Debian Security Advisory 1618-1 – Several vulnerabilities have been discovered in the interpreter for the Ruby language, which may lead to denial of service or the execution of arbitrary code.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/68545/dsa-1618-1.txt
Source: https://packetstormsecurity.com/files/68545/Debian-Linux-Security-Advisory-1618-1.html