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


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.08% (38th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-THUNDERBIRD-1245135
  • published13 Apr 2021
  • disclosed24 Jun 2021

Introduced: 13 Apr 2021

CVE-2021-23992  (opens in a new tab)
CWE-347  (opens in a new tab)

How to fix?

Upgrade Debian:unstable 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:unstable 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.

CVSS Scores

version 3.1