CVE-2023-24426 Explained : Impact and Mitigation

This is a published CVE-2023-24426 assigned by Jenkins on January 24, 2023. The vulnerability affects Jenkins Azure AD Plugin versions 303.va_91ef20ee49f and earlier, allowing the previous session to remain valid after login.

Understanding CVE-2023-24426

This CVE pertains to a security issue in the Jenkins Azure AD Plugin, specifically version 303.va_91ef20ee49f and previous versions. The vulnerability allows the persistence of the previous session even after a new login, posing a risk to the plugin's security.

What is CVE-2023-24426?

The CVE-2023-24426 refers to a flaw in the Jenkins Azure AD Plugin where the plugin fails to invalidate the previous session upon login, potentially leading to unauthorized access or session hijacking.

The Impact of CVE-2023-24426

The impact of CVE-2023-24426 can result in a compromise of the user's session, enabling unauthorized users to gain access to sensitive information or perform malicious actions using the affected Jenkins Azure AD Plugin.

Technical Details of CVE-2023-24426

This section outlines the specific technical aspects of the CVE-2023-24426 vulnerability in the Jenkins Azure AD Plugin.

Vulnerability Description

The vulnerability in Jenkins Azure AD Plugin versions 303.va_91ef20ee49f and earlier allows the retention of the previous session upon login, creating a security gap that could be exploited by attackers to access unauthorized features or data.

Affected Systems and Versions

The affected systems include instances running Jenkins Azure AD Plugin version 303.va_91ef20ee49f and prior versions. Users of these versions are at risk of session persistence vulnerabilities due to this issue.

Exploitation Mechanism

Attackers can potentially exploit this vulnerability by leveraging the persistent session to gain unauthorized access to the Jenkins Azure AD Plugin, manipulate configurations, or access sensitive information without proper authentication.

Mitigation and Prevention

Mitigating the CVE-2023-24426 vulnerability is crucial to maintain the security of Jenkins environments utilizing the Azure AD Plugin.

Immediate Steps to Take

Users are advised to update the Jenkins Azure AD Plugin to a secure version that addresses the session persistence issue. Additionally, monitoring user sessions and enforcing strong authentication practices can help reduce the risk of exploitation.

Long-Term Security Practices

Implementing regular security audits, conducting thorough testing of plugins for vulnerabilities, and educating users on security best practices are essential for enhancing the overall security posture of Jenkins instances.

Patching and Updates

Staying informed about security advisories from Jenkins and promptly applying patches or updates released by the vendor is critical in addressing known vulnerabilities such as CVE-2023-24426. Regularly updating plugins and software helps in safeguarding systems against potential threats.