Mozilla Foundation Security Advisory 2012-23
Invalid frees causes heap corruption in gfxImageSurface
- Announced
- April 24, 2012
- Reporter
- Atte Kettunen
- Impact
- Critical
- Products
- Firefox, Firefox ESR, SeaMonkey, Thunderbird, Thunderbird ESR
- Fixed in
-
- Firefox 12
- Firefox ESR 10.0.4
- SeaMonkey 2.9
- Thunderbird 12
- Thunderbird ESR 10.0.4
Description
Using the Address Sanitizer tool, security researcher Atte Kettunen from OUSPG found a heap corruption in gfxImageSurface which allows for invalid frees and possible remote code execution. This happens due to float error, resulting from graphics values being passed through different number systems.