CVE-2020-2120 : What You Need to Know

Jenkins FitNesse Plugin 1.30 and earlier is vulnerable to XML external entity (XXE) attacks due to a misconfiguration in the XML parser.

Understanding CVE-2020-2120

Jenkins FitNesse Plugin versions 1.30 and below are affected by a security vulnerability that could allow for XXE attacks.

What is CVE-2020-2120?

This CVE identifies a vulnerability in Jenkins FitNesse Plugin versions 1.30 and earlier that lack proper configuration in the XML parser, making them susceptible to XML external entity (XXE) attacks.

The Impact of CVE-2020-2120

The vulnerability could be exploited by attackers to perform XXE attacks, potentially leading to sensitive data exposure, server-side request forgery (SSRF), or denial of service (DoS) attacks.

Technical Details of CVE-2020-2120

Jenkins FitNesse Plugin 1.30 and earlier are affected by the following:

Vulnerability Description

The plugin fails to configure the XML parser adequately, allowing malicious entities to exploit XXE vulnerabilities.

Affected Systems and Versions

Product: Jenkins FitNesse Plugin
Vendor: Jenkins project
Versions Affected: <= 1.30

Exploitation Mechanism

Attackers can craft malicious XML payloads to trigger XXE attacks, potentially leading to data leakage or system compromise.

Mitigation and Prevention

To address CVE-2020-2120, consider the following steps:

Immediate Steps to Take

Update Jenkins FitNesse Plugin to a version beyond 1.30 that includes a fix for the XXE vulnerability.
Implement strict input validation to prevent malicious XML payloads.
Monitor and restrict network access to Jenkins instances.

Long-Term Security Practices

Regularly update plugins and software to patch known vulnerabilities.
Conduct security assessments and audits to identify and mitigate potential risks.

Patching and Updates

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