Secunia Security Advisory – Some vulnerabilities have been reported in Tor, which can be exploited by malicious people to conduct spoofing attacks and cause a DoS (Denial of Service).
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/78708/sa35546.txt
Source: https://packetstormsecurity.com/files/78708/Secunia-Security-Advisory-35546.html