CVE-2020-2159 : Exploit Details and Defense Strategies

Jenkins CryptoMove Plugin 0.1.33 and earlier allows attackers with Job/Configure access to execute arbitrary OS commands on the Jenkins master as the OS user account running Jenkins.

Understanding CVE-2020-2159

Jenkins CryptoMove Plugin vulnerability allowing arbitrary OS command execution.

What is CVE-2020-2159?

This CVE refers to a security flaw in Jenkins CryptoMove Plugin versions 0.1.33 and earlier that enables attackers with Job/Configure access to run unauthorized OS commands on the Jenkins master.

The Impact of CVE-2020-2159

The vulnerability can lead to unauthorized execution of commands on the Jenkins master, posing a significant security risk to the system and potentially compromising sensitive data.

Technical Details of CVE-2020-2159

Details of the vulnerability in Jenkins CryptoMove Plugin.

Vulnerability Description

The issue stems from improper neutralization of special elements in OS commands, specifically an OS Command Injection vulnerability (CWE-78).

Affected Systems and Versions

Product: Jenkins CryptoMove Plugin
Vendor: Jenkins project
Versions Affected:
0.1.33 and earlier (status: affected)
Next of 0.1.33 (status: unknown)

Exploitation Mechanism

Attackers with Job/Configure access can exploit the vulnerability to execute unauthorized OS commands on the Jenkins master.

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2020-2159 vulnerability.

Immediate Steps to Take

Upgrade Jenkins CryptoMove Plugin to a version beyond 0.1.33 to mitigate the vulnerability.
Restrict Job/Configure access to trusted users only.

Long-Term Security Practices

Regularly monitor and audit Jenkins plugins for security vulnerabilities.
Educate users on secure coding practices to prevent similar vulnerabilities.

Patching and Updates

Stay informed about security advisories from Jenkins project and promptly apply patches and updates to address known vulnerabilities.