CVE-2023-45811 Explained : Impact and Mitigation

This article discusses a Prototype pollution vulnerability in the Synchrony deobfuscator software, potentially leading to arbitrary code execution.

Understanding CVE-2023-45811

This vulnerability, assigned with CVE ID CVE-2023-45811, affects the Synchrony deobfuscator software.

What is CVE-2023-45811?

A

__proto__

pollution vulnerability exists in versions before v2.4.4 of the Synchrony deobfuscator. This vulnerability allows crafted input to modify properties in the Object prototype, which could potentially lead to arbitrary code execution.

The Impact of CVE-2023-45811

Successful exploitation of this vulnerability could result in arbitrary code execution on affected systems. The vulnerability exists in the

LiteralMap

transformer of the Synchrony deobfuscator.

Technical Details of CVE-2023-45811

This section provides more insight into the vulnerability and its implications.

Vulnerability Description

The vulnerability arises due to the

__proto__

pollution in the

LiteralMap

transformer, enabling attackers to manipulate Object prototype properties using crafted input.

Affected Systems and Versions

The Synchrony deobfuscator versions before v2.4.4 are impacted by this vulnerability, specifically versions

>= 2.0.1, < 2.4.4

.

Exploitation Mechanism

Exploitation of this vulnerability involves malicious actors leveraging the

__proto__

pollution in the

LiteralMap

transformer to execute arbitrary code on compromised systems.

Mitigation and Prevention

To secure systems against CVE-2023-45811, immediate steps and long-term security practices are crucial.

Immediate Steps to Take

Users are strongly advised to upgrade to version v2.4.4 of the Synchrony deobfuscator to mitigate the

__proto__

pollution vulnerability. For users unable to upgrade immediately, launching Node with specific flags can provide temporary protection.

Long-Term Security Practices

Implementing secure coding practices, regularly updating software, and conducting security assessments are essential for maintaining system integrity and safeguarding against similar vulnerabilities.

Patching and Updates

It is recommended to regularly monitor for security advisories from the Synchrony deobfuscator provider and promptly apply patches and updates to address known vulnerabilities.