cartridge_repository.rb in OpenShift Origin and Enterprise 1.2.8 through 2.1.1 allows remote attackers to execute arbitrary commands via shell metacharacters in a Source-Url ending with a (1) .tar.gz, (2) .zip, (3) .tgz, or (4) .tar file extension in a cartridge manifest file.
https://github.com/openshift/origin-server/pull/5521
https://bugzilla.redhat.com/show_bug.cgi?id=1110470
http://secunia.com/advisories/59298
http://rhn.redhat.com/errata/RHSA-2014-0764.html