A heap overflow has been found in Fetchmail v6.1.3 and below which allows remote attackers to execute code with the privileges of the user running fetchmail on Linux. It is a denial of service vulnerability on BSD. Fixed in v6.2.0.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/30591/fetchmail.6.1.3.txt
Source: https://packetstormsecurity.com/files/30591/fetchmail.6.1.3.txt.html