Mozilla Foundation Security Advisory 2007-08

Mozilla Foundation Security Advisory 2007-08
Title: onUnload + document.write() memory corruption
Impact: Critical
Announced: February 25, 2007
Reporter: Michal Zalewski
Products: Firefox, SeaMonkey

Fixed in: Firefox 2.0.0.2
Firefox 1.5.0.10
SeaMonkey 1.0.8
Description
Michal Zalewski reported a memory corruption vulnerability in Firefox 2.0.0.1 involving mixing the onUnload event handler and self-modifying document.write() calls. This flaw was introduced in Firefox 2.0.0.1 and 1.5.0.9 and does not affect earlier versions; it is fixed in Firefox 2.0.0.2 and 1.5.0.10
Workaround
Disable JavaScript until a fixed version can be installed.
References
CVE-2007-1092
https://bugzilla.mozilla.org/show_bug.cgi?id=371321