CVE-2021-43529

Published: Feb 16, 2023Modified: Mar 19, 2025

9.8

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability: 3.9 / Impact: 5.9

Source: NVD

Description

Thunderbird versions prior to 91.3.0 are vulnerable to the heap overflow described in CVE-2021-43527 when processing S/MIME messages. Thunderbird versions 91.3.0 and later will not call the vulnerable code when processing S/MIME messages that contain certificates with DER-encoded DSA or RSA-PSS signatures.

Affected (1)

Products: Mozilla: Thunderbird

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Mozilla Thunderbird	Before 91.3.0

Related CWEs

Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

References (2)

https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2021-43529

Source: security@mozilla.org

Issue Tracking

https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2021-43529

Source: af854a3a-2127-422b-91ae-364da2661108

Issue Tracking

Timeline

No history available yet.