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Improper Verification of Cryptographic Signature Affecting thunderbird package, versions <1:78.10.0-1

0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required

    Threat Intelligence

    EPSS 0.08% (36th percentile)
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NVD
4.3 medium
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Red Hat
4.3 medium
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SUSE
6.5 medium

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  • Snyk ID SNYK-DEBIAN11-THUNDERBIRD-1245137
  • published 13 Apr 2021
  • disclosed 24 Jun 2021
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Introduced: 13 Apr 2021

CVE-2021-23992 Open this link in a new tab
CWE-347 Open this link in a new tab

How to fix?

Upgrade Debian:11 thunderbird to version 1:78.10.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

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.