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CVE-2021-21622 : Vulnerability Insights and Analysis

Learn about CVE-2021-21622 affecting Jenkins Artifact Repository Parameter Plugin. Find out the impact, technical details, affected versions, exploits, and mitigation steps.

Jenkins Artifact Repository Parameter Plugin version 1.0.0 and earlier is vulnerable to a stored cross-site scripting (XSS) attack due to inadequate escaping of parameter names and descriptions. This vulnerability can be exploited by attackers with Job/Configure permission.

Understanding CVE-2021-21622

This section provides an overview of the CVE-2021-21622 vulnerability affecting Jenkins Artifact Repository Parameter Plugin.

What is CVE-2021-21622?

The CVE-2021-21622 vulnerability exists in Jenkins Artifact Repository Parameter Plugin versions 1.0.0 and prior, allowing attackers with Job/Configure permission to execute stored cross-site scripting attacks by exploiting the lack of proper parameter names and descriptions escaping.

The Impact of CVE-2021-21622

The impact of this vulnerability is the risk of unauthorized access and manipulation of Jenkins job configurations, potentially leading to further system compromise.

Technical Details of CVE-2021-21622

This section delves into the technical aspects of the CVE-2021-21622 vulnerability.

Vulnerability Description

Jenkins Artifact Repository Parameter Plugin 1.0.0 and earlier fail to escape parameter names and descriptions properly, enabling stored cross-site scripting (XSS) attacks by privileged attackers.

Affected Systems and Versions

The affected systems include Jenkins Artifact Repository Parameter Plugin versions up to and including 1.0.0.

Exploitation Mechanism

Attackers with Job/Configure permission can exploit this vulnerability to inject malicious scripts into parameter names and descriptions, leading to XSS attacks.

Mitigation and Prevention

To address the CVE-2021-21622 vulnerability, consider the following mitigation strategies.

Immediate Steps to Take

        Upgrade Jenkins Artifact Repository Parameter Plugin to a version beyond 1.0.0 that includes a security patch.
        Restrict Job/Configure permissions to trusted entities only.

Long-Term Security Practices

        Regularly monitor Jenkins security advisories for any updates related to security vulnerabilities.
        Implement a robust security training program for users with Job/Configure permissions to understand the risks associated with XSS attacks.

Patching and Updates

Stay informed about security patches released by Jenkins project for Jenkins Artifact Repository Parameter Plugin and ensure timely application of patches to prevent exploitation of known vulnerabilities.

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