Cisco Security Advisory
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AV:N/AC:H/Au:S/C:C/I:C/A:C/E:F/RL:OF/RC:C
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A vulnerability exists in Cisco Application Control Engine (ACE) software. Administrative users may be logged into an unintended context (virtual instance) on the ACE when running in multicontext mode.
Cisco has released software updates that address this vulnerability. A workaround is available for this vulnerability. This advisory is available at the following link:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120620-ace
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Vulnerable Products
Cisco ACE appliances or modules are vulnerable when running in multicontext mode. In order for this vulnerability to be exploited two or more contexts must be configured with the same management IP address. An administrator could be logged in to a different context than intended, when attempting to access the management IP address of their intended context. The administrator must have valid login credentials for the unintended context, otherwise, access will be denied.Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this vulnerability.
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Cisco ACE appliances or modules are vulnerable when running in multicontext mode. For this vulnerability to be exploited two or more contexts must be configured with the same management IP address. The administrator must have valid login credentials for the incorrect context when being logged in.
This vulnerability is described in Cisco bug ID CSCts30631 (registered customers only) and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2012-3063.
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Configure a unique management IP address for each context on the Cisco ACE. A configuration reference is available at
http://www.cisco.com/en/US/partner/docs/app_ntwk_services/data_center_app_services/ace_appliances/vA3_2_2/configuration/quick/guide/setup.html#wp1010576
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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 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.
This vulnerability has been fixed in Cisco ACE software versions A4(2.3) and A5(1.1) . These software versions are available for both the ACE appliance and ACE module from Cisco Software Navigator at http://www.cisco.com/cisco/software/navigator.html.
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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.
This vulnerability was found during the troubleshooting of a customer case.
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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 LessRevision 1.1 2012-June-20 Corrected CVE ID Revision 1.0 2012-June-20 Initial public release
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