Cisco Security Advisory
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AV:L/AC:L/Au:S/C:C/I:C/A:C/E:F/RL:OF/RC:C
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Cisco Nexus OS contains a vulnerability that could allow an authenticated, local attacker to execute arbitrary commands on a targeted device.
The vulnerability is due to improper sanitization of user-supplied values to command line interface commands. An authenticated, local attacker could exploit the vulnerability by issuing commands that contain malicious options on the device command line interface. If successful, the attacker could gain elevated privileges on the targeted device.
Cisco confirmed the vulnerability within software release notes and released software updates.
To exploit this vulnerability, an attacker must log in locally to a vulnerable device. Because of the critical function that affected products often serve in most environments, local access to an affected device is likely carefully controlled. As a result, the source of exploits is restricted to only trusted users currently granted local access, limiting the potential for exploitation.
Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
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Cisco confirmed the vulnerability in Cisco bug IDs CSCtf40008, CSCtg18363, CSCtr44645, CSCts10195, CSCts10188, and CSCtr50762.
Vulnerable Products
Cisco has published a list of affected Cisco Nexus OS Software and Cisco Unified Computing System software releases in the bug reports. The Vendor Announcements section of this alert contains links to the bug reports.Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by these vulnerabilities.
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Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to access affected devices.
Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.
Administrators are advised to monitor affected systems.
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Cisco customers with active contracts can obtain updates through the Software Center at the following link: Cisco. Cisco customers without contracts can obtain upgrades by contacting the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via e-mail at tac@cisco.com.
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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 1.0 Initial Release NA Final 2011-Oct-27
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