CVE-2023-26919 : Exploit Details and Defense Strategies

This CVE-2023-26919 relates to a vulnerability in delight-nashorn-sandbox version 0.2.4 and 0.2.5 that allows for sandbox escape. More details on this security issue are outlined below.

Understanding CVE-2023-26919

This section provides an overview of the nature and impact of CVE-2023-26919.

What is CVE-2023-26919?

CVE-2023-26919 is a vulnerability found in delight-nashorn-sandbox versions 0.2.4 and 0.2.5. It allows for sandbox escape when the allowExitFunctions parameter is configured to false. This permits the invocation of the exit and quit methods, leading to a potential Java process termination.

The Impact of CVE-2023-26919

The impact of CVE-2023-26919 is significant as it enables unauthorized exit operations within the Java process, potentially leading to service disruption, data loss, or other security risks.

Technical Details of CVE-2023-26919

In this section, we delve into the specifics of the vulnerability, including its description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability in delight-nashorn-sandbox versions 0.2.4 and 0.2.5 allows for a sandbox escape by leveraging the loadWithNewGlobal function to execute the exit and quit methods, resulting in termination of the Java process.

Affected Systems and Versions

The affected products by this vulnerability include delight-nashorn-sandbox versions 0.2.4 and 0.2.5. Users utilizing these versions are at risk of sandbox escape and potential Java process termination.

Exploitation Mechanism

The exploitation of CVE-2023-26919 involves setting the allowExitFunctions parameter to false, enabling the invocation of exit and quit methods through the loadWithNewGlobal function, thereby bypassing sandbox restrictions and terminating the Java process.

Mitigation and Prevention

This section outlines steps to mitigate and prevent the impact of CVE-2023-26919, including immediate actions and long-term security practices.

Immediate Steps to Take

Users and organizations are advised to update to a patched version of delight-nashorn-sandbox beyond 0.2.5 to mitigate the risk of sandbox escape and unauthorized exit operations.

Long-Term Security Practices

Implementing secure coding practices, conducting regular security assessments, and staying informed about software vulnerabilities are essential for long-term security resilience against such threats.

Patching and Updates

Regularly applying security patches and staying up-to-date with software releases is crucial for safeguarding against known vulnerabilities like CVE-2023-26919. Stay vigilant for updates from the delight-nashorn-sandbox project to ensure a secure software environment.