A vulnerability in the Password Change functionality in the Administrative Web Interface of the Cisco TelePresence Video Communication Server (VCS) Expressway could allow an authenticated, remote attacker to make unauthorized changes to user passwords.
The vulnerability is due to insufficient enforcement in the authorization process. An attacker could exploit this vulnerability by sending a specially crafted packet to the target device. An exploit could allow the attacker to change the password of active users to conduct further attacks.
Cisco has confirmed the vulnerability and software updates are available.
An authenticated, remote attacker could utilize this vulnerability by sending a specially crafted packet to the targeted device.
To exploit this vulnerability, an attacker requires authenticated access to the targeted system. Authenticated access may require the attacker to access trusted, internal networks. These requirements could limit 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.
Cisco has released bug ID CSCuv12338 for registered users, which contains additional details and an up-to-date list of affected product versions.
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 trusted users to have network access.
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 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 email at firstname.lastname@example.org.
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 2015-Aug-14
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