Debian Security Advisory DSA 557-1 – When the program pppoe is running setuid root, an attacker could overwrite any file on the file system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/34574/dsa-557.txt
Source: https://packetstormsecurity.com/files/34574/dsa-557.txt.html