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Mozilla Foundation Security Advisory 2013-68

Document URI misrepresentation and masquerading

Announced
August 6, 2013
Reporter
moz_bug_r_a4
Impact
High
Products
Firefox, Firefox ESR, SeaMonkey, Thunderbird, Thunderbird ESR
Fixed in
  • Firefox 23
  • Firefox ESR 17.0.8
  • SeaMonkey 2.20
  • Thunderbird 17.0.8
  • Thunderbird ESR 17.0.8

Description

Mozilla security researcher moz_bug_r_a4 reported that through an interaction of frames and browser history it was possible to make the browser believe attacker-supplied content came from the location of a previous page in browser history. This allows for cross-site scripting (XSS) attacks by loading scripts from a misrepresented malicious site through relative locations and the potential access of stored credentials of a spoofed site.

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