CVE-2023-49549 : Exploit Details and Defense Strategies

A denial of service vulnerability in Cesanta mjs 2.20.0 via the mjs_getretvalpos function.

Understanding CVE-2023-49549

This CVE involves an issue in Cesanta mjs 2.20.0 that can be exploited by a remote attacker for a denial of service attack.

What is CVE-2023-49549?

The CVE-2023-49549 vulnerability exists in Cesanta mjs 2.20.0 and can lead to a denial of service through the mjs_getretvalpos function in the msj.c file.

The Impact of CVE-2023-49549

This vulnerability allows a remote attacker to disrupt the normal operation of the affected service or system, resulting in a denial of service condition.

Technical Details of CVE-2023-49549

The following details provide more insight into the vulnerability.

Vulnerability Description

The vulnerability in Cesanta mjs 2.20.0 enables an attacker to trigger a denial of service through the mjs_getretvalpos function.

Affected Systems and Versions

The issue affects Cesanta mjs 2.20.0 version.

Exploitation Mechanism

The vulnerability can be exploited remotely by leveraging the mjs_getretvalpos function in the msj.c file.

Mitigation and Prevention

To address CVE-2023-49549, consider the following mitigation strategies.

Immediate Steps to Take

Developers should update the Cesanta mjs to a patched version and apply necessary security measures to prevent exploitation.

Long-Term Security Practices

Enhance overall system security by implementing secure coding practices, conducting regular security audits, and staying informed about potential vulnerabilities.

Patching and Updates

Stay vigilant for security updates and patches from Cesanta to safeguard against known vulnerabilities.