NGSSoftware Insight Security Research Advisory – Informix Dynamic Server is a database developed by IBM. During a security assessment of Informix it was discovered that any user can create a database and thus gain DBA privileges. On Informix public has the connect privilege; thus anyone with a login may connect. Public can also issue the create database command. When the database is created, the user that created the database is made a DBA of that database. A DBA can execute code as the informix user and trivially gain root privileges. Versions affected include 9.40.xC6 and earlier and 10.00.xC2, C1.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/49300/NISR02082006H.txt
Source: https://packetstormsecurity.com/files/49300/NISR02082006H.txt.html