Debian Security Advisory 1157-1 – Several vulnerabilities have been discovered in the interpreter for the Ruby language, which may lead to the bypass of security restrictions or denial of service.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/49489/dsa-1157-1.txt
Source: https://packetstormsecurity.com/files/49489/Debian-Linux-Security-Advisory-1157-1.html