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CVE-2021-23992

Public on 2021-05-20
Modified on 2021-05-24
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.

Severity
Medium
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CVSS v3 Base Score
4.3
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Core thunderbird 2021-05-20 17:05 ALAS2-2021-1644

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
NVD CVSSv2 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N
NVD CVSSv3 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

References

Red Hat: CVE-2021-23992 Mitre: CVE-2021-23992 FAQs regarding Amazon Linux ALAS/CVE Severity