CVE-2021-23993 (GCVE-0-2021-23993)

Vulnerability from cvelistv5 – Published: 2021-06-24 13:26 – Updated: 2024-08-03 19:14
VLAI
Summary
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.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CWE
  • Inability to send encrypted OpenPGP email after importing a crafted OpenPGP key
Assigner
mozilla CNA under the mitre root
CNA scorecard E 38/100 over 504 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Mozilla Thunderbird Affected: unspecified , < 78.9.1 (custom)
guessed Create a notification for this product.
Show details on NVD website
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