CVE-2022-36918 : Security Advisory and Response
Learn about CVE-2022-36918 affecting Jenkins Buckminster Plugin, allowing attackers to verify specific file paths on the system. Find mitigation steps and long-term security practices.
This article provides details about CVE-2022-36918, a vulnerability found in Jenkins Buckminster Plugin that could allow attackers to check for the existence of a specific file path on the Jenkins controller file system.
Understanding CVE-2022-36918
This section will cover what CVE-2022-36918 is and its potential impact.
What is CVE-2022-36918?
CVE-2022-36918 refers to a vulnerability in Jenkins Buckminster Plugin versions 1.1.1 and earlier that lacks proper permission checks during form validation, enabling users with Overall/Read permission to verify the presence of a file on the Jenkins controller file system.
The Impact of CVE-2022-36918
The vulnerability could be exploited by attackers with specific permissions to detect the existence of arbitrary files on the Jenkins server, potentially leading to unauthorized access or data leakage.
Technical Details of CVE-2022-36918
In this section, we will delve into the technical aspects of the vulnerability.
Vulnerability Description
The flaw arises from the inadequate permission verification in a form validation method within Jenkins Buckminster Plugin, ultimately allowing unauthorized file path verification.
Affected Systems and Versions
Jenkins Buckminster Plugin versions up to and including 1.1.1 are affected by this vulnerability, putting instances with these versions at risk.
Exploitation Mechanism
By leveraging Overall/Read permissions within Jenkins, an attacker can exploit the lack of permission checks in the form validation to search for arbitrary files on the Jenkins controller system.
Mitigation and Prevention
This section outlines steps to mitigate and prevent exploitation of CVE-2022-36918.
Immediate Steps to Take
Administrators are advised to update Jenkins Buckminster Plugin to a secure version that addresses the vulnerability. Additionally, restricting permissions can help limit potential exploitation.
Long-Term Security Practices
Implementing least privilege principles, regular security audits, and educating users on secure practices can enhance the overall security posture of Jenkins instances.
Patching and Updates
Regularly applying security patches and updates provided by Jenkins project is crucial to remediate vulnerabilities and strengthen the platform's security.