Cisco IOS Software H.323 Denial of Service Vulnerabilities

The H.323 implementation in Cisco IOS Software contains two
vulnerabilities that may be exploited remotely to cause a denial of service
(DoS) condition on a device that is running a vulnerable version of Cisco IOS
Software.

Cisco has released software updates that address these vulnerabilities. There are no workarounds to mitigate these vulnerabilities
other than disabling H.323 on the vulnerable device if H.323 is not
required.

This advisory is posted at
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20100324-h323[“https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20100324-h323”].

Note: The March 24, 2010, Cisco IOS Software Security Advisory bundled
publication includes seven Security Advisories. All the advisories address
vulnerabilities in Cisco IOS Software. Each advisory lists the releases that
correct the vulnerability or vulnerabilities detailed in the advisory. The
table at the following URL lists releases that correct all Cisco IOS Software
vulnerabilities that have been published on March 24, 2010, or earlier:

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20100324-bundle[“https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20100324-bundle”]

Individual publication links are in “Cisco Event Response:
Semiannual Cisco IOS Software Security Advisory Bundled Publication” at the
following link:

http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_mar10.html[“http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_mar10.html”]