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Mozilla Foundation Security Advisory 2012-95

Title: Javascript: URLs run in privileged context on New Tab page
Impact: Moderate
Announced: November 20, 2012
Products: Firefox

Fixed in: Firefox 17.0


Security researcher reported that if a javascript: URL is selected from the list of Firefox "new tab" page, the script will inherit the privileges of the privileged "new tab" page. This allows for the execution of locally installed programs if a user can be convinced to save a bookmark of a malicious javascript: URL.