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CVE-2021-43667

HIGH
7.5
CVSS Score
Published: November 18, 2021 at 03:05 PM UTC
Updated: June 17, 2026 at 04:11 AM UTC
1 product affected across 1 vendorFabric

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Severity
HIGH7.5
Exploit prediction
EPSS 1%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/hyperledger/fabric/pull/2844
x_refsource_MISCExploitVendor Advisory
Source: [email protected]
https://jira.hyperledger.org/browse/FAB-18529

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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