CVE-2023-24422 : Vulnerability Insights and Analysis

A sandbox bypass vulnerability has been identified in the Jenkins Script Security Plugin, allowing attackers to execute arbitrary code in the context of the Jenkins controller JVM.

Understanding CVE-2023-24422

This section will cover the details of the CVE-2023-24422 vulnerability in the Jenkins Script Security Plugin.

What is CVE-2023-24422?

CVE-2023-24422 is a sandbox bypass vulnerability in the Jenkins Script Security Plugin, specifically affecting version 1228.vd93135a_2fb_25 and earlier. Attackers with permission to define and run sandboxed scripts, including Pipelines, can exploit this vulnerability to bypass sandbox protection and execute arbitrary code within the Jenkins controller JVM.

The Impact of CVE-2023-24422

The impact of this vulnerability is significant as it allows malicious actors to execute unauthorized code within the Jenkins controller JVM, potentially leading to further exploitation or compromise of the system.

Technical Details of CVE-2023-24422

In this section, we will delve into the technical aspects of the CVE-2023-24422 vulnerability.

Vulnerability Description

The vulnerability arises from a flaw in map constructors within the Jenkins Script Security Plugin, enabling attackers to circumvent sandbox protection mechanisms and run arbitrary code on the Jenkins controller JVM.

Affected Systems and Versions

The Jenkins Script Security Plugin version 1228.vd93135a_2fb_25 and prior are impacted by this vulnerability. Specifically, users running sandboxed scripts or Pipelines with these versions are at risk of exploitation.

Exploitation Mechanism

By leveraging the sandbox bypass vulnerability in the Jenkins Script Security Plugin, attackers can craft malicious scripts that execute unauthorized code within the Jenkins controller JVM, potentially leading to system compromise.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-24422, immediate actions should be taken to secure Jenkins instances and prevent unauthorized code execution.

Immediate Steps to Take

Update Jenkins Script Security Plugin: Users should promptly update the Jenkins Script Security Plugin to a patched version to eliminate the sandbox bypass vulnerability.
Restrict Script Execution: Limit access to defining and running sandboxed scripts, especially for users with elevated privileges, to reduce the attack surface.

Long-Term Security Practices

Regular Security Audits: Conduct periodic security audits of Jenkins instances to identify and address potential vulnerabilities proactively.
User Training: Educate users on secure scripting practices and the importance of adhering to best practices for Jenkins security.

Patching and Updates

Stay informed about security advisories and updates released by Jenkins Project to ensure timely application of patches addressing known vulnerabilities like CVE-2023-24422. Regularly checking for security announcements and applying updates promptly is crucial for maintaining a secure Jenkins environment.