CVE-2021-23991

Source
https://nvd.nist.gov/vuln/detail/CVE-2021-23991
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-23991.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-23991
Downstream
Related
Published
2021-06-24T14:15:09Z
Modified
2025-08-09T20:01:26Z
Severity
  • 6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages