CVE-2023-41940 : What You Need to Know

Jenkins TAP Plugin 2.3 and earlier versions are vulnerable to stored cross-site scripting (XSS) attacks due to the lack of escaping TAP file contents.

Understanding CVE-2023-41940

This section will provide insights into the impact, technical details, and mitigation strategies related to CVE-2023-41940.

What is CVE-2023-41940?

CVE-2023-41940 refers to a vulnerability in Jenkins TAP Plugin versions 2.3 and prior, where attackers with control over TAP file contents can execute cross-site scripting attacks.

The Impact of CVE-2023-41940

The vulnerability allows malicious actors to inject and execute arbitrary scripts in the context of an unsuspecting user's browser, leading to potential data theft, session hijacking, and other malicious activities.

Technical Details of CVE-2023-41940

Let's delve deeper into the technical aspects of this security flaw.

Vulnerability Description

Jenkins TAP Plugin versions 2.3 and earlier do not properly escape TAP file contents, making it possible for threat actors to embed malicious scripts that will be executed when a user accesses the affected content.

Affected Systems and Versions

The vulnerability impacts Jenkins TAP Plugin versions equal to or lower than 2.3, utilizing the Maven versioning system.

Exploitation Mechanism

Attackers can exploit this issue by crafting TAP files containing malicious scripts, uploading them to the affected plugin, and tricking users into accessing the compromised content.

Mitigation and Prevention

Protecting systems from CVE-2023-41940 requires immediate actions and long-term security practices.

Immediate Steps to Take

Upgrade Jenkins TAP Plugin to a secure version above 2.3.
Regularly monitor logs for suspicious activities indicating a potential XSS attack.

Long-Term Security Practices

Implement content security policies to restrict script execution within web applications.
Educate users on identifying and avoiding phishing attempts that could lead to XSS exploitation.

Patching and Updates

Stay informed about security advisories and patches released by Jenkins Project to address known vulnerabilities like CVE-2023-41940.