Cisco Unified Communications Manager contains a vulnerability that could allow an authenticated, remote attacker to conduct directory traversal attacks. Updates are available.
A vulnerability in the administrative web interface of Cisco Unified Communications Manager could allow an authenticated, remote attacker to obtain the contents of arbitrary files on an affected device.
The vulnerability is due to a failure to properly sanitize user-supplied input passed to a specific function. An attacker could exploit this vulnerability by supplying a series of directory traversal characters, allowing the attacker to designate a file outside the restricted directory to be returned. An exploit could allow the attacker to obtain the contents of any file that is readable by the Apache Tomcat service account.
Cisco has confirmed the vulnerability in a security notice and released software updates.
At the time this alert was first published, Cisco Unified Communications Manager versions 9.1(1) and prior were vulnerable. Later releases of Cisco Unified Communications Manager may also be vulnerable.
To exploit this vulnerability, an attacker must be able to authenticate to a 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.
Cisco has released a security notice at the following link: CVE-2013-5528
Customers are advised to consult Cisco bug ID CSCui78815 for a complete list of affected product versions.
An authenticated, remote attacker could exploit this vulnerability to access the contents of arbitrary files on an affected device. A successful exploit could be used to conduct further attacks.
The vulnerability is due to insufficient sanitization of user-supplied input passed to a specific function from the administrative web interface of an affected device.
An authenticated, remote attacker could exploit this vulnerability by supplying a series of directory traversal characters, allowing the attacker to designate a file outside the restricted directory to be returned. An exploit could allow the attacker to obtain the contents of any file that is readable by the Apache Tomcat service account.
Administrators are advised to apply the appropriate updates.
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 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 email@example.com for assistance.
The security vulnerability applies to the following combinations of products.
Cisco Unified Communications Manager
7.0 Base, (1), (2) | 7.1 Base, (3), (5), (5b) | 8.0 Base, (2c), (3) | 8.5 Base | 8.6 Base | 9.0 Base | 9.0(1) Base | 9.1 Base | 9.1(1) Base
The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.