Debian Security Advisory 1164-1 – A programming error has been discovered in sendmail, an alternative mail transport agent for Debian, that could allow a remote attacker to crash the sendmail process by sending a specially crafted email message.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/49694/dsa-1164-1.txt
Source: https://packetstormsecurity.com/files/49694/Debian-Linux-Security-Advisory-1164-1.html