A vulnerability in the remote debug shell in Cisco Unified Computing System PALO adapter cards could allow an authenticated, local attacker to execute commands on the underlying operating system with elevated privileges.
The vulnerability is due to insufficient handling of special characters. An attacker could exploit this vulnerability by sending malformed parameters to the show-macstats command. A successful exploit could grant the attacker root access to the underlying operating system.
Cisco has confirmed the vulnerability in a security notice and released software updates.
To exploit this vulnerability, an attacker must be able to authenticate and have local access to a targeted device. These access requirements decrease the likelihood of a successful exploit.
Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
Customers are advised to consult Cisco bug ID CSCub13772 for a complete list of affected product versions.
Vulnerable ProductsAt the time this alert was first published, Cisco Unified Computing System versions 2.1 and prior were vulnerable. Later releases of Cisco Unified Computing System may also be vulnerable.
Products Confirmed Not VulnerableNo other Cisco products are currently known to be affected by these vulnerabilities.
Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to access local systems.
Administrators are advised to allow only privileged users to access administration or management systems.
Administrators are advised to monitor affected systems.
Cisco customers with active contracts should contact their Cisco support team for assistance in upgrading to a software version that includes fixes for this vulnerability. Cisco customers without contracts may contact the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via email at firstname.lastname@example.org for assistance.
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.
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.
Version Description Section Status Date 1.0 Initial Release NA Final 2013-Sep-26
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