debdiff.pl in devscripts 2.10.x before 2.10.69 and 2.11.x before 2.11.4 allows remote attackers to obtain system information and execute arbitrary code via the file name in a (1) .dsc or (2) .changes file.
https://exchange.xforce.ibmcloud.com/vulnerabilities/73215
http://www.securityfocus.com/bid/52029
http://www.debian.org/security/2012/dsa-2409
http://ubuntu.com/usn/usn-1366-1
http://secunia.com/advisories/48039