Executive Summary

Title Cisco Unified Communications Manager Session Initiation Protocol Denial of Service Vulnerability
Name cisco-sa-20120926-cucm First vendor Publication 2012-09-26
Vendor Cisco Last vendor Modification 2012-09-26
Severity (Vendor) N/A Revision 1.0

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:C)
Cvss Base Score 7.8 Attack Range Network
Cvss Impact Score 6.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


Cisco Unified Communications Manager contains a vulnerability in its Session Initiation Protocol (SIP) implementation that could allow an unauthenticated, remote attacker to cause a critical service to fail, which could interrupt voice services. Affected devices must be configured to process SIP messages for this vulnerability to be exploitable.

Cisco has released free software updates that address this vulnerability. A workaround exists for customers who do not require SIP in their environment.

This advisory is available at:


Note: The September 26, 2012, Cisco IOS Software Security Advisory bundled publication includes 9 Cisco Security Advisories. Eight of the advisories address vulnerabilities in Cisco IOS Software, and one advisory addresses a vulnerability in Cisco Unified Communications Manager. Each Cisco IOS Software Security Advisory lists the Cisco IOS Software releases that correct the vulnerability or vulnerabilities detailed in the advisory as well as the Cisco IOS Software releases that correct all Cisco IOS Software vulnerabilities in the September 2012 bundled publication.

Individual publication links are in "Cisco Event Response: Semi-Annual Cisco IOS Software Security Advisory Bundled Publication" at the following link:


Cisco IOS Software and Cisco IOS XE Software are affected by the vulnerability described in this advisory. A separate Cisco Security Advisory has been published to disclose the vulnerability that affects Cisco IOS Software and Cisco IOS XE Software at the following location:


BEGIN PGP SIGNATURE Version: GnuPG/MacGPG2 v2.0.18 (Darwin) Comment: GPGTools - http://gpgtools.org

iF4EAREIAAYFAlBgiVQACgkQUddfH3/BbTqDrAD9GKw11Pk/9nwMJBzSQ7znHH8u JzDBtraEHMNDkyEacLAA/2ZbaNvWDOhuly4XCs84hvZhUtxnaHFCNheFGI3Go8nj =0fGN END PGP SIGNATURE _______________________________________________ cust-security-announce mailing list cust-security-announce@cisco.com To unsubscribe, send the command "unsubscribe" in the subject of your message to cust-security-announce-leave@cisco.com

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-20 Improper Input Validation

CPE : Common Platform Enumeration

Application 39
Os 208
Os 13

Nessus® Vulnerability Scanner

Date Description
2013-07-08 Name : The remote device is missing a vendor-supplied security patch.
File : cisco-sa-20120926-cucm.nasl - Type : ACT_GATHER_INFO
2012-09-28 Name : The remote device is missing a vendor-supplied security patch.
File : cisco-sa-20120926-sip.nasl - Type : ACT_GATHER_INFO

Alert History

If you want to see full details history, please login or register.
Date Informations
2014-02-17 10:22:05
  • Multiple Updates
2013-02-06 19:08:01
  • Multiple Updates