CVE-2022-20614 : Exploit Details and Defense Strategies

A missing permission check in Jenkins Mailer Plugin 391.ve4a_38c1b_cf4b_ and earlier allows attackers with Overall/Read access to use the DNS used by the Jenkins instance to resolve an attacker-specified hostname.

Understanding CVE-2022-20614

This section will cover the details of CVE-2022-20614, its impact, technical description, affected systems, exploitation mechanism, mitigation strategies, and preventive measures.

What is CVE-2022-20614?

CVE-2022-20614 is a vulnerability in the Jenkins Mailer Plugin that allows attackers with Overall/Read access to manipulate the DNS resolution on the Jenkins instance.

The Impact of CVE-2022-20614

The security flaw enables malicious actors to specify a hostname for DNS resolution on the affected Jenkins environment, potentially leading to unauthorized access or data breaches.

Technical Details of CVE-2022-20614

Let's delve into the technical specifics of CVE-2022-20614 to understand the vulnerability better.

Vulnerability Description

The vulnerability arises from a missing permission check in the Jenkins Mailer Plugin, specifically in versions 391.ve4a_38c1b_cf4b_ and earlier.

Affected Systems and Versions

The Jenkins Mailer Plugin versions susceptible to this security issue include unspecified versions prior to 391.ve4a_38c1b_cf4b_.

Exploitation Mechanism

Attackers with Overall/Read access can exploit this vulnerability to influence DNS resolution on the Jenkins server by providing a specified hostname.

Mitigation and Prevention

To safeguard your systems from CVE-2022-20614, implement immediate steps, adopt long-term security practices, and prioritize patching and updates.

Immediate Steps to Take

Restrict Overall/Read access to authorized personnel only.
Monitor DNS activities for suspicious requests.

Long-Term Security Practices

Regularly update Jenkins and its plugins to the latest secure versions.
Conduct security audits to identify and address vulnerabilities proactively.

Patching and Updates

Apply patches released by Jenkins project to address the vulnerability and enhance the security posture of your Jenkins environment.