Sites can bypass security checks on permissions to install lightweight themes by manipulating the baseURI property of the theme element. This could allow a malicious site to install a theme without user interaction which could contain offensive or embarrassing images. This vulnerability affects Thunderbird < 52.8, Thunderbird ESR < 52.8, Firefox < 60, and Firefox ESR < 52.8.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Debian_linux | Debian | 7.0 (including) | 7.0 (including) |
| Debian_linux | Debian | 8.0 (including) | 8.0 (including) |
| Debian_linux | Debian | 9.0 (including) | 9.0 (including) |
| Red Hat Enterprise Linux 6 | RedHat | firefox-0:52.8.0-1.el6_9 | * |
| Red Hat Enterprise Linux 6 | RedHat | thunderbird-0:52.8.0-2.el6_9 | * |
| Red Hat Enterprise Linux 7 | RedHat | firefox-0:52.8.0-1.el7_5 | * |
| Red Hat Enterprise Linux 7 | RedHat | thunderbird-0:52.8.0-1.el7_5 | * |
| Firefox | Ubuntu | artful | * |
| Firefox | Ubuntu | bionic | * |
| Firefox | Ubuntu | devel | * |
| Firefox | Ubuntu | trusty | * |
| Firefox | Ubuntu | upstream | * |
| Firefox | Ubuntu | xenial | * |
| Thunderbird | Ubuntu | artful | * |
| Thunderbird | Ubuntu | bionic | * |
| Thunderbird | Ubuntu | devel | * |
| Thunderbird | Ubuntu | trusty | * |
| Thunderbird | Ubuntu | upstream | * |
| Thunderbird | Ubuntu | xenial | * |