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Mozilla Foundation Security Advisory 2006-28
Title: Security check of js_ValueToFunctionObject() can be circumvented
Date: April 13, 2006
Products: Firefox, Thunderbird, SeaMonkey
Fixed in: Firefox 188.8.131.52
The security check in js_ValueToFunctionObject() can be bypassed by clever use of setTimeout() and the new Firefox 1.5 array method ForEach. shutdown demonstrated how to leverage this into a privilege escalation vulnerability that would allow the installation of malware.
This vulnerability was introduced during Firefox 1.5 development, Firefox 1.0 and Mozilla Suite 1.7 are not affected.
Exploit code and details embargoed during the active update period.