CVE-2022-30962 : Vulnerability Insights and Analysis

Jenkins Global Variable String Parameter Plugin 1.2 and earlier versions are affected by a stored cross-site scripting (XSS) vulnerability. Attackers with Item/Configure permission can exploit this issue to execute malicious scripts.

Understanding CVE-2022-30962

This CVE identifies a security vulnerability in Jenkins Global Variable String Parameter Plugin that can lead to XSS attacks.

What is CVE-2022-30962?

Jenkins Global Variable String Parameter Plugin 1.2 and prior versions fail to escape the name and description of Global Variable String parameters on parameter display views. This flaw allows attackers with specific permission to launch stored cross-site scripting attacks.

The Impact of CVE-2022-30962

The vulnerability poses a risk of XSS attacks, enabling attackers to inject and execute arbitrary scripts with the privileges of the victim user. This can result in sensitive data theft, privilege escalation, or unauthorized actions.

Technical Details of CVE-2022-30962

This section discusses the specifics of the vulnerability.

Vulnerability Description

The issue lies in Jenkins Global Variable String Parameter Plugin's handling of Global Variable String parameters' name and description. Lack of proper escaping allows malicious scripts to be stored and executed.

Affected Systems and Versions

Jenkins Global Variable String Parameter Plugin versions equal to or less than 1.2 are confirmed to be affected. The exact impact on future versions starting from 'next of 1.2' is currently unknown.

Exploitation Mechanism

By exploiting this vulnerability, attackers can insert malicious scripts into the parameters' name and description fields. When these parameters are displayed in views, the scripts get executed in the context of the victim user.

Mitigation and Prevention

Understanding the steps for mitigating and preventing this vulnerability is crucial.

Immediate Steps to Take

Jenkins administrators should upgrade the Global Variable String Parameter Plugin to a secure version above 1.2 to prevent exploitation. Additionally, restricting access to the Item/Configure permission can limit the attack surface.

Long-Term Security Practices

Regular security audits, code reviews, and user permission management are vital for long-term security. Implementing best practices for secure coding and input validation can help prevent similar vulnerabilities.

Patching and Updates

Stay informed about security updates from Jenkins project and promptly apply patches to ensure your Jenkins instance is protected against known vulnerabilities.