WebExtensions bundled with embedded experiments were not correctly checked for proper authorization. This allowed a malicious WebExtension to gain full browser permissions. This vulnerability affects Firefox ESR < 60.1 and Firefox < 61.
| Software | From | Fixed in |
|---|---|---|
| mozilla / firefox | - | 61.0 |
| canonical / ubuntu_linux | 16.04 | 16.04.x |
| canonical / ubuntu_linux | 14.04 | 14.04.x |
| canonical / ubuntu_linux | 17.10 | 17.10.x |
| canonical / ubuntu_linux | 18.04 | 18.04.x |
| mozilla / firefox | - | 60.1.0 |