Mozilla Foundation Security Advisory 2012-82
top object and location property accessible by plugins
- Announced
- October 9, 2012
- Reporter
- Mariusz Mlynski
- Impact
- High
- Products
- Firefox, Firefox ESR, SeaMonkey, Thunderbird, Thunderbird ESR
- Fixed in
-
- Firefox 16
- Firefox ESR 10.0.8
- SeaMonkey 2.13
- Thunderbird 16
- Thunderbird ESR 10.0.8
Description
Security researcher Mariusz Mlynski reported that the
location property can be accessed by binary plugins through
top.location and top can be shadowed by
Object.defineProperty as well. This can allow for possible
cross-site scripting (XSS) attacks through plugins.
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.