CVE-2021-43667 — HIGH (7.5)

Vulnerability 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.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Linuxfoundation	Fabric	1.4.0

Related Weaknesses (CWE)

CWE-476

References

https://github.com/hyperledger/fabric/pull/2844PatchThird Party Advisory
https://jira.hyperledger.org/browse/FAB-18529ExploitVendor Advisory
https://github.com/hyperledger/fabric/pull/2844PatchThird Party Advisory
https://jira.hyperledger.org/browse/FAB-18529ExploitVendor Advisory

FAQ

What is CVE-2021-43667?

CVE-2021-43667 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 'forwa...

How severe is CVE-2021-43667?

CVE-2021-43667 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-43667?

Check the references section above for vendor advisories and patch information. Affected products include: Linuxfoundation Fabric.