CVE-2021-43529

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

History

21 Nov 2024, 06:29

Type	Values Removed	Values Added
References	~~() https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2021-43529 - Issue Tracking~~	() https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2021-43529 - Issue Tracking
Summary		(es) Las versiones de Thunderbird anteriores a la 91.3.0 son vulnerables al desbordamiento del almacenamiento dinámico descrito en CVE-2021-43527 al procesar mensajes S/MIME. Las versiones 91.3.0 y posteriores de Thunderbird no llamarán al código vulnerable al procesar mensajes S/MIME que contengan certificados con firmas DSA o RSA-PSS codificadas en DER.

28 Feb 2023, 13:55

Type	Values Removed	Values Added
CPE		cpe:2.3:a:mozilla:thunderbird::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.8
CWE		CWE-787
References	~~(MISC) https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2021-43529 -~~	(MISC) https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2021-43529 - Issue Tracking

17 Feb 2023, 12:52

Type	Values Removed	Values Added
New CVE

Information

Published : 2023-02-16 22:15

Updated : 2025-03-19 15:15

NVD link : CVE-2021-43529

Mitre link : CVE-2021-43529

CVE.ORG link : CVE-2021-43529

JSON object : View

Products Affected

mozilla

thunderbird

CWE

CWE-787

Out-of-bounds Write

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