Debian Security Advisory 1652-1 – Several vulnerabilities have been discovered in the interpreter for the Ruby language, which may lead to denial of service and other security problems.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/70844/dsa-1652-1.txt
Source: https://packetstormsecurity.com/files/70844/Debian-Linux-Security-Advisory-1652-1.html