The error function in Error.cc in poppler before 0.21.4 allows remote attackers to execute arbitrary commands via a PDF containing an escape sequence for a terminal emulator.
https://bugzilla.redhat.com/show_bug.cgi?id=789936
http://lists.opensuse.org/opensuse-updates/2013-08/msg00049.html
http://cgit.freedesktop.org/poppler/poppler/commit/NEWS?id=2bc48d5369f1dbecfc4db2878f33bdeb80d8d90f
http://cgit.freedesktop.org/poppler/poppler/commit/?id=71bad47ed6a36d825b0d08992c8db56845c71e40