Mozilla Foundation Security Advisory 2015-145
Underflow through code inspection
- December 15, 2015
- Ronald Crane
- Firefox, Firefox ESR, Firefox OS, Thunderbird
- Fixed in
- Firefox 43
- Firefox ESR 38.5
- Firefox OS 2.5
- Thunderbird 38.5
Security researcher Ronald Crane reported an underflow found through code inspection. This does not all have a clear mechanism to be exploited through web content but could be vulnerable if a means can be found to trigger it.
In general this flaw cannot be exploited through email in the Thunderbird product because scripting is disabled, but is potentially a risk in browser or browser-like contexts.