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Mozilla Foundation Security Advisory 2006-76

Title: XSS using outer window's Function object
Impact: High
Announced: December 19, 2006
Reporter: moz_bug_r_a4
Products: Firefox 2.0

Fixed in: Firefox 2.0.0.1

Description

moz_bug_r_a4 demonstrated that the Function prototype regression described in bug 355161 could be exploited to bypass the protections against cross site script (XSS) injection, which could be used to steal credentials or sensitive data from arbitrary sites or perform destructive actions on behalf of a logged-in user.

This vulnerability is a regression introduced in Firefox 2.0, Firefox 1.5 releases are unaffected.

Workaround

Disable JavaScript until the upgrade is installed.

References