A local attacker can trick the Mozilla Maintenance Service into applying an unsigned update file by pointing the service at an update file on a malicious SMB server. The update file can be replaced after the signature check, before the use, because the write-lock requested by the service does not work on a SMB server.
Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10.
Name | Vendor | Start Version | End Version |
---|---|---|---|
Firefox | Mozilla | * | 112.0 (excluding) |
Firefox_esr | Mozilla | * | 102.10 (excluding) |
Thunderbird | Mozilla | * | 102.10 (excluding) |
Firefox | Ubuntu | trusty | * |
Firefox | Ubuntu | xenial | * |
Mozjs38 | Ubuntu | bionic | * |
Mozjs38 | Ubuntu | esm-apps/bionic | * |
Mozjs38 | Ubuntu | upstream | * |
Mozjs52 | Ubuntu | bionic | * |
Mozjs52 | Ubuntu | esm-apps/focal | * |
Mozjs52 | Ubuntu | esm-infra/bionic | * |
Mozjs52 | Ubuntu | focal | * |
Mozjs52 | Ubuntu | upstream | * |
Mozjs68 | Ubuntu | focal | * |
Mozjs68 | Ubuntu | upstream | * |
Mozjs78 | Ubuntu | esm-apps/jammy | * |
Mozjs78 | Ubuntu | jammy | * |
Mozjs78 | Ubuntu | kinetic | * |
Mozjs78 | Ubuntu | lunar | * |
Mozjs78 | Ubuntu | upstream | * |
Mozjs91 | Ubuntu | jammy | * |
Mozjs91 | Ubuntu | upstream | * |
Thunderbird | Ubuntu | trusty | * |
Thunderbird | Ubuntu | xenial | * |