Gentoo Linux Security Advisory GLSA 200412-17 – kfax contains several buffer overflows potentially leading to execution of arbitrary code.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/35417/glsa-200412-17.txt
Source: https://packetstormsecurity.com/files/35417/Gentoo-Linux-Security-Advisory-200412-17.html