CVE-2019-10337 : Vulnerability Insights and Analysis

The Jenkins Token Macro Plugin version 2.7 and earlier contain a vulnerability known as XML external entities (XXE), allowing attackers to manipulate input file content and potentially access secrets stored in the Jenkins agent.

Understanding CVE-2019-10337

This CVE involves a security vulnerability in the Jenkins Token Macro Plugin that could lead to severe consequences if exploited.

What is CVE-2019-10337?

An XML external entities (XXE) vulnerability in Jenkins Token Macro Plugin 2.7 and earlier enables attackers to control the content of the input file for the "XML" macro, potentially extracting secrets from the Jenkins agent and initiating server-side request forgery or denial-of-service attacks.

The Impact of CVE-2019-10337

Attackers can gain access to sensitive information stored in the Jenkins agent
Possibility of server-side request forgery attacks
Potential for denial-of-service attacks

Technical Details of CVE-2019-10337

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability allows attackers to exploit the XML external entities (XXE) in the Jenkins Token Macro Plugin, version 2.7 and earlier, to manipulate input file content and extract sensitive data.

Affected Systems and Versions

Product: Jenkins Token Macro Plugin
Vendor: Jenkins project
Vulnerable Versions: 2.7 and earlier

Exploitation Mechanism

Attackers can manipulate the input file content of the "XML" macro to trigger the vulnerability, potentially leading to unauthorized access and other malicious activities.

Mitigation and Prevention

Protecting systems from CVE-2019-10337 is crucial to prevent security breaches.

Immediate Steps to Take

Update Jenkins Token Macro Plugin to the latest version
Monitor and restrict access to sensitive information
Implement network segmentation to limit the impact of potential attacks

Long-Term Security Practices

Regularly review and update security configurations
Conduct security training for personnel to enhance awareness
Perform periodic security assessments and audits

Patching and Updates

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