A vulnerability in the license installation module of the Cisco Nexus 1000V could allow an authenticated, local attacker to execute arbitrary shell commands.
The vulnerability is due to a failure of the install all iso command to properly validate user-supplied input. An attacker could exploit this vulnerability by providing crafted arguments to the install all iso command.
Cisco has confirmed the vulnerability in a security notice and released software updates.
To exploit this vulnerability, an attacker would need local access to the targeted device, which decreases 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 CSCui21340 for a complete list of affected product versions.
Vulnerable ProductsAt the time this alert was first published, the following releases of Cisco products running on Cisco NX-OS Software were vulnerable. Later releases of Cisco products may also be affected.
- Cisco Nexus 1000V Switch for VMware vSphere versions 4.2(1)SV1(5.2b) and prior
- Cisco Nexus 1000V Switch for Microsoft Hyper-V version 5.2(1)SM1(5.1)
- Cisco Virtual Security Gateway for Nexus 1000V Series Switches 4.2(1)(VSG1(1)
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-Nov-15
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