Mozilla Foundation Security Advisory 2006-69
CSS cursor image buffer overflow (Windows only)
- Announced
- December 19, 2006
- Reporter
- Frederik Reiss
- Impact
- Critical
- Products
- Firefox, SeaMonkey, Thunderbird
- Fixed in
-
- Firefox 1.5.0.9
- Firefox 2.0.0.1
- SeaMonkey 1.0.7
- Thunderbird 1.5.0.9
Description
Frederik Reiss reported a crash when using the CSS cursor property to set the cursor to certain images on Windows. A miscalculated size during conversion of the image to a Windows bitmap can result in a heap buffer overflow which could be used to compromise the victim's computer.
This flaw affects both Firefox 2 and Firefox 1.5 but not the earlier Firefox 1.0 or Mozilla Suite
Workaround
Upgrade to a fixed version.