Gentoo Linux Security Advisory GLSA 200507-21 – fetchmail does not properly validate UIDs coming from a POP3 mail server. The UID is placed in a fixed length buffer on the stack, which can be overflown. Versions less than 6.2.5.2 are affected.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/38907/glsa-200507-21.txt
Source: https://packetstormsecurity.com/files/38907/Gentoo-Linux-Security-Advisory-200507-21.html