Debian Security Advisory 1878-1 – Raphael Geissert discovered that uscan, a program to check for availability of new source code versions which is part of the devscripts package, runs Perl code downloaded from potentially untrusted sources to implement its URL and version mangling functionality. This update addresses this issue by reimplementing the relevant Perl operators without relying on the Perl interpreter, trying to preserve backwards compatibility as much as possible.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/80939/dsa-1878-1.txt
Source: https://packetstormsecurity.com/files/80939/Debian-Linux-Security-Advisory-1878-1.html