lib/sup/message_chunks.rb in Sup before 0.13.2.1 and 0.14.x before 0.14.1.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the content_type of an email attachment.
lists.fedoraproject.org/pipermail/package-announce/2015-September/165917.html
rubyforge.org/pipermail/sup-talk/2013-October/004996.html
seclists.org/fulldisclosure/2013/Oct/272
secunia.com/advisories/55294
secunia.com/advisories/55400
www.debian.org/security/2012/dsa-2805
www.openwall.com/lists/oss-security/2013/10/30/2
github.com/sup-heliotrope/sup/commit/ca0302e0c716682d2de22e9136400c704cc93e42