POPFile before 0.22.4 allows remote attackers to cause a denial of service (application crash) via unspecified vectors involving character sets within e-mail messages.
http://www.vupen.com/english/advisories/2006/0698
http://www.securityfocus.com/bid/16792
http://www.debian.org/security/2006/dsa-1061
http://secunia.com/advisories/20205
http://secunia.com/advisories/18975
http://popfile.sourceforge.net/cgi-bin/wiki.pl?ReleaseNotes/0.22.4