CVE-2022-41231 Explained : Impact and Mitigation

Jenkins Build-Publisher Plugin 1.22 and earlier versions are vulnerable to attackers with Item/Configure permission allowing them to create or replace any config.xml file on the Jenkins controller file system through a crafted file name.

Understanding CVE-2022-41231

This CVE affects Jenkins Build-Publisher Plugin versions <= 1.22, potentially leading to unauthorized access and manipulation of crucial configuration files.

What is CVE-2022-41231?

CVE-2022-41231 is a security vulnerability in Jenkins Build-Publisher Plugin that enables attackers to exploit Item/Configure permission to tamper with config.xml files on the Jenkins controller filesystem using a specially crafted file name.

The Impact of CVE-2022-41231

The impact of this vulnerability is significant as it allows unauthorized users to access, modify, or replace critical configuration files, posing a serious security risk to the Jenkins environment.

Technical Details of CVE-2022-41231

The following technical details outline the vulnerability and its implications:

Vulnerability Description

Jenkins Build-Publisher Plugin 1.22 and earlier versions are susceptible to improper file manipulation, enabling attackers to alter config.xml files through a maliciously named file.

Affected Systems and Versions

The vulnerability affects Jenkins Build-Publisher Plugin versions <= 1.22. Users running these versions are at risk of unauthorized file modification.

Exploitation Mechanism

Attackers with Item/Configure permission can exploit the vulnerability by providing a crafted file name to an API endpoint, bypassing security controls and manipulating critical files.

Mitigation and Prevention

To address CVE-2022-41231 and enhance security measures, consider the following:

Immediate Steps to Take

Upgrade Jenkins Build-Publisher Plugin to a secure version above 1.22 to mitigate the vulnerability.
Restrict access permissions to sensitive Jenkins configuration files to authorized personnel only.

Long-Term Security Practices

Regularly monitor Jenkins security advisories and apply patches promptly to prevent exploitation of known vulnerabilities.
Implement least privilege access controls to limit the exposure of critical files to potential threats.

Patching and Updates

Stay informed about security updates for Jenkins plugins and the core system. Regularly update Jenkins and its plugins to the latest secure versions to ensure protection against known vulnerabilities.