Mozilla Foundation Security Advisory 2013-09
Title: Compartment mismatch with quickstubs returned values
Announced: January 8, 2013
Reporter: Boris Zbarsky
Products: Firefox, Thunderbird, SeaMonkey
Fixed in: Firefox 18.0
Firefox ESR 10.0.12
Firefox ESR 17.0.2
Thunderbird ESR 10.0.12
Thunderbird ESR 17.0.2
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.