dscl in DS Tools in Apple Mac OS X 10.4.11 and 10.5.6 requires that passwords must be provided as command line arguments, which allows local users to gain privileges by listing process information.
lists.apple.com/archives/security-announce/2009/Feb/msg00000.html
secunia.com/advisories/33937
securitytracker.com/alerts/2009/Feb/1021722.html
support.apple.com/kb/HT3438
www.securityfocus.com/bid/33759
www.securityfocus.com/bid/33815
www.vupen.com/english/advisories/2009/0422
exchange.xforce.ibmcloud.com/vulnerabilities/48717