Rational ClearQuest is an enterprise workflow automation tool. It functions as a bug tracking tool and can act as a CRM or process tracker.
The ClearQuest web client installs ActiveX modules on the client system. These modules are usable by any website that the user visits. The RegisterSchemaRepoFromFileByDbSe method of the CLEARQUEST.SESSION ActiveX object does not properly sanitize its parameters. Passing an overly long parameter will result in an exploitable heap overflow condition.
Upgrade to version 126.96.36.199, 188.8.131.52, or 184.108.40.206, or higher.
This exploit has been tested against IBM Rational ClearQuest 7.1.2 on Windows XP SP3 English (DEP OptIn) using Internet Explorer 7.