CVE-2022-34777 : Vulnerability Insights and Analysis

Jenkins GitLab Plugin version 1.5.34 and earlier are affected by a stored cross-site scripting (XSS) vulnerability due to improper handling of multiple fields in webhook-triggered builds.

Understanding CVE-2022-34777

This CVE record identifies a security vulnerability in Jenkins GitLab Plugin that could be exploited by attackers with certain permissions.

What is CVE-2022-34777?

The CVE-2022-34777 vulnerability in Jenkins GitLab Plugin allows attackers with specific permissions to execute malicious scripts through the description of webhook-triggered builds, potentially leading to cross-site scripting attacks.

The Impact of CVE-2022-34777

This vulnerability could be exploited by attackers with Item/Configure permission, allowing them to inject and execute malicious scripts, leading to potential data theft, unauthorized actions, and other security risks.

Technical Details of CVE-2022-34777

The following technical details outline the specifics of the CVE-2022-34777 vulnerability.

Vulnerability Description

Jenkins GitLab Plugin 1.5.34 and earlier do not properly escape multiple fields inserted into the description of webhook-triggered builds, resulting in a stored cross-site scripting vulnerability.

Affected Systems and Versions

Product: Jenkins GitLab Plugin
Vendor: Jenkins project
Versions Affected: <= 1.5.34
Version Type: Custom

Exploitation Mechanism

Attackers with Item/Configure permission can exploit this vulnerability by inserting malicious scripts into the description of webhook-triggered builds, leading to XSS attacks.

Mitigation and Prevention

To address the CVE-2022-34777 vulnerability, consider the following mitigation strategies.

Immediate Steps to Take

Update Jenkins GitLab Plugin to a version beyond 1.5.34 that includes a patch for this vulnerability.
Restrict access to Jenkins to only trusted users to minimize the risk of exploitation.

Long-Term Security Practices

Regularly monitor and audit webhook-triggered build descriptions for any signs of suspicious activity.
Educate users with Item/Configure permission on best practices to prevent XSS attacks.

Patching and Updates

Stay updated with security advisories from Jenkins project to ensure timely installation of patches for known vulnerabilities.