CVE-2023-49552 : Vulnerability Insights and Analysis

Understanding CVE-2023-49552

An Out of Bounds Write vulnerability has been identified in Cesanta mjs 2.20.0, potentially leading to a denial of service attack.

What is CVE-2023-49552?

CVE-2023-49552 highlights a security flaw in the mjs_op_json_stringify function within the msj.c file of Cesanta mjs 2.20.0. This vulnerability can be exploited by a remote attacker to trigger a denial of service.

The Impact of CVE-2023-49552

The impact of CVE-2023-49552 is the potential disruption of service for users of Cesanta mjs 2.20.0 due to the exploitation of the Out of Bounds Write issue.

Technical Details of CVE-2023-49552

Vulnerability Description

The vulnerability arises from improper handling of data within the mjs_op_json_stringify function, allowing an attacker to overwrite memory locations outside the bounds of an allocated buffer.

Affected Systems and Versions

All instances of Cesanta mjs 2.20.0 are affected by this vulnerability, exposing them to the risk of a denial of service attack.

Exploitation Mechanism

Exploitation of this vulnerability involves crafting specific input that exceeds the bounds of the intended buffer, leading to a write operation outside the permissible memory range.

Mitigation and Prevention

Immediate Steps to Take

To mitigate the risk posed by CVE-2023-49552, users are advised to apply the latest security patches or updates released by Cesanta for Cesanta mjs 2.20.0.

Long-Term Security Practices

It is recommended to regularly update software components and libraries to address known security vulnerabilities and follow secure coding practices to minimize exposure to similar exploits.

Patching and Updates

Stay informed about security advisories from Cesanta and promptly apply any patches or updates related to CVE-2023-49552 to ensure the security of Cesanta mjs 2.20.0.