CVE-2018-1000186 Explained : Impact and Mitigation

A vulnerability in the Jenkins GitHub Pull Request Builder Plugin versions 1.41.0 and older allows attackers with Overall/Read access to connect to a specified URL and capture stored credentials.

Understanding CVE-2018-1000186

This CVE involves a security flaw in the Jenkins GitHub Pull Request Builder Plugin that can be exploited by attackers with specific access rights.

What is CVE-2018-1000186?

The vulnerability in GhprbGitHubAuth.java enables attackers to connect to a URL specified by them using obtained credentials IDs, potentially compromising Jenkins credentials.

The Impact of CVE-2018-1000186

Attackers with the mentioned access can misuse the vulnerability to access URLs and extract sensitive information stored in Jenkins.

Technical Details of CVE-2018-1000186

This section provides detailed technical insights into the CVE.

Vulnerability Description

The vulnerability in Jenkins GitHub Pull Request Builder Plugin versions 1.41.0 and older allows unauthorized access to URLs and credential extraction.

Affected Systems and Versions

Affected System: Jenkins GitHub Pull Request Builder Plugin
Affected Versions: 1.41.0 and older

Exploitation Mechanism

Attackers with Overall/Read access can exploit the vulnerability by connecting to a specified URL using obtained credentials IDs.

Mitigation and Prevention

Protecting systems from CVE-2018-1000186 is crucial for maintaining security.

Immediate Steps to Take

Update Jenkins GitHub Pull Request Builder Plugin to the latest version.
Restrict access rights to prevent unauthorized users from exploiting the vulnerability.

Long-Term Security Practices

Regularly monitor and audit access controls in Jenkins.
Educate users on secure credential management practices.

Patching and Updates

Apply security patches promptly to address known vulnerabilities in Jenkins plugins.