CVE-2019-16540 : What You Need to Know

A path traversal vulnerability in Jenkins Support Core Plugin version 2.63 and earlier allows attackers with Overall/Read permission to delete arbitrary files on the Jenkins master.

Understanding CVE-2019-16540

Attackers with Overall/Read permission on Jenkins Support Core Plugin version 2.63 or earlier can exploit a path traversal vulnerability to maliciously delete any files on the Jenkins master.

What is CVE-2019-16540?

This CVE refers to a path traversal vulnerability in the Jenkins Support Core Plugin that enables attackers with specific permissions to delete files on the Jenkins master.

The Impact of CVE-2019-16540

The vulnerability allows malicious actors to delete arbitrary files on the Jenkins master, potentially leading to data loss, system disruption, and unauthorized access.

Technical Details of CVE-2019-16540

Vulnerability Description

Type: Path traversal vulnerability
Affected Version: Jenkins Support Core Plugin 2.63 and earlier
Attack Vector: Remote
Security Risk: High

Affected Systems and Versions

Jenkins Support Core Plugin version 2.63 and earlier

Exploitation Mechanism

Attackers with Overall/Read permission can exploit the path traversal vulnerability to delete files on the Jenkins master.

Mitigation and Prevention

Immediate Steps to Take

Upgrade Jenkins Support Core Plugin to a non-vulnerable version.
Restrict permissions to minimize the impact of potential attacks.
Monitor file deletion activities on the Jenkins master.

Long-Term Security Practices

Regularly update Jenkins and its plugins to the latest secure versions.
Implement the principle of least privilege to limit user permissions.
Conduct security audits and penetration testing to identify and address vulnerabilities.

Patching and Updates

Apply patches and security updates promptly to mitigate known vulnerabilities in Jenkins and its plugins.