CVE-2021-43667

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability has been detected in HyperLedger Fabric v1.4.0, v2.0.0, v2.1.0. This bug can be leveraged by constructing a message whose payload is nil and sending this message with the method 'forwardToLeader'. This bug has been admitted and fixed by the developers of Fabric. If leveraged, any leader node will crash.

Se ha detectado una vulnerabilidad en HyperLedger Fabric versiones v1.4.0, v2.0.0, v2.1.0. Este bug puede ser aprovechado al construir un mensaje cuya carga útil es nula y enviando este mensaje con el método "forwardToLeader". Este error ha sido admitido y corregido por los desarrolladores de Fabric. Si es aprovechado, cualquier nodo líder será bloqueado.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-11-15 CVE Reserved
2021-11-18 CVE Published
2024-08-03 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC
https://jira.hyperledger.org/browse/FAB-18529	2024-08-04

URL	Date	SRC
https://github.com/hyperledger/fabric/pull/2844	2021-11-23

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linuxfoundation Search vendor "Linuxfoundation"		Fabric Search vendor "Linuxfoundation" for product "Fabric"				1.4.0 Search vendor "Linuxfoundation" for product "Fabric" and version "1.4.0"		-		Affected
Linuxfoundation Search vendor "Linuxfoundation"		Fabric Search vendor "Linuxfoundation" for product "Fabric"				2.0.0 Search vendor "Linuxfoundation" for product "Fabric" and version "2.0.0"		-		Affected
Linuxfoundation Search vendor "Linuxfoundation"		Fabric Search vendor "Linuxfoundation" for product "Fabric"				2.1.0 Search vendor "Linuxfoundation" for product "Fabric" and version "2.1.0"		-		Affected