CVE-2021-23992
Medium
Description
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.
SeverityMedium
CVSS4.3
Exploit probability—
Product
Mozilla Thunderbird
PublishedJun 24, 2021
First seenJun 24, 2021
How to fix
Update
- mozilla thunderbird78.9.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla thunderbird | v < 78.9.1 | 78.9.1 |
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