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Mozilla Foundation Security Advisory 2013-10

Title: Event manipulation in plugin handler to bypass same-origin policy
Impact: High
Announced: January 8, 2013
Reporter: Jesse Ruderman
Products: Firefox, Thunderbird, SeaMonkey

Fixed in: Firefox 18.0
  Firefox ESR 17.0.2
  Thunderbird 17.0.2
  Thunderbird ESR 17.0.2
  SeaMonkey 2.15

Description

Mozilla security researcher Jesse Ruderman reported that events in the plugin handler can be manipulated by web content to bypass same-origin policy (SOP) restrictions. This can allow for clickjacking on malicious web pages.

In general these flaws cannot be exploited through email in the Thunderbird and SeaMonkey products because scripting is disabled, but are potentially a risk in browser or browser-like contexts in those products.

References