A remote exploitable vulnerability exists in clamav-milter when used with sendmail due to an insecure call to popen(). ClamAV versions prior to 0.91.2 are affected.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/58838/n.runs-SA-2007.025.txt
Source: https://packetstormsecurity.com/files/58838/n.runs-SA-2007.025.txt.html