CVE-2023-41935 : What You Need to Know

A security vulnerability has been discovered in the Jenkins Azure AD Plugin, potentially exposing affected systems to attacks. Here is a detailed analysis of CVE-2023-41935.

Understanding CVE-2023-41935

This section provides insights into the nature and impact of the vulnerability.

What is CVE-2023-41935?

The Jenkins Azure AD Plugin versions 396.v86ce29279947 and earlier, with the exception of 378.380.v545b_1154b_3fb_, are susceptible to a non-constant time comparison function flaw. This flaw could be exploited by attackers to derive a valid nonce through statistical methods.

The Impact of CVE-2023-41935

The vulnerability allows potential attackers to bypass CSRF protection controls, leading to potential security breaches and unauthorized access to sensitive data.

Technical Details of CVE-2023-41935

Explore the specific technical aspects of the vulnerability in this section.

Vulnerability Description

Jenkins Azure AD Plugin fails to utilize a constant time comparison function for checking CSRF protection nonces, potentially enabling attackers to infer a legitimate nonce.

Affected Systems and Versions

Product: Jenkins Azure AD Plugin
Vendor: Jenkins Project
Vulnerable Versions:
396.v86ce29279947 and earlier
Excluding 378.380.v545b_1154b_3fb_

Exploitation Mechanism

Attackers can exploit the non-constant time comparison flaw to deduce valid nonces, circumventing CSRF protection mechanisms.

Mitigation and Prevention

Discover the essential steps to mitigate the impact of CVE-2023-41935 and prevent similar vulnerabilities in the future.

Immediate Steps to Take

It is crucial to update the Jenkins Azure AD Plugin to a secure version that addresses the non-constant time comparison vulnerability. Additionally, monitor system activity for any signs of unauthorized access.

Long-Term Security Practices

Incorporate secure coding practices, conduct regular security audits, and stay informed about potential vulnerabilities and patches within the Jenkins ecosystem.

Patching and Updates

Stay updated with security advisories from Jenkins Project and promptly apply patches to address known vulnerabilities.