The be_user_creation task in TYPO3 4.2.x before 4.2.15 and 4.3.x before 4.3.7 allows remote authenticated users to gain privileges via a crafted POST request that creates a user account with arbitrary group memberships.Referenceshttp://www.securityfocus.com/bid/43786http://www.debian.org/security/2010/dsa-2121http://typo3.org/teams/security/security-bulletins/typo3-sa-2010-020/
