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Firefox Privacy Notice

Mozilla Foundation Security Advisory 2015-26

UI Tour whitelisted sites in background tab can spoof foreground tabs

Announced
February 24, 2015
Reporter
Matthew Noorenberghe
Impact
Moderate
Products
Firefox
Fixed in
  • Firefox 36

Description

Mozilla developer Matthew Noorenberghe reported that whitelisted Mozilla domains could make UITour API calls while the UI Tour pages for Firefox are present in background tabs. If one of these Mozilla domains was compromised and open in another tab, an attacker could then use that tab to engage in spoofing and clickjacking in any foreground tab.

References