arc 5.21j and earlier allows local users to overwrite arbitrary files via a symlink attack on temporary files, a different type of vulnerability than CVE-2005-2945.
http://www.debian.org/security/2005/dsa-843
http://securityreason.com/securityalert/11
http://secunia.com/advisories/17068
http://secunia.com/advisories/16805
http://marc.info/?l=bugtraq&m=112689596714383&w=2
http://archives.neohapsis.com/archives/fulldisclosure/2005-09/0535.html