Cisco Bug: CSCvu78519 - Cisco Expressway and TelePresence Video Communication Server Denial of Service Vuln
Oct 07, 2020
- Cisco TelePresence Video Communication Server (VCS)
- Cisco TelePresence Video Communication Server Model
- Cisco Expressway
Known Affected Releases
X8.10.1 X8.10.3 X8.11.4
Symptom: 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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-expressway-vcs-dos-n6xxTMZB Conditions: At the time of publication, this vulnerability affected Cisco Expressway Series and Cisco TelePresence VCS releases X12.6.3 and earlier.
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