A vulnerability has been reported in Cisco CSS (Content Services Switch), which can be exploited by malicious users to bypass certain security restrictions.

The vulnerability is caused due to an error in handling the situation when SSL clients fail to renegotiate the SSL session. This can be exploited to bypass client certificate authentication and may allow access to protected content.

Successful exploitation requires that client authentication using SSL certificates is enabled.

The vulnerability has been reported in the following products:
* Cisco CSS 11500 Series Content Services Switches with the CSS5-SSL-K9 SSL module
* Cisco 11501 Content Services Switch with SSL (CSS11501S-K9)

Solution
Fixes are available (see patch matrix in vendor advisory).
Further details available in Customer Area

Provided and/or discovered by
Reported by vendor.

Original Advisory
http://www.cisco.com/warp/public/707/cisco-sn-20050908-css.shtml

Deep Links
Links available in Customer Area