CVE-2023-24436 Explained : Impact and Mitigation

This CVE record pertains to a vulnerability identified as CVE-2023-24436, which was published on January 24, 2023, by Jenkins. It involves a missing permission check in the Jenkins GitHub Pull Request Builder Plugin, specifically affecting versions 1.42.2 and earlier. The vulnerability allows attackers with Overall/Read permission to enumerate credential IDs stored in Jenkins.

Understanding CVE-2023-24436

This section delves into the specifics of CVE-2023-24436, its impact, technical details, and mitigation strategies.

What is CVE-2023-24436?

CVE-2023-24436 is a security vulnerability found in the Jenkins GitHub Pull Request Builder Plugin versions 1.42.2 and prior. It enables malicious actors possessing Overall/Read permission to identify credential IDs stored within the Jenkins platform.

The Impact of CVE-2023-24436

Given the nature of this vulnerability, unauthorized individuals or malicious entities with the specified permissions can potentially extract sensitive credential information from Jenkins, compromising the security and integrity of the system.

Technical Details of CVE-2023-24436

Outlined below are the technical particulars of CVE-2023-24436, including vulnerability description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

The vulnerability in Jenkins GitHub Pull Request Builder Plugin versions up to 1.42.2 allows individuals with Overall/Read permissions to discern the credential IDs of stored credentials within Jenkins.

Affected Systems and Versions

The Jenkins GitHub Pull Request Builder Plugin versions 1.42.2 and earlier are impacted by this vulnerability. Specifically, versions less than or equal to 1.42.2 fall under the affected category, while versions next to 1.42.2 have an unknown status regarding the vulnerability.

Exploitation Mechanism

The exploit involves leveraging the missing permission check in the Jenkins GitHub Pull Request Builder Plugin, granting unauthorized access to credential IDs for individuals with Overall/Read permissions.

Mitigation and Prevention

In light of CVE-2023-24436, it is crucial to implement immediate steps to mitigate the risks posed by this vulnerability and establish long-term security practices.

Immediate Steps to Take

Update the Jenkins GitHub Pull Request Builder Plugin to a version that addresses the vulnerability, if available.
Restrict permissions to minimize the impact of potential unauthorized access to credential IDs within Jenkins.

Long-Term Security Practices

Regularly review and update permissions within Jenkins to ensure that access controls are appropriately configured.
Conduct security audits to identify and address any potential vulnerabilities that may exist within Jenkins or its plugins.

Patching and Updates

Stay informed about security advisories and updates from Jenkins Project to promptly apply patches that address CVE-2023-24436 and other security vulnerabilities that may arise.