Use-after-free during XML transformations
- March 8, 2016
- Nicolas Grégoire
- Firefox, Firefox ESR, Thunderbird
- Fixed in
- Firefox 45
- Firefox ESR 38.7
- Thunderbird 38.7
- Thunderbird 45
Security researcher Nicolas Grégoire used the Address Sanitizer to find a use-after-free during XML transformation operations. This results in a potentially exploitable crash triggerable by web content.
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.