U radu programske podrške za Cisco Unified Communications Manager utvrđen je sigurnosni propust kojeg udaljeni napadači mogu iskoristiti za izvođenje napada uskraćivanjem usluge.

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Cisco Unified Communications Manager Session Initiation Protocol Denial of
Service Vulnerability

Advisory ID: cisco-sa-20120926-cucm

Revision 1.0

For Public Release 2012 September 26 16:00  UTC (GMT)
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Summary
=======

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:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120926-cucm

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:

http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep12.html


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:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120926-sip

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