OpenPKG Security Advisory OpenPKG-SA-2006.016 – Multiple unspecified vulnerabilities in the Ruby programming language allow remote attackers to bypass “safe level” checks via unspecified vectors involving the “alias” function, directory operations and regular expressions.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/48761/OpenPKG-SA-2006.016.txt
Source: https://packetstormsecurity.com/files/48761/OpenPKG-Security-Advisory-2006.16.html