The changelog command in Apt before 1.0.9.2 allows local users to write to arbitrary files via a symlink attack on the changelog file.
https://exchange.xforce.ibmcloud.com/vulnerabilities/96951
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=763780
http://www.ubuntu.com/usn/USN-2370-1
http://www.securityfocus.com/bid/70310
http://www.debian.org/security/2014/dsa-3048
http://secunia.com/advisories/61768