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CVE-2021-23993
Published: Jun 24, 2021
Modified: Aug 3, 2024
PUBLISHED
Description
An attacker may perform a DoS attack to prevent a user from sending encrypted email to a correspondent. If an attacker creates a crafted OpenPGP key with a subkey that has an invalid self signature, and the Thunderbird user imports the crafted key, then Thunderbird may try to use the invalid subkey, but the RNP library rejects it from being used, causing encryption to fail. This vulnerability affects Thunderbird < 78.9.1.
| Vendor | Product | Versions |
|---|---|---|
Mozilla | Thunderbird | affected unspecified - < 78.9.1 |
References
https://www.mozilla.org/security/advisories/mfsa2021-13/
x_refsource_MISC
https://bugzilla.mozilla.org/show_bug.cgi?id=1666360
x_refsource_MISC
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