Cisco Security Advisory
Cisco Wireless LAN Controller wIPS Denial of Service Vulnerability
Medium
Advisory ID:
cisco-sa-20160831-wlc-2
First Published:
2016 August 31 16:00 GMT
Last Updated:
2016 September 6 14:43 GMT
Version 1.1:
Workarounds:
No workarounds available
Cisco Bug IDs:
CVSS Score:
Base 6.1,
Temporal 5.0
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AV:A/AC:L/Au:N/C:N/I:N/A:C/E:F/RL:OF/RC:C
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AV:A/AC:L/Au:N/C:N/I:N/A:C/E:F/RL:OF/RC:C
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A vulnerability in the Cisco Adaptive Wireless Intrusion Prevention System (wIPS) implementation in the Cisco Wireless LAN Controller (WLC) could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition because the wIPS process on the WLC unexpectedly restarts.
The vulnerability is due to lack of proper input validation of wIPS protocol packets. An attacker could exploit this vulnerability by sending a malformed wIPS packet to the affected device. An exploit could allow the attacker to cause a DoS condition when the wIPS process on 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-2
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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 1.1 Added information about which releases are vulnerable. Vulnerable Products Final 2016-September-06 1.0 Initial public release. - Final 2016-August-31
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