The creating record functionality in Extension table administration library (feuser_adminLib.inc) in TYPO3 4.5.0 through 4.5.31, 4.7.0 through 4.7.16, and 6.0.0 through 6.0.11 allows remote attackers to write to arbitrary fields in the configuration database table via crafted links, aka "Mass Assignment."
http://www.debian.org/security/2014/dsa-2834
http://typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2013-004/