CVE-2020-2104 : Exploit Details and Defense Strategies

Jenkins 2.218 and earlier, LTS 2.204.1 and earlier allowed users with Overall/Read access to view a JVM memory usage chart.

Understanding CVE-2020-2104

This CVE affects Jenkins versions 2.218 and earlier, as well as LTS 2.204.1 and earlier.

What is CVE-2020-2104?

CVE-2020-2104 is a vulnerability in Jenkins that permits users with Overall/Read access to observe a JVM memory usage chart.

The Impact of CVE-2020-2104

This vulnerability could allow unauthorized users to access sensitive information about JVM memory usage, potentially leading to security breaches or unauthorized system monitoring.

Technical Details of CVE-2020-2104

This section provides more in-depth technical information about the vulnerability.

Vulnerability Description

The vulnerability in Jenkins versions 2.218 and earlier, as well as LTS 2.204.1 and earlier, enables users with Overall/Read access to view JVM memory usage data.

Affected Systems and Versions

Affected Versions: Jenkins 2.218 and earlier, LTS 2.204.1 and earlier
Vendor: Jenkins project

Exploitation Mechanism

Unauthorized users with Overall/Read access can exploit this vulnerability to access JVM memory usage information.

Mitigation and Prevention

Protect your systems from CVE-2020-2104 with the following steps:

Immediate Steps to Take

Upgrade Jenkins to a non-vulnerable version
Restrict access permissions to prevent unauthorized users from viewing sensitive data

Long-Term Security Practices

Regularly review and update access controls in Jenkins
Monitor for unauthorized access to sensitive information

Patching and Updates

Apply security patches provided by Jenkins project to fix the vulnerability