A vulnerability in the Command Line Interface (CLI) of the Cisco NX-OS Software could allow an authenticated, local attacker to access arbitrary files on the device.
The vulnerability is due to improper filtering of user input. An attacker could exploit this vulnerability by leveraging the tar command to perform a directory traversal attack. An exploit could allow the attacker to access arbitrary files on an affected device.
Cisco has confirmed the vulnerability in a security notice; however, software updates are not available.
To exploit this vulnerability, an attacker must have local access to the targeted device. This access requirement 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 IDs CSCty07157, CSCty07159, CSCty07162, and CSCty07164 for the most complete list of affected product versions.
Vulnerable ProductsAt the time this alert was first published, the following versions of Cisco products were vulnerable. Later versions of Cisco products may also be affected.
- Cisco NX-OS Software version 6.1(4a) and prior
- Cisco Virtual Security Gateway for Nexus 1000V Series Switches version VSG1(5.2) and prior
- Cisco Nexus 1000V InterCloud for VMware version 5.2(1)IC1(1.2)
Products Confirmed Not VulnerableNo other Cisco products are currently known to be affected by these vulnerabilities.
Administrators are advised to contact the vendor regarding future updates and releases.
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.
Software updates are not available.
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-Dec-23
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