}
},
{
"category": "service_pack",
"name": "17.1.2",
"product": {
"name": "17.1.2",
"product_id": "CSAFPID-277338"
}
},
{
"category": "service_pack",
"name": "17.1.1t",
"product": {
"name": "17.1.1t",
"product_id": "CSAFPID-277348"
}
},
{
"category": "service_pack",
"name": "17.1.3",
"product": {
"name": "17.1.3",
"product_id": "CSAFPID-280652"
}
}
],
"category": "product_version",
"name": "17.1"
},
{
"branches": [
{
"category": "service_pack",
"name": "17.2.1",
"product": {
"name": "17.2.1",
"product_id": "CSAFPID-251225"
}
},
{
"category": "service_pack",
"name": "17.2.1r",
"product": {
"name": "17.2.1r",
"product_id": "CSAFPID-277194"
}
},
{
"category": "service_pack",
"name": "17.2.1a",
"product": {
"name": "17.2.1a",
"product_id": "CSAFPID-277343"
}
},
{
"category": "service_pack",
"name": "17.2.1v",
"product": {
"name": "17.2.1v",
"product_id": "CSAFPID-278002"
}
},
{
"category": "service_pack",
"name": "17.2.2",
"product": {
"name": "17.2.2",
"product_id": "CSAFPID-278504"
}
},
{
"category": "service_pack",
"name": "17.2.3",
"product": {
"name": "17.2.3",
"product_id": "CSAFPID-280939"
}
}
],
"category": "product_version",
"name": "17.2"
},
{
"branches": [
{
"category": "service_pack",
"name": "17.3.1",
"product": {
"name": "17.3.1",
"product_id": "CSAFPID-254712"
}
},
{
"category": "service_pack",
"name": "17.3.2",
"product": {
"name": "17.3.2",
"product_id": "CSAFPID-277099"
}
},
{
"category": "service_pack",
"name": "17.3.3",
"product": {
"name": "17.3.3",
"product_id": "CSAFPID-278019"
}
},
{
"category": "service_pack",
"name": "17.3.1a",
"product": {
"name": "17.3.1a",
"product_id": "CSAFPID-279338"
}
},
{
"category": "service_pack",
"name": "17.3.1w",
"product": {
"name": "17.3.1w",
"product_id": "CSAFPID-279339"
}
},
{
"category": "service_pack",
"name": "17.3.2a",
"product": {
"name": "17.3.2a",
"product_id": "CSAFPID-280555"
}
},
{
"category": "service_pack",
"name": "17.3.1x",
"product": {
"name": "17.3.1x",
"product_id": "CSAFPID-280783"
}
},
{
"category": "service_pack",
"name": "17.3.1z",
"product": {
"name": "17.3.1z",
"product_id": "CSAFPID-281331"
}
},
{
"category": "service_pack",
"name": "17.3.3a",
"product": {
"name": "17.3.3a",
"product_id": "CSAFPID-282017"
}
}
],
"category": "product_version",
"name": "17.3"
},
{
"branches": [
{
"category": "service_pack",
"name": "17.4.1",
"product": {
"name": "17.4.1",
"product_id": "CSAFPID-262588"
}
},
{
"category": "service_pack",
"name": "17.4.2",
"product": {
"name": "17.4.2",
"product_id": "CSAFPID-278020"
}
},
{
"category": "service_pack",
"name": "17.4.1a",
"product": {
"name": "17.4.1a",
"product_id": "CSAFPID-280770"
}
},
{
"category": "service_pack",
"name": "17.4.1b",
"product": {
"name": "17.4.1b",
"product_id": "CSAFPID-280899"
}
},
{
"category": "service_pack",
"name": "17.4.1c",
"product": {
"name": "17.4.1c",
"product_id": "CSAFPID-282116"
}
},
{
"category": "service_pack",
"name": "17.4.2a",
"product": {
"name": "17.4.2a",
"product_id": "CSAFPID-285328"
}
}
],
"category": "product_version",
"name": "17.4"
},
{
"branches": [
{
"category": "service_pack",
"name": "17.5.1",
"product": {
"name": "17.5.1",
"product_id": "CSAFPID-262590"
}
},
{
"category": "service_pack",
"name": "17.5.1a",
"product": {
"name": "17.5.1a",
"product_id": "CSAFPID-282046"
}
}
],
"category": "product_version",
"name": "17.5"
},
{
"branches": [
{
"category": "service_pack",
"name": "17.11.99SW",
"product": {
"name": "17.11.99SW",
"product_id": "CSAFPID-296860"
}
}
],
"category": "product_version",
"name": "17.11SW"
}
],
"category": "product_family",
"name": "Cisco IOS XE Software"
}
],
"category": "vendor",
"name": "Cisco"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2022-20682",
"ids": [
{
"system_name": "Cisco Bug ID",
"text": "CSCvy07717"
}
],
"notes": [
{
"category": "other",
"text": "Complete.",
