Security Advisory

CVE-2021-23991

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2021-06-24 13:27:10

Last updated 2024-08-03 19:14:10

Assigner mozilla

CVSS score not scored

State PUBLISHED

Description

If a Thunderbird user has previously imported Alice's OpenPGP key, and Alice has extended the validity period of her key, but Alice's updated key has not yet been imported, an attacker may send an email containing a crafted version of Alice's key with an invalid subkey, Thunderbird might subsequently attempt to use the invalid subkey, and will fail to send encrypted email to Alice. This vulnerability affects Thunderbird < 78.9.1.

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