What is the severity of CVE-2021-43669?

CVE-2021-43669 is considered a high severity vulnerability due to its potential to disrupt orderer nodes in HyperLedger Fabric.

How do I fix CVE-2021-43669?

To fix CVE-2021-43669, upgrade to the latest patched version of HyperLedger Fabric that addresses this vulnerability.

Which versions of HyperLedger Fabric are affected by CVE-2021-43669?

CVE-2021-43669 affects HyperLedger Fabric versions 1.4.0, 2.0.0, 2.0.1, and 2.3.0.

What is the nature of the vulnerability in CVE-2021-43669?

CVE-2021-43669 is a denial-of-service vulnerability that can be exploited by sending invalid messages to the Order interface.

Has CVE-2021-43669 been acknowledged by the developers?

Yes, the developers have acknowledged and fixed CVE-2021-43669 in subsequent releases of HyperLedger Fabric.

Vulnerability/
CVE-2021-43669

high

7.5

CWE

444

18/11/2021

21/11/2024

CVE-2021-43669

First published: Thu Nov 18 2021(Updated: )

A vulnerability has been detected in HyperLedger Fabric v1.4.0, v2.0.0, v2.0.1, v2.3.0. It can easily break down as many orderers as the attacker wants. This bug can be leveraged by constructing a message whose header is invalid to the interface Order. This bug has been admitted and fixed by the developers of Fabric.

Credit: cve@mitre.org cve@mitre.org

Affected Software	Affected Version	How to fix
Hyperledger Fabric	=1.4.0
Hyperledger Fabric	=2.0.0
Hyperledger Fabric	=2.0.1
Hyperledger Fabric	=2.3.0

Remedy

https://github.com/hyperledger/fabric/pull/2828

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-43669?
CVE-2021-43669 is considered a high severity vulnerability due to its potential to disrupt orderer nodes in HyperLedger Fabric.
How do I fix CVE-2021-43669?
To fix CVE-2021-43669, upgrade to the latest patched version of HyperLedger Fabric that addresses this vulnerability.
Which versions of HyperLedger Fabric are affected by CVE-2021-43669?
CVE-2021-43669 affects HyperLedger Fabric versions 1.4.0, 2.0.0, 2.0.1, and 2.3.0.
What is the nature of the vulnerability in CVE-2021-43669?
CVE-2021-43669 is a denial-of-service vulnerability that can be exploited by sending invalid messages to the Order interface.
Has CVE-2021-43669 been acknowledged by the developers?
Yes, the developers have acknowledged and fixed CVE-2021-43669 in subsequent releases of HyperLedger Fabric.

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collector/mitre-cve
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agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
collector/nvd-api
source/NVD
agent/software-canonical-lookup
vendor/linuxfoundation
canonical/hyperledger fabric
version/hyperledger fabric/1.4.0
version/hyperledger fabric/2.0.0
version/hyperledger fabric/2.0.1
version/hyperledger fabric/2.3.0

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