CVE-2022-36023 : Security Advisory and Response

A detailed overview of the remote denial of service vulnerability in Hyperledger Fabric Gateway.

Understanding CVE-2022-36023

This section provides insights into the impact, technical details, and mitigation strategies for CVE-2022-36023.

What is CVE-2022-36023?

The CVE-2022-36023 vulnerability involves a remote denial of service issue in the Hyperledger Fabric Gateway, an enterprise-grade distributed ledger framework. When a gateway client application sends a malformed request to a gateway peer, it can crash the peer node.

The Impact of CVE-2022-36023

The impact of this vulnerability is rated as high. An attacker could exploit this issue to disrupt the availability of the Hyperledger Fabric Gateway, potentially causing downtime and service disruption.

Technical Details of CVE-2022-36023

This section delves into the vulnerability description, affected systems and versions, as well as the exploitation mechanism of CVE-2022-36023.

Vulnerability Description

The vulnerability arises due to a lack of adequate validation checks in the gateway client application. Version 2.4.6 of Hyperledger Fabric addresses this issue by detecting malformed requests and returning an error to the client.

Affected Systems and Versions

Hyperledger Fabric versions prior to 2.4.6 are impacted by this vulnerability. Specifically, versions lower than 2.4.6 are susceptible to remote denial of service attacks.

Exploitation Mechanism

By sending a specially crafted, malformed request to a gateway peer, an attacker can trigger the denial of service condition, resulting in the crash of the peer node.

Mitigation and Prevention

In this section, we outline immediate steps to take and long-term security practices to prevent the exploitation of CVE-2022-36023.

Immediate Steps to Take

Users are advised to upgrade their Hyperledger Fabric installations to version 2.4.6 immediately to mitigate the risk of remote denial of service attacks.

Long-Term Security Practices

Implement rigorous input validation mechanisms and security controls within the gateway client applications to prevent malicious requests from causing disruptions.

Patching and Updates

Regularly monitor for security advisories and updates from Hyperledger Fabric to stay informed about potential vulnerabilities and apply patches promptly.