Argument injection vulnerability in Request Tracker (RT) 3.8.x before 3.8.15 and 4.0.x before 4.0.8 allows remote attackers to create arbitrary files via unspecified vectors related to the GnuPG client.
http://www.debian.org/security/2012/dsa-2567
http://lists.bestpractical.com/pipermail/rt-announce/2012-October/000212.html