cisco-sa-expressway-vcs-dos-n6xxTMZB: Cisco Expressway Series and TelePresence Video Communication Server Denial of Service Vulnerability
First published: Wed Oct 07 2020(Updated: )
A vulnerability in the Session Initiation Protocol (SIP) of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to incorrect handling of incoming SIP traffic. An attacker could exploit this vulnerability by sending a series of SIP packets to an affected device. A successful exploit could allow the attacker to exhaust memory on an affected device, causing it to crash and leading to a DoS condition. There are no workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-expressway-vcs-dos-n6xxTMZB
Credit: This vulnerability was found during the resolution a Cisco TAC support case
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Expressway | ||
| Cisco TelePresence Video Communication Server Firmware |
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Reference Links
Frequently Asked Questions
What is the severity of cisco-sa-expressway-vcs-dos-n6xxTMZB?
The cisco-sa-expressway-vcs-dos-n6xxTMZB vulnerability is classified as high severity due to its potential to cause a denial of service.
How do I fix cisco-sa-expressway-vcs-dos-n6xxTMZB?
To fix the cisco-sa-expressway-vcs-dos-n6xxTMZB vulnerability, it is recommended to apply the latest patches or updates released by Cisco for the affected software.
What systems are affected by cisco-sa-expressway-vcs-dos-n6xxTMZB?
The cisco-sa-expressway-vcs-dos-n6xxTMZB vulnerability affects Cisco Expressway Series and Cisco TelePresence Video Communication Server devices.
Can cisco-sa-expressway-vcs-dos-n6xxTMZB be exploited remotely?
Yes, cisco-sa-expressway-vcs-dos-n6xxTMZB can be exploited by unauthenticated remote attackers.
What could an attacker achieve by exploiting cisco-sa-expressway-vcs-dos-n6xxTMZB?
By exploiting cisco-sa-expressway-vcs-dos-n6xxTMZB, an attacker could cause a denial of service condition, disrupting the affected device's functionality.
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- canonical/cisco telepresence video communication server firmware