CVE-2017-5627 : Vulnerability Insights and Analysis

Artifex Software, Inc. revealed a vulnerability in MuJS software, impacting versions prior to 4006739a28367c708dea19aeb19b8a1a9326ce08. The issue arises from a lack of safeguard against negative array lengths, leading to an integer overflow.

Understanding CVE-2017-5627

This CVE involves a vulnerability in MuJS software that can result in an integer overflow due to a specific issue in the jsR_setproperty function.

What is CVE-2017-5627?

MuJS software versions before 4006739a28367c708dea19aeb19b8a1a9326ce08 are susceptible to an integer overflow triggered by a flaw in handling negative array lengths.

The Impact of CVE-2017-5627

The vulnerability allows attackers to exploit a specially crafted JS file to trigger an integer overflow, potentially leading to a denial of service or arbitrary code execution.

Technical Details of CVE-2017-5627

MuJS software vulnerability details and impact.

Vulnerability Description

The jsR_setproperty function in the jsrun.c file lacks a check for negative array lengths, causing an integer overflow in the js_pushstring function when processing a malicious JS file.

Affected Systems and Versions

MuJS versions prior to 4006739a28367c708dea19aeb19b8a1a9326ce08

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious JS file to trigger the integer overflow.

Mitigation and Prevention

Steps to mitigate and prevent CVE-2017-5627.

Immediate Steps to Take

Update MuJS software to version 4006739a28367c708dea19aeb19b8a1a9326ce08 or later.
Implement input validation to prevent malicious inputs.

Long-Term Security Practices

Regularly monitor and update software for security patches.
Conduct security audits to identify and address vulnerabilities.

Patching and Updates

Apply patches provided by Artifex Software, Inc. promptly to address the vulnerability.