Memory corruption in libjar through zip files
- November 3, 2015
- Gustavo Grieco
- Firefox, Firefox ESR, Thunderbird
- Fixed in
- Firefox 42
- Firefox ESR 38.4
- Thunderbird 38.4
Security researcher Gustavo Grieco reported a buffer underflow in
libjar triggered through a maliciously crafted ZIP format file. This results
in a potentially exploitable crash.
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.