Mandriva Linux Security Advisory – A flaw in fetchmail was discovered that allowed remote attackers to cause a denial of service (crash and persistent mail failure) via a malformed message with long headers. The crash only occurred when fetchmail was called in ‘-v -v’ mode.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/67527/MDVSA-2008-117.txt
Source: https://packetstormsecurity.com/files/67527/Mandriva-Linux-Security-Advisory-2008-117.html