Mozilla

Mozilla Foundation Security Advisory 2013-09

Compartment mismatch with quickstubs returned values

Announced
January 8, 2013
Reporter
Boris Zbarsky
Impact
High
Products
Firefox, Firefox ESR, SeaMonkey, Thunderbird, Thunderbird ESR
Fixed in
  • Firefox 18
  • Firefox ESR 10.0.12
  • Firefox ESR 17.0.2
  • SeaMonkey 2.15
  • Thunderbird 17.0.2
  • Thunderbird ESR 10.0.12
  • Thunderbird ESR 17.0.2

Description

Mozilla developer Boris Zbarsky reported reported a problem where jsval-returning quickstubs fail to wrap their return values, causing a compartment mismatch. This mismatch can cause garbage collection to occur incorrectly and lead to a potentially exploitable crash.

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