CVE-2021-33438 : Security Advisory and Response

An issue was discovered in mjs (mJS: Restricted JavaScript engine), ES6 (JavaScript version 6). This CVE involves a stack buffer overflow in json_parse_array() in mjs.c.

Understanding CVE-2021-33438

This section will provide insights into the nature and impact of CVE-2021-33438.

What is CVE-2021-33438?

CVE-2021-33438 is a vulnerability found in mjs (mJS: Restricted JavaScript engine) affecting ES6 (JavaScript version 6). The specific issue involves a stack buffer overflow in the json_parse_array() function in mjs.c.

The Impact of CVE-2021-33438

The vulnerability can potentially be exploited to execute arbitrary code or cause a denial of service (DoS) condition.

Technical Details of CVE-2021-33438

In this section, we will delve into the technical aspects of CVE-2021-33438.

Vulnerability Description

The vulnerability is due to a stack buffer overflow in the json_parse_array() function within the mjs.c file.

Affected Systems and Versions

The issue affects mjs (mJS: Restricted JavaScript engine) utilizing ES6 (JavaScript version 6).

Exploitation Mechanism

Attackers may exploit this vulnerability to trigger a stack buffer overflow leading to potential code execution or DoS attacks.

Mitigation and Prevention

Here we discuss the necessary steps to mitigate and prevent exploitation of CVE-2021-33438.

Immediate Steps to Take

It is advised to implement the latest patches and updates provided by the vendor to address this vulnerability.

Long-Term Security Practices

Maintain regular security assessments and ensure that systems are updated with the latest security patches to prevent similar vulnerabilities.

Patching and Updates

Regularly monitor for security advisories from the vendor and apply patches promptly to secure the affected systems.