Secunia Security Advisory – Multiple vulnerabilities in GRASS can be exploited by malicious, local users to perform certain actions on a vulnerable system with escalated privileges. The vulnerabilities are caused due to multiple scripts creating temporary files insecurely. This can be exploited via symlink attacks to overwrite arbitrary files with the privileges of the user running a vulnerable script.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/35591/sa13693.txt
Source: https://packetstormsecurity.com/files/35591/Secunia-Security-Advisory-13693.html