Cisco Security AdvisoryMedium
Advisory ID:
cisco-sa-20160831-wlc-1
First Published:
2016 August 31 16:00 GMT
Last Updated:
2016 September 6 14:43 GMT
Version 1.2:
Workarounds:
No workarounds available
Cisco Bug IDs:
CVSS Score:
Base 5.7,
Temporal 4.7
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AV:A/AC:M/Au:N/C:N/I:N/A:C/E:F/RL:OF/RC:C
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AV:A/AC:M/Au:N/C:N/I:N/A:C/E:F/RL:OF/RC:C
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A vulnerability in the traffic stream metrics (TSM) implemented with the Inter-Access Point Protocol (IAPP) of the Cisco Wireless LAN Controller (WLC) could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition because the process on the WLC unexpectedly restarts. The DoS condition could occur when a subsequent Simple Network Management Protocol (SNMP) request is received for TSM information.
The device reloads when an SNMP request for TSM information is received. An attacker could exploit this vulnerability by sending crafted IAPP packets followed by an SNMP request for TSM information to the targeted device. An exploit could allow the attacker to cause a DoS condition when the WLC unexpectedly restarts.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160831-wlc-1
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Vulnerable Products
This vulnerability affects all 6.x through 8.x releases of Cisco Wireless LAN Controller prior to the first fixed release for those releases. The first fixed releases for those releases are 8.0.140, 8.2.121.0, and 8.3.102.0.Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this vulnerability.
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There are no workarounds that address this vulnerability.
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Cisco provides information about fixed software in Cisco bugs, which are accessible through the Cisco Bug Search Tool.
When considering software upgrades, customers are advised to consult the Cisco Security Advisories and Responses archive at http://www.cisco.com/go/psirt and review subsequent advisories 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.
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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.
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To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
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Show LessVersion Description Section Status Date 1.2 Added information about which releases are vulnerable. Vulnerable Products Final 2016-September-06 1.1 Updated the impact to be more accurate. Summary Final 2016-September-02 1.0 Initial public release. — Final 2016-August-31
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