Certificate Assistant in Apple Mac OS X 10.5.6 allows local users to overwrite arbitrary files via unknown vectors related to an “insecure file operation” on a temporary file.
lists.apple.com/archives/security-announce/2009/Feb/msg00000.html
osvdb.org/51979
secunia.com/advisories/33937
securitytracker.com/alerts/2009/Feb/1021720.html
support.apple.com/kb/HT3438
www.securityfocus.com/bid/33759
www.vupen.com/english/advisories/2009/0422
exchange.xforce.ibmcloud.com/vulnerabilities/48715