Use of a Broken or Risky Cryptographic Algorithm Affecting thunderbird package, versions <1:78.10.0-1
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Test your applications- Snyk ID SNYK-DEBIAN12-THUNDERBIRD-1560916
- published 13 Apr 2021
- disclosed 24 Jun 2021
Introduced: 13 Apr 2021
CVE-2021-23993 Open this link in a new tabHow to fix?
Upgrade Debian:12 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:12 relevant fixed versions and status.
An attacker may perform a DoS attack to prevent a user from sending encrypted email to a correspondent. If an attacker creates a crafted OpenPGP key with a subkey that has an invalid self signature, and the Thunderbird user imports the crafted key, then Thunderbird may try to use the invalid subkey, but the RNP library rejects it from being used, causing encryption to fail. This vulnerability affects Thunderbird < 78.9.1.