Cisco Security Advisory
Cisco Wireless LAN Controller Client Disconnection Vulnerability
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AV:N/AC:L/Au:N/C:N/I:N/A:P/E:F/RL:U/RC:C
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A vulnerability in the Web Management GUI of the Cisco Wireless LAN Controller (WLC) could allow an unauthenticated, remote attacker to trigger client disconnection.
The vulnerability is due to a lack of access control to the Cisco WLC Web Management GUI. An attacker could exploit this vulnerability by connecting to the IP address of the Cisco WLC and triggering client disconnections. The attacker must reach the Cisco WLC management IP address on port 80 or port 443 via its wired interface.
Cisco has not released software updates that address this vulnerability. A workaround that mitigates this vulnerability is available. This advisory is available at the following link:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151016-wlc
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Administrators are advised to use CPU access control lists (ACLs) to restrict access to the Web Management GUI.
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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 upgrade 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 Updated Affected Products section and the Summary section. Affected Products and Summary Final 2015-October-20 1.0 Initial public release - Final 2015-October-16
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