CVE-2019-10405 : What You Need to Know

Jenkins versions prior to 2.196 and LTS 2.176.3 and earlier are affected by a vulnerability that exposes the HTTP request header 'Cookie' on the /whoAmI/ URL, potentially leading to XSS attacks and unauthorized access to session cookies.

Understanding CVE-2019-10405

This CVE identifies a security issue in Jenkins that could be exploited by attackers to compromise user sessions.

What is CVE-2019-10405?

In Jenkins versions before 2.196 and LTS 2.176.3 and earlier, a vulnerability allowed the 'Cookie' HTTP request header value to be displayed on the /whoAmI/ URL, enabling attackers to exploit XSS vulnerabilities and access HTTP session cookies.

The Impact of CVE-2019-10405

The vulnerability could lead to unauthorized access to sensitive session cookies, potentially compromising user sessions and data security.

Technical Details of CVE-2019-10405

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

Jenkins versions prior to 2.196 and LTS 2.176.3 and earlier exposed the 'Cookie' HTTP request header on the /whoAmI/ URL, facilitating XSS attacks and unauthorized access to session cookies.

Affected Systems and Versions

Jenkins versions before 2.196
LTS versions 2.176.3 and earlier

Exploitation Mechanism

Attackers could exploit this vulnerability by leveraging XSS vulnerabilities to obtain and misuse HTTP session cookies.

Mitigation and Prevention

Protect your systems and data from potential exploits with the following measures:

Immediate Steps to Take

Upgrade Jenkins to version 2.196 or later
Apply security patches promptly
Monitor and restrict access to sensitive cookies

Long-Term Security Practices

Regularly update Jenkins and its plugins
Implement secure coding practices to prevent XSS vulnerabilities
Conduct security audits and penetration testing

Patching and Updates

Stay vigilant for security updates and patches released by Jenkins to address this vulnerability and enhance system security.