Thunderbird did not check if the user ID associated with an OpenPGP key has a valid self signature. An attacker may create a crafted version of an OpenPGP key, by either replacing the original user ID, or by adding another user ID. If Thunderbird imports and accepts the crafted key, the Thunderbird user may falsely conclude that the false user ID belongs to the correspondent. This vulnerability affects Thunderbird < 78.9.1.
Weakness
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Thunderbird | Mozilla | * | 78.9.1 (excluding) |
| Red Hat Enterprise Linux 7 | RedHat | thunderbird-0:78.9.1-1.el7_9 | * |
| Red Hat Enterprise Linux 8 | RedHat | thunderbird-0:78.9.1-1.el8_3 | * |
| Red Hat Enterprise Linux 8.1 Extended Update Support | RedHat | thunderbird-0:78.9.1-1.el8_1 | * |
| Red Hat Enterprise Linux 8.2 Extended Update Support | RedHat | thunderbird-0:78.9.1-1.el8_2 | * |
| Thunderbird | Ubuntu | bionic | * |
| Thunderbird | Ubuntu | devel | * |
| Thunderbird | Ubuntu | focal | * |
| Thunderbird | Ubuntu | groovy | * |
| Thunderbird | Ubuntu | hirsute | * |
| Thunderbird | Ubuntu | impish | * |
| Thunderbird | Ubuntu | jammy | * |
| Thunderbird | Ubuntu | kinetic | * |
| Thunderbird | Ubuntu | lunar | * |
| Thunderbird | Ubuntu | trusty | * |
| Thunderbird | Ubuntu | upstream | * |
| Thunderbird | Ubuntu | xenial | * |