FileSystemBytecodeCache in Jinja2 2.7.2 does not properly create temporary directories, which allows local users to gain privileges by pre-creating a temporary directory with a user's uid. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-1402.
https://github.com/mitsuhiko/jinja2/pull/296
https://github.com/mitsuhiko/jinja2/pull/292
https://bugzilla.redhat.com/show_bug.cgi?id=1051421
http://www.gentoo.org/security/en/glsa/glsa-201408-13.xml
http://secunia.com/advisories/60738