Improper validation of integrity check value in Fabric - CVE-2023-46132
Published: November 14, 2023 / Updated: April 23, 2026
Vulnerability identifier: #VU127236
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-46132
CWE-ID: CWE-354
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Fabric
Fabric
Software vendor:
hyperledger
hyperledger
Description
The vulnerability allows a remote user to cause a state fork and alter ledger state.
The vulnerability exists due to improper integrity check in block transaction hashing when processing cross-linked blocks. A remote user can craft a cross-linked block to cause a state fork and alter ledger state.
In Fabric v1 and v2, exploitation can occur when a peer replicates a block from a malicious peer. In Fabric v3 preview, a malicious orderer can also cause the issue.
Remediation
Install security update from vendor's website.