CVE-2022-39396 Explained : Impact and Mitigation

Parse Server is an open-source backend platform that can be deployed on Node.js infrastructure. This CVE highlights a vulnerability in Parse Server versions prior to 4.10.18 and 5.3.1 on the 5.X branch. The issue allows for Remote Code Execution via prototype pollution in the MongoDB BSON parser, with a critical base CVSS score of 9.8.

Understanding CVE-2022-39396

Parse Server is susceptible to remote code execution due to a prototype pollution flaw in the MongoDB BSON parser. This poses a significant security risk to systems running affected versions of Parse Server.

What is CVE-2022-39396?

This CVE describes a vulnerability in Parse Server versions prior to 4.10.18 and 5.3.1 on the 5.X branch, where an attacker can exploit prototype pollution to execute remote code via the MongoDB BSON parser.

The Impact of CVE-2022-39396

The vulnerability poses a severe threat as it allows threat actors to execute arbitrary remote code, compromising the confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2022-39396

The following technical details shed light on the vulnerability:

Vulnerability Description

The vulnerability in Parse Server enables remote code execution through prototype pollution in the MongoDB BSON parser.

Affected Systems and Versions

Parse Server versions prior to 4.10.18 and 5.3.1 on the 5.X branch are affected by this vulnerability.

Exploitation Mechanism

An attacker can leverage the prototype pollution sink in affected versions to trigger remote code execution via the MongoDB BSON parser.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-39396, follow these recommendations:

Immediate Steps to Take

Upgrade Parse Server to version 5.3.1 for the 5.X branch and version 4.10.18 to patch the vulnerability. Additionally, keep systems updated and employ network security measures.

Long-Term Security Practices

Adopt secure coding practices, conduct regular security audits, monitor for unauthorized access, and educate personnel on security best practices.

Patching and Updates

Regularly check for security updates for Parse Server, apply patches promptly, and stay informed about emerging vulnerabilities.