CVE-2020-2144 : Exploit Details and Defense Strategies

Jenkins Rundeck Plugin 3.6.6 and earlier versions are vulnerable to XML external entity (XXE) attacks.

Understanding CVE-2020-2144

Jenkins Rundeck Plugin lacks proper configuration in its XML parser, making it susceptible to XXE attacks.

What is CVE-2020-2144?

This CVE identifies a vulnerability in Jenkins Rundeck Plugin versions 3.6.6 and below, allowing attackers to exploit XXE vulnerabilities.

The Impact of CVE-2020-2144

The vulnerability could lead to unauthorized access to sensitive data, server-side request forgery (SSRF), and potential information disclosure.

Technical Details of CVE-2020-2144

Jenkins Rundeck Plugin's vulnerability to XXE attacks has the following technical implications:

Vulnerability Description

The issue arises from the plugin's failure to properly secure its XML parser, enabling malicious entities to exploit XXE vulnerabilities.

Affected Systems and Versions

Product: Jenkins Rundeck Plugin
Vendor: Jenkins project
Versions Affected: <= 3.6.6 (unspecified version type: custom)

Exploitation Mechanism

Attackers can leverage the XXE vulnerability in Jenkins Rundeck Plugin to manipulate XML input and potentially access sensitive data or execute SSRF attacks.

Mitigation and Prevention

To address CVE-2020-2144 and enhance system security, consider the following measures:

Immediate Steps to Take

Update Jenkins Rundeck Plugin to a patched version that addresses the XXE vulnerability.
Implement strict input validation to prevent malicious XML input.

Long-Term Security Practices

Regularly monitor and update all plugins and dependencies to mitigate potential vulnerabilities.
Conduct security audits and penetration testing to identify and address any security gaps.

Patching and Updates

Stay informed about security advisories from Jenkins project and promptly apply patches to secure the system against known vulnerabilities.