"title": "Affected Product Comprehensiveness"
}
],
"product_status": {
"known_affected": [
"CSAFPID-227918",
"CSAFPID-227920",
"CSAFPID-245377",
"CSAFPID-251225",
"CSAFPID-252271",
"CSAFPID-254712",
"CSAFPID-260741",
"CSAFPID-261240",
"CSAFPID-261465",
"CSAFPID-262588",
"CSAFPID-262590",
"CSAFPID-264096",
"CSAFPID-265735",
"CSAFPID-265841",
"CSAFPID-267110",
"CSAFPID-267240",
"CSAFPID-267605",
"CSAFPID-271938",
"CSAFPID-272047",
"CSAFPID-272932",
"CSAFPID-273445",
"CSAFPID-273509",
"CSAFPID-273649",
"CSAFPID-274818",
"CSAFPID-274832",
"CSAFPID-275538",
"CSAFPID-277099",
"CSAFPID-277147",
"CSAFPID-277194",
"CSAFPID-277255",
"CSAFPID-277256",
"CSAFPID-277321",
"CSAFPID-277338",
"CSAFPID-277343",
"CSAFPID-277348",
"CSAFPID-278002",
"CSAFPID-278019",
"CSAFPID-278020",
"CSAFPID-278504",
"CSAFPID-278881",
"CSAFPID-279338",
"CSAFPID-279339",
"CSAFPID-280463",
"CSAFPID-280555",
"CSAFPID-280652",
"CSAFPID-280770",
"CSAFPID-280783",
"CSAFPID-280899",
"CSAFPID-280937",
"CSAFPID-280939",
"CSAFPID-281320",
"CSAFPID-281331",
"CSAFPID-281438",
"CSAFPID-281654",
"CSAFPID-282017",
"CSAFPID-282046",
"CSAFPID-282116",
"CSAFPID-283831",
"CSAFPID-285325",
"CSAFPID-285328",
"CSAFPID-296860"
]
},
"release_date": "2022-04-13T16:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "Cisco has released software updates that address this vulnerability.",
"product_ids": [
"CSAFPID-227918",
"CSAFPID-227920",
"CSAFPID-245377",
"CSAFPID-251225",
"CSAFPID-252271",
"CSAFPID-254712",
"CSAFPID-260741",
"CSAFPID-261240",
"CSAFPID-261465",
"CSAFPID-262588",
"CSAFPID-262590",
"CSAFPID-264096",
"CSAFPID-265735",
"CSAFPID-265841",
"CSAFPID-267110",
"CSAFPID-267240",
"CSAFPID-267605",
"CSAFPID-271938",
"CSAFPID-272047",
"CSAFPID-272932",
"CSAFPID-273445",
"CSAFPID-273509",
"CSAFPID-273649",
"CSAFPID-274818",
"CSAFPID-274832",
"CSAFPID-275538",
"CSAFPID-277099",
"CSAFPID-277147",
"CSAFPID-277194",
"CSAFPID-277255",
"CSAFPID-277256",
"CSAFPID-277321",
"CSAFPID-277338",
"CSAFPID-277343",
"CSAFPID-277348",
"CSAFPID-278002",
"CSAFPID-278019",
"CSAFPID-278020",
"CSAFPID-278504",
"CSAFPID-278881",
"CSAFPID-279338",
"CSAFPID-279339",
"CSAFPID-280463",
"CSAFPID-280555",
"CSAFPID-280652",
"CSAFPID-280770",
"CSAFPID-280783",
"CSAFPID-280899",
"CSAFPID-280937",
"CSAFPID-280939",
"CSAFPID-281320",
"CSAFPID-281331",
"CSAFPID-281438",
"CSAFPID-281654",
"CSAFPID-282017",
"CSAFPID-282046",
"CSAFPID-282116",
"CSAFPID-283831",
"CSAFPID-285325",
"CSAFPID-285328",
"CSAFPID-296860"
],
"url": "https://software.cisco.com"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 8.6,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"CSAFPID-227918",
"CSAFPID-227920",
"CSAFPID-245377",
"CSAFPID-251225",
"CSAFPID-252271",
"CSAFPID-254712",
"CSAFPID-260741",
"CSAFPID-261240",
"CSAFPID-261465",
"CSAFPID-262588",
"CSAFPID-262590",
"CSAFPID-264096",
"CSAFPID-265735",
"CSAFPID-265841",
"CSAFPID-267110",
"CSAFPID-267240",
"CSAFPID-267605",
"CSAFPID-271938",
"CSAFPID-272047",
"CSAFPID-272932",
"CSAFPID-273445",
"CSAFPID-273509",
"CSAFPID-273649",
"CSAFPID-274818",
"CSAFPID-274832",
"CSAFPID-275538",
"CSAFPID-277099",
"CSAFPID-277147",
"CSAFPID-277194",
"CSAFPID-277255",
"CSAFPID-277256",
"CSAFPID-277321",
"CSAFPID-277338",
"CSAFPID-277343",
"CSAFPID-277348",
"CSAFPID-278002",
"CSAFPID-278019",
"CSAFPID-278020",
"CSAFPID-278504",
"CSAFPID-278881",
"CSAFPID-279338",
"CSAFPID-279339",
"CSAFPID-280463",
"CSAFPID-280555",
"CSAFPID-280652",
"CSAFPID-280770",
"CSAFPID-280783",
"CSAFPID-280899",
"CSAFPID-280937",
"CSAFPID-280939",
"CSAFPID-281320",
"CSAFPID-281331",
"CSAFPID-281438",
"CSAFPID-281654",
"CSAFPID-282017",
"CSAFPID-282046",
"CSAFPID-282116",
"CSAFPID-283831",
"CSAFPID-285325",
"CSAFPID-285328",
"CSAFPID-296860"
]
}
],
"title": "Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Denial of Service Vulnerability"
}
]
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.