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CVE-2021-43669

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Date: November 18, 2021

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.

Language: Go

Severity Score

Related Resources (6)

https://nvd.nist.gov/vuln/detail/CVE-2021-43669
https://github.com/hyperledger/fabric
https://github.com/hyperledger/fabric/pull/2828
https://github.com/hyperledger/fabric/releases/tag/v2.4.0-beta
https://jira.hyperledger.org/browse/FAB-18528
https://www.mend.io/vulnerability-database/CVE-2021-43669

Severity Score

Weakness Type (CWE)

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

CWE-444

Top Fix

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Upgrade Version

Upgrade to version github.com/hyperledger/fabric - v2.4.0

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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