The GenericInterface in OTRS Help Desk 3.2.x before 3.2.17, 3.3.x before 3.3.11, and 4.0.x before 4.0.3 allows remote authenticated users to access and modify arbitrary tickets via unspecified vectors.
https://www.otrs.com/security-advisory-2014-06-incomplete-access-control/
http://www.mandriva.com/security/advisories?name=MDVSA-2015:043
http://secunia.com/advisories/62662
http://secunia.com/advisories/62188