Multiple Cisco TelePresence products running Cisco TelePresence TC Software contain a vulnerability that could allow an unauthenticated, adjacent attacker to gain root shell access to an affected system. Updates are available.
A vulnerability in the implementation of firewall rules could allow an unauthenticated, adjacent attacker to gain root shell access to an affected system.
The vulnerability is due to improper implementation of allowed hosts in the firewall rules. An attacker could exploit this vulnerability by connecting to the management IP address of the affected system. The attacker would need to be logically or physically adjacent to exploit this vulnerability. An exploit could allow the attacker to gain root access to the shell.
Cisco has confirmed the vulnerability in a security advisory and has released software updates.
The following Cisco TelePresence products running vulnerable versions of Cisco TelePresence TC Software are affected:
Cisco TelePresence MX Series running on TC versions prior to TC4.2
Cisco TelePresence System EX Series running on TC versions prior to TC4.2
Cisco TelePresence Integrator C Series running on TC versions prior to TC4.2
Cisco TelePresence Profiles Series running on TC versions prior to TC4.2
Cisco TelePresence Quick Set Series running on TC versions prior to TC4.2
To exploit this vulnerability, the attacker needs access to the same physical or logical Layer 2 network as the targeted device. In addition, the attacker would need to know the management interface IP address to connect to the targeted system. 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.
An unauthenticated, adjacent attacker could exploit this vulnerability to gain unauthorized access to an unauthenticated root shell. Successful exploitation could lead to a complete system compromise.
The vulnerability is due to improper implementation of allowed hosts in the firewall rules.
An unauthenticated, adjacent attacker could exploit this vulnerability by connecting to the management IP address of an affected device. If successful, the attacker could gain root shell access to the targeted device, which could lead to a complete system compromise.
Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only privileged users to access administration or management systems.
Administrators are advised to allow only trusted users to have network access.
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 security vulnerability applies to the following combinations of products.
Cisco TelePresence TC Software
3.1 Base, .5
Alerts and bulletins on the Cisco Security Intelligence Operations Portal are highlighted by analysts in the
Cisco Threat Operations Center and represent a subset of the comprehensive content that is available through Cisco Security IntelliShield Alert Manager Service.
This customizable threat and vulnerability alert service provides security staff with access to timely, accurate, and credible information about threats and vulnerabilities that may affect their environment.
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.