Debian Security Advisory 1648-1 – Dmitry E. Oboukhov discovered that the test.alert script used in one of the alert functions in mon, a system to monitor hosts or services and alert about problems, creates temporary files insecurely, which may lead to a local denial of service through symlink attacks.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/70719/dsa-1648-1.txt
Source: https://packetstormsecurity.com/files/70719/Debian-Linux-Security-Advisory-1648-1.html