CVE-2021-33441 Explained : Impact and Mitigation

An issue was discovered in mjs (mJS: Restricted JavaScript engine), ES6 (JavaScript version 6). The vulnerability involves a NULL pointer dereference in exec_expr() in mjs.c.

Understanding CVE-2021-33441

This section will cover the specifics of the CVE-2021-33441 vulnerability.

What is CVE-2021-33441?

The CVE-2021-33441 vulnerability pertains to a NULL pointer dereference in the exec_expr() function within mjs.c, an issue found in the mJS (mJS: Restricted JavaScript engine) associated with ES6 (JavaScript version 6).

The Impact of CVE-2021-33441

This vulnerability could potentially be exploited by attackers to cause a denial of service (DoS) or execute arbitrary code on affected systems.

Technical Details of CVE-2021-33441

Delve into the technical specifics of CVE-2021-33441 below.

Vulnerability Description

The vulnerability lies in the exec_expr() function within mjs.c, allowing attackers to trigger a NULL pointer dereference.

Affected Systems and Versions

All versions of the mJS (mJS: Restricted JavaScript engine) associated with ES6 (JavaScript version 6) are affected by CVE-2021-33441.

Exploitation Mechanism

Attackers can exploit this vulnerability to potentially achieve a DoS condition or execute arbitrary code on the target system.

Mitigation and Prevention

Discover how to address and prevent the CVE-2021-33441 vulnerability.

Immediate Steps to Take

It is recommended to apply vendor patches as soon as they are available to mitigate the vulnerability.

Long-Term Security Practices

Implementing secure coding practices and regularly updating software can help prevent such vulnerabilities.

Patching and Updates

Stay informed about security updates and apply patches promptly to protect systems against CVE-2021-33441.