Cisco Security Advisory
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AV:L/AC:L/Au:S/C:C/I:C/A:C/E:F/RL:U/RC:C
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A vulnerability in the command-line interface (CLI) of the Cisco TelePresence Video Communication Server (VCS) Expressway could allow an authenticated, local attacker to inject arbitrary arguments to a script on an affected system.
The vulnerability is due to insufficient input validation of content on a local file. An attacker could exploit this vulnerability by writing arbitrary code to the affected file. An exploit could allow the attacker to write options to a file that has root privileges.
Cisco has confirmed the vulnerability; however, software updates are not available.
To exploit this vulnerability, an attacker must authenticate and have local access to the targeted device. These access requirements may reduce 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.
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Cisco has released bug ID CSCuv12542 for registered users, which contains additional details and an up-to-date list of affected product versions.
Vulnerable Products
At the time this alert was first published, Cisco TelePresence VCS Expressway version X8.5.2 was vulnerable. Later releases of Cisco TelePresence VCS Expressway may also be vulnerable.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 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.
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Software updates are not available.
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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 2015-Aug-18
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