CVE-2019-1003003 : Security Advisory and Response

A security vulnerability in Jenkins versions 2.158 and earlier, as well as LTS 2.150.1 and earlier, allows attackers to create Remember Me cookies without expiration, potentially compromising user accounts.

Understanding CVE-2019-1003003

This CVE identifies an authorization flaw in Jenkins that could lead to unauthorized access to user accounts.

What is CVE-2019-1003003?

This vulnerability in Jenkins versions 2.158 and earlier and LTS 2.150.1 and earlier enables attackers with specific permissions to generate Remember Me cookies with no expiry, granting prolonged access to compromised accounts.

The Impact of CVE-2019-1003003

The vulnerability allows attackers to maintain access to user accounts that may have been temporarily compromised, posing a significant security risk.

Technical Details of CVE-2019-1003003

This section delves into the technical aspects of the CVE.

Vulnerability Description

The flaw is located in TokenBasedRememberMeServices2.java in the core/src/main/java/hudson/security directory, enabling attackers with Overall/RunScripts permission to create cookies without expiration.

Affected Systems and Versions

Jenkins versions 2.158 and earlier
LTS 2.150.1 and earlier

Exploitation Mechanism

Attackers with Overall/RunScripts permission can exploit the vulnerability to create Remember Me cookies without an expiration date, maintaining unauthorized access to compromised user accounts.

Mitigation and Prevention

Protecting systems from this vulnerability is crucial.

Immediate Steps to Take

Upgrade Jenkins to a non-vulnerable version
Monitor user accounts for suspicious activity
Implement multi-factor authentication

Long-Term Security Practices

Regularly update Jenkins and all plugins
Conduct security audits and penetration testing
Educate users on secure practices

Patching and Updates

Apply security patches promptly
Stay informed about security advisories and updates