A compromised child process could have injected XBL Bindings into privileged CSS rules, resulting in arbitrary code execution and a sandbox escape. This vulnerability affects Firefox < 70.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firefox | Mozilla | * | 70.0 (excluding) |
| Firefox | Ubuntu | bionic | * |
| Firefox | Ubuntu | trusty | * |
| Firefox | Ubuntu | xenial | * |
| Thunderbird | Ubuntu | bionic | * |
| Thunderbird | Ubuntu | trusty | * |
| Thunderbird | Ubuntu | xenial | * |