The drawAdminTools_PackageInstaller function in shared/inc/forms/packager.php in Domain Technologie Control (DTC) before 0.32.11 allows remote attackers to execute arbitrary commands via shell metacharacters in the dtcpkg_directory parameter in a do_install action to dtc/.
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=637630
http://www.debian.org/security/2011/dsa-2365
http://git.gplhost.com/gitweb/?p=dtc.git%3Ba=commitdiff%3Bh=541d8457a6989a1a925bb866ed972a5f07c2de64