reportbug before 6.4.4+deb7u1 and 6.5.x before 6.5.0+nmu1 allows remote attackers to execute arbitrary commands via vectors related to compare_versions and reportbug/checkversions.py.
https://exchange.xforce.ibmcloud.com/vulnerabilities/95149
https://bugs.launchpad.net/ubuntu/+source/reportbug/+bug/1353046
http://www.securityfocus.com/bid/69055