Mail::Audit module in libmail-audit-perl 2.1-5, when logging is enabled without a default log file specified, uses predictable log filenames, which allows local users to overwrite arbitrary files via a symlink attack on the [PID]-audit.log temporary file.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24380
http://www.vupen.com/english/advisories/2006/0378
http://www.securityfocus.com/bid/16434
http://www.debian.org/security/2006/dsa-960
http://secunia.com/advisories/18656