Debian Security Advisory DSA 839-1 – Eric Romang discovered an insecurely created temporary file in apachetop, a realtime monitoring tool for the Apache webserver that could be exploited with a symlink attack to overwrite arbitrary files with the user id that runs apachetop.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/40405/dsa-839-1.txt
Source: https://packetstormsecurity.com/files/40405/Debian-Linux-Security-Advisory-839-1.html