Date: 10 March 2016
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AUSCERT External Security Bulletin Redistribution
Cisco TelePresence Video Communication Server Denial of
10 March 2016
AusCERT Security Bulletin Summary
Product: Cisco TelePresence Video Communication Server
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Denial of Service -- Existing Account
CVE Names: CVE-2016-1338
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Cisco Security Advisory
Cisco TelePresence Video Communication Server Denial of Service Vulnerability
Advisory ID: cisco-sa-20160309-vcs
Published: 2016 March 9 14:00 GMT
Version 1.0: Final
Base - 6.8
No workarounds available
Cisco Bug IDs:
A vulnerability in the Session Initiation Protocol (SIP) message handling
process of Cisco TelePresence Video Communication Server (VCS) could allow an
authenticated, remote attacker to cause a denial of service (DoS) condition.
The vulnerability is due to incorrect processing of specific incoming SIP
messages. An attacker could exploit this vulnerability by sending a malicious
SIP message to an affected device. A successful exploit could allow the
attacker to cause the device to stop processing VoIP calls.
Cisco has released software updates that address this vulnerability. There are
no workarounds that address this vulnerability.
This advisory is available at the following link:
Cisco TelePresence Video Communication Server (VCS) running software release
X8.5.2 or X8.5.1 is vulnerable.
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this
There are no workarounds that address this vulnerability.
When considering software upgrades, customers are advised to consult the Cisco
Security Advisories and Responses archive at http://www.cisco.com/go/psirt and
review subsequent advisories to determine exposure and a complete upgrade
In all cases, customers should ensure that the devices to upgrade contain
sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release. If
the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance providers.
Exploitation and Public Announcements
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.
Version Description Section Status Date
1.0 Initial public release. Final 2016-March-09
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FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS
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A standalone copy or paraphrase of the text of this document that omits the
distribution URL is an uncontrolled copy and may lack important information or
contain factual errors. The information in this document is intended for end
users of Cisco products.
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