The Samba server on Apple Mac OS X 10.3.9 and 10.4.10, when Windows file sharing is enabled, does not enforce disk quotas after dropping privileges, which allows remote authenticated users to use disk space in excess of quota.
https://exchange.xforce.ibmcloud.com/vulnerabilities/35738
http://www.vupen.com/english/advisories/2007/2732
http://www.securityfocus.com/bid/25159
http://secunia.com/advisories/26235
http://lists.apple.com/archives/security-announce//2007/Jul/msg00004.html