Mozilla Foundation Security Advisory 2008-40
Title: Forced mouse drag
Announced: September 23, 2008
Reporter: Paul Nickerson, Liu Die Yu
Products: Firefox, SeaMonkey
Fixed in: Firefox 3.0.2
Mozilla developer Paul Nickerson reported a variant of a click-hijacking vulnerability discovered in Internet Explorer by Liu Die Yu. The vulnerability allowed an attacker to move the content window while the mouse was being clicked, causing an item to be dragged rather than clicked-on. This issue could potentially be used to force a user to download a file or perform other drag-and-drop actions.
- open Options/Preferences dialog
- go to the "Content" tab
- UN-check the "Move or resize existing windows" box.