CVE-2020-2122 : Vulnerability Insights and Analysis

Jenkins Brakeman Plugin 0.12 and earlier versions are susceptible to a stored cross-site scripting vulnerability due to improper handling of JSON data.

Understanding CVE-2020-2122

This CVE involves a security issue in the Jenkins Brakeman Plugin that could be exploited by attackers to execute cross-site scripting attacks.

What is CVE-2020-2122?

Jenkins Brakeman Plugin versions 0.12 and below fail to properly escape values from parsed JSON files, allowing malicious users to trigger stored cross-site scripting vulnerabilities.

The Impact of CVE-2020-2122

The vulnerability enables attackers who can manipulate Brakeman post-build step input data to execute cross-site scripting attacks, potentially compromising the integrity of the Jenkins environment.

Technical Details of CVE-2020-2122

The technical aspects of the CVE provide insight into the vulnerability's description, affected systems, and exploitation mechanism.

Vulnerability Description

Jenkins Brakeman Plugin versions 0.12 and earlier mishandle JSON data rendering, leading to a stored cross-site scripting vulnerability that can be leveraged by malicious users.

Affected Systems and Versions

Product: Jenkins Brakeman Plugin
Vendor: Jenkins project
Versions Affected: <= 0.12 (unspecified version type: custom)

Exploitation Mechanism

Attackers with the ability to control Brakeman post-build step input data can exploit this vulnerability to execute cross-site scripting attacks.

Mitigation and Prevention

Protecting systems from CVE-2020-2122 involves immediate actions and long-term security practices.

Immediate Steps to Take

Upgrade Jenkins Brakeman Plugin to a version beyond 0.12 to mitigate the vulnerability.
Monitor and restrict access to the Brakeman post-build step input data.

Long-Term Security Practices

Implement input validation mechanisms to prevent malicious data injection.
Regularly update and patch Jenkins plugins to address security vulnerabilities.
Educate users on secure coding practices to minimize the risk of cross-site scripting attacks.
Stay informed about security advisories and best practices to enhance Jenkins security.

Patching and Updates

Ensure timely installation of security patches and updates for Jenkins Brakeman Plugin to address known vulnerabilities.