APT before 1.0.4 does not properly validate source packages, which allows man-in-the-middle attackers to download and install Trojan horse packages by removing the Release signature.Referenceshttp://secunia.com/advisories/58843http://secunia.com/advisories/59358http://www.debian.org/security/2014/dsa-2958https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=749795http://www.ubuntu.com/usn/USN-2246-1
