Format string vulnerability in mmsyslog function allows remote attackers to execute arbitrary code via (1) the USER command to mmpop3d for mmmail 0.0.13 and earlier, (2) the HELO command to mmsmtpd for mmmail 0.0.13 and earlier, or (3) the USER command to mmftpd 0.0.7 and earlier.
http://www.securityfocus.com/bid/4999
http://www.securityfocus.com/bid/4990
http://www.iss.net/security_center/static/9337.php
http://www.iss.net/security_center/static/9336.php
http://online.securityfocus.com/archive/1/276523
http://mmondor.gobot.ca/software/linux/mmmail-changelog.txt
http://mmondor.gobot.ca/software/linux/mmftpd-changelog.txt
http://archives.neohapsis.com/archives/bugtraq/2002-06/0095.html