CVE-2023-46132 : Vulnerability Insights and Analysis
Learn about CVE-2023-46132, a high-severity vulnerability in Hyperledger Fabric allowing adversaries to manipulate transactions by cross-linking, impacting transaction processing by peers.
A detailed insight into the crosslinking transaction attack vulnerability identified in Hyperledger Fabric.
Understanding CVE-2023-46132
In this section, we will delve into the specifics of CVE-2023-46132 related to Hyperledger Fabric.
What is CVE-2023-46132?
The CVE-2023-46132 vulnerability pertains to a crosslinking transaction attack in Hyperledger Fabric, an open-source permissioned distributed ledger framework. This vulnerability allows an adversary to manipulate transactions by cross-linking them, resulting in inconsistencies in how peers parse the transactions.
The Impact of CVE-2023-46132
The impact of CVE-2023-46132 is deemed high due to its potential to alter the processing of transactions by peers within the fabric, leading to deviations in the world state of different peers.
Technical Details of CVE-2023-46132
Let's explore the technical aspects of CVE-2023-46132 in Hyperledger Fabric.
Vulnerability Description
The vulnerability arises from the improper hashing mechanism used by Fabric, enabling the creation of cross-linked blocks that modify transaction processing without detection.
Affected Systems and Versions
Hyperledger Fabric versions >= 1.0.0 and < 2.2.14, as well as versions >= 2.3.0 and < 2.5.5, are impacted by this vulnerability.
Exploitation Mechanism
By crafting cross-linked blocks, attackers can manipulate transactions within a block without altering its hash, allowing them to influence transaction processing.
Mitigation and Prevention
Discover the steps to mitigate and prevent exploitation of CVE-2023-46132 in Hyperledger Fabric.
Immediate Steps to Take
Users are strongly advised to upgrade to versions 2.2.14 or 2.5.5, where additional validations to detect cross-linking issues have been introduced.
Long-Term Security Practices
Incorporate regular upgrades and maintain vigilance to prevent similar vulnerabilities in the future.
Patching and Updates
Regularly check for security patches and updates from Hyperledger Fabric to ensure enhanced security and protection against known vulnerabilities.