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Mozilla Foundation Security Advisory 2006-69
Title: CSS cursor image buffer overflow (Windows only)
Announced: December 19, 2006
Reporter: Frederik Reiss
Products: Firefox, Thunderbird, SeaMonkey
Fixed in: Firefox 220.127.116.11
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
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