CVE-2022-34198 : Security Advisory and Response

Jenkins Stash Branch Parameter Plugin version 0.3.0 and earlier has a stored cross-site scripting (XSS) vulnerability, allowing attackers with Item/Configure permission to exploit it.

Understanding CVE-2022-34198

This CVE relates to a security issue in the Jenkins Stash Branch Parameter Plugin that can be leveraged by attackers to execute XSS attacks.

What is CVE-2022-34198?

The CVE-2022-34198 vulnerability is found in versions of the Jenkins Stash Branch Parameter Plugin up to 0.3.0, where input parameters are not properly escaped when displayed, leading to a potential XSS threat.

The Impact of CVE-2022-34198

The impact of this vulnerability is significant as it allows malicious actors with the right permissions to inject and execute arbitrary script code, compromising the security and integrity of Jenkins instances.

Technical Details of CVE-2022-34198

This section covers the intricate technical aspects of CVE-2022-34198.

Vulnerability Description

The flaw in Jenkins Stash Branch Parameter Plugin versions <= 0.3.0 enables stored cross-site scripting (XSS) attacks through unescaped input parameters displayed in certain views.

Affected Systems and Versions

The affected systems are those running Jenkins with the Stash Branch Parameter Plugin versions up to and including 0.3.0.

Exploitation Mechanism

Attackers with Item/Configure permissions can exploit the vulnerability by injecting malicious scripts into the name and description fields of Stash Branch parameters.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-34198, the following actions can be taken:

Immediate Steps to Take

Update Jenkins Stash Branch Parameter Plugin to a secure version above 0.3.0.
Restrict permissions for Item/Configure to trusted users only.

Long-Term Security Practices

Regular security training for users on safe coding practices.
Continuous monitoring of Jenkins plugins for security updates.

Patching and Updates

Stay informed about security advisories from Jenkins and promptly apply patches and updates to address known vulnerabilities.