CVE-2018-3996 Explained : Impact and Mitigation

A security flaw has been discovered in Foxit Software's PDF Reader version 9.2.0.9297 that allows for remote code execution through a specially crafted PDF document.

Understanding CVE-2018-3996

This CVE involves a vulnerability in Foxit PDF Reader version 9.2.0.9297 that enables attackers to execute arbitrary code.

What is CVE-2018-3996?

The vulnerability allows for the execution of arbitrary code through a specific type of JavaScript in Foxit PDF Reader.
It can be triggered by opening a malicious PDF file or visiting a compromised website.

The Impact of CVE-2018-3996

CVSS Score: 8 (High)
Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: Required
Confidentiality, Integrity, and Availability Impact: High
Scope: Unchanged
This vulnerability poses a significant risk as it can lead to the execution of malicious code on the affected system.

Technical Details of CVE-2018-3996

Vulnerability Description

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit PDF Reader.
A specially crafted PDF document can trigger the reuse of a previously freed object in memory, allowing for arbitrary code execution.

Affected Systems and Versions

Affected Product: Foxit PDF Reader
Affected Version: 9.2.0.9297

Exploitation Mechanism

Attackers can exploit this vulnerability by tricking users into opening a malicious PDF file or by directing them to a compromised website.

Mitigation and Prevention

Immediate Steps to Take

Disable the browser plugin extension for Foxit PDF Reader if not essential.
Avoid opening PDF files from untrusted or unknown sources.
Regularly update Foxit PDF Reader to the latest version.

Long-Term Security Practices

Educate users about the risks of opening files from unknown sources.
Implement network security measures to detect and block malicious PDF files.

Patching and Updates

Apply patches and updates provided by Foxit Software promptly to address this vulnerability.