CVE-2019-10340 : What You Need to Know

Jenkins Docker Plugin versions 1.1.6 and older contained a cross-site request forgery vulnerability that allowed unauthorized users to connect to attacker-specified URLs and capture credentials stored in Jenkins.

Understanding CVE-2019-10340

This CVE involves a security vulnerability in the Jenkins Docker Plugin.

What is CVE-2019-10340?

CVE-2019-10340 is a cross-site request forgery vulnerability in Jenkins Docker Plugin versions 1.1.6 and earlier, enabling unauthorized users to access specific URLs specified by attackers and potentially extract stored credentials.

The Impact of CVE-2019-10340

The vulnerability could lead to unauthorized access to sensitive information stored in Jenkins, posing a risk to the confidentiality and integrity of data.

Technical Details of CVE-2019-10340

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability in Jenkins Docker Plugin versions 1.1.6 and earlier allowed users with Overall/Read access to connect to attacker-specified URLs using attacker-acquired credentials IDs, potentially compromising stored credentials.

Affected Systems and Versions

Product: Jenkins Docker Plugin
Vendor: Jenkins project
Vulnerable Versions: 1.1.6 and earlier

Exploitation Mechanism

The flaw in DockerAPI.DescriptorImpl#doTestConnection enabled unauthorized users to connect to URLs specified by attackers and potentially extract credentials stored in Jenkins.

Mitigation and Prevention

Protecting systems from CVE-2019-10340 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Jenkins Docker Plugin to a non-vulnerable version.
Monitor and restrict access to sensitive Jenkins URLs.
Regularly review and revoke unnecessary credentials.

Long-Term Security Practices

Implement least privilege access controls.
Conduct regular security audits and vulnerability assessments.
Educate users on secure credential management practices.

Patching and Updates

Apply security patches promptly.
Stay informed about security advisories and updates from Jenkins.