Message Handling Issue in HyperLedger Fabric by HyperLedger
CVE-2021-43667

7.5HIGH

Key Information:

Vendor

Linux
Status
Fabric
Vendor
CVE Published:
18 November 2021

What is CVE-2021-43667?

A message handling vulnerability exists in HyperLedger Fabric versions v1.4.0, v2.0.0, and v2.1.0, where an attacker can send a specially crafted message with a nil payload to the 'forwardToLeader' method. Exploiting this flaw can cause any leader node to crash, disrupting the operation of the blockchain network. The developers of HyperLedger have acknowledged this issue and implemented a fix to mitigate potential risks.

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References

https://jira.hyperledger.org/browse/FAB-18529
x_refsource_MISC
https://github.com/hyperledger/fabric/pull/2844
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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