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Category:   Application (VoIP)  >   Cisco Unified Presence Vendors:   Cisco
Cisco Unified Presence Packet Processing Flaw Lets Remote Users Deny Service
SecurityTracker Alert ID:  1028219
SecurityTracker URL:
CVE Reference:   CVE-2013-1137   (Links to External Site)
Date:  Feb 28 2013
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 8.6, 9.0, 9.1
Description:   A vulnerability was reported in Cisco Unified Presence. A remote user can cause denial of service conditions.

A remote user can send specially crafted packets to a Session Initiation Protocol (SIP) port on TCP port 5060 to increase CPU utilization.

Cisco has assigned Cisco bug ID CSCua89930 to this vulnerability.

Impact:   A remote user can consume excessive CPU resources on the target system.
Solution:   The vendor has issued a fix.

The vendor's advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Resource error

Message History:   None.

 Source Message Contents

Subject:  Cisco Security Advisory: Cisco Unified Presence Server Denial of Service Vulnerability

Hash: SHA256

Cisco Security Advisory: Cisco Unified Presence Server Denial of Service

Advisory ID: cisco-sa-20130227-cups

Revision 1.0

For Public Release 2013 February 27 16:00  UTC (GMT)



Cisco Unified Presence Server (CUPS) contains a vulnerability that could
allow an unauthenticated, remote attacker to cause a denial of service
(DoS) condition on an affected device. Cisco has released free software
updates that address this vulnerability. A workaround is available to
mitigate this vulnerability. This advisory is available at the following

Version: GnuPG v1.4.11 (GNU/Linux)

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