Cisco IOS SSL VPN Vulnerability

Cisco IOS® Software contains a vulnerability when the Cisco IOS SSL VPN
feature is configured with an HTTP redirect. Exploitation could allow a remote,
unauthenticated user to cause a memory leak on the affected devices, that could
result in a memory exhaustion condition that may cause device reloads, the
inability to service new TCP connections, and other denial of service (DoS)
conditions.

Cisco has released software updates that address this vulnerability. There is a workaround to mitigate this vulnerability.

This advisory is posted at
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20100922-sslvpn[“https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20100922-sslvpn”].

Note: The September 22, 2010, Cisco IOS Software Security Advisory bundled
publication includes six Cisco Security Advisories. Five of the advisories
address vulnerabilities in Cisco IOS Software, and one advisory addresses
vulnerabilities in Cisco Unified Communications Manager. 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 September 22, 2010, or
earlier:

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20100922-bundle[“https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20100922-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_sep10.html[“http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep10.html”]