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.
References
Link Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1666360 Issue Tracking Permissions Required Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-13/ Release Notes Vendor Advisory
History

No history.

cve-icon MITRE Information

Status: PUBLISHED

Assigner: mozilla

Published: 2021-06-24T13:26:39

Updated: 2021-06-24T13:26:39

Reserved: 2021-01-13T00:00:00


Link: CVE-2021-23993

JSON object: View

cve-icon NVD Information

Status : Analyzed

Published: 2021-06-24T14:15:09.257

Modified: 2023-08-08T14:22:24.967


Link: CVE-2021-23993

JSON object: View

cve-icon Redhat Information

No data.

CWE