The Microsoft HTML Help ActiveX control fails to properly validate input, which could allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.
The HTML Help Control (HHCtrl Object) is a Windows ActiveX control that provides the ability to view HTML help files. The HHCtrl Object is included in the file hhctrl.ocx and provides the ProgID (Programmatic Identifier) of Internet.HHCtrl. The HHCtrl Object fails to properly validate input.
By convincing a user to view a specially crafted HTML document (e.g., a web page or an HTML email message or attachment), an attacker may be able to execute arbitrary code with the privileges of the user.
Apply an update
This issue is addressed in Microsoft Security Bulletin MS07-008. This update provides a newer version of the HHCtrl Object.
This vulnerability was reported by Microsoft, who in turn credit HD Moore of BreakingPoint Systems.
This document was written by Will Dormann.
|Date First Published:||2007-02-13|
|Date Last Updated:||2007-02-23 13:42 UTC|