Secunia Security Advisory – Cisco has acknowledged a vulnerability in some products, which potentially can be exploited by malicious people to bypass certain security restrictions.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/42062/sa17888.txt
Source: https://packetstormsecurity.com/files/42062/Secunia-Security-Advisory-17888.html