CVE-2022-29039 : Exploit Details and Defense Strategies

This article provides detailed information about CVE-2022-29039, a vulnerability in Jenkins Gerrit Trigger Plugin version 2.35.2 and earlier that can lead to a stored cross-site scripting (XSS) attack.

Understanding CVE-2022-29039

CVE-2022-29039 is a security flaw in the Jenkins Gerrit Trigger Plugin, allowing attackers with Item/Configure permission to exploit a cross-site scripting vulnerability.

What is CVE-2022-29039?

The vulnerability lies in versions of Jenkins Gerrit Trigger Plugin up to 2.35.2. Attackers can manipulate parameters in views to execute malicious scripts, posing an XSS risk.

The Impact of CVE-2022-29039

As a stored XSS vulnerability, CVE-2022-29039 enables attackers to inject and execute arbitrary scripts within the application, potentially compromising user data and system integrity.

Technical Details of CVE-2022-29039

The following points outline the technical aspects of CVE-2022-29039:

Vulnerability Description

Jenkins Gerrit Trigger Plugin 2.35.2 and prior versions fail to properly escape Base64 Encoded String parameter details, opening the door for stored XSS attacks.

Affected Systems and Versions

The affected versions include Jenkins Gerrit Trigger Plugin with a version number less than or equal to 2.35.2, specifically impacting custom installations.

Exploitation Mechanism

By manipulating the name and description parameters of Base64 Encoded Strings in views displaying parameters, attackers can execute malicious scripts, exploiting the XSS vulnerability.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-29039, consider the following steps:

Immediate Steps to Take

Upgrade Jenkins Gerrit Trigger Plugin to a patched version beyond 2.35.2.
Monitor and restrict user permissions, particularly Item/Configure access.

Long-Term Security Practices

Implement secure coding practices to sanitize user inputs and prevent XSS vulnerabilities.
Regularly update and patch software components to address known security issues.

Patching and Updates

Stay informed about security advisories from Jenkins project and promptly apply patches to mitigate the risks associated with vulnerabilities like CVE-2022-29039.