CVE-2019-11411 Explained : Impact and Mitigation

A vulnerability was detected in Artifex MuJS 1.0.5, involving a stack-based buffer overflow in the implementations of Number#toFixed() and numtostr in jsnumber.c.

Understanding CVE-2019-11411

What is CVE-2019-11411?

An issue was discovered in Artifex MuJS 1.0.5, where the Number#toFixed() and numtostr implementations in jsnumber.c have a stack-based buffer overflow.

The Impact of CVE-2019-11411

This vulnerability could allow an attacker to execute arbitrary code or cause a denial of service by crashing the application.

Technical Details of CVE-2019-11411

Vulnerability Description

The vulnerability exists in the implementations of Number#toFixed() and numtostr in jsnumber.c, leading to a stack-based buffer overflow.

Affected Systems and Versions

Product: Artifex MuJS 1.0.5
Vendor: Artifex
Versions affected: All versions

Exploitation Mechanism

The vulnerability can be exploited by crafting a malicious input that triggers the buffer overflow, potentially leading to code execution or application crashes.

Mitigation and Prevention

Immediate Steps to Take

Apply the latest security patches provided by the vendor.
Consider implementing input validation mechanisms to prevent buffer overflows.
Monitor security advisories for any updates or patches related to this vulnerability.

Long-Term Security Practices

Regularly update software and libraries to the latest versions.
Conduct security assessments and penetration testing to identify and address vulnerabilities.
Implement secure coding practices to prevent buffer overflows and other common vulnerabilities.

Patching and Updates

Ensure that all systems running Artifex MuJS are updated with the latest patches and versions to mitigate the risk of exploitation.