Cisco Security Advisory: Cisco CSS 11500 Series Content Services Switches (CSS) configured with Secure Socket Layer (SSL) termination services are vulnerable to a Denial of Service (DoS) attack when processing malformed client certificates. Cisco has made free software available to address this vulnerability. There are workarounds available to mitigate the effects of the vulnerability.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/40875/Cisco-11500.txt
Source: https://packetstormsecurity.com/files/40875/Cisco-11500.txt.html