CVE-2018-3941 Explained : Impact and Mitigation

A vulnerability in the JavaScript engine of Foxit PDF Reader version 9.1.0.5096, developed by Foxit Software, allows for remote code execution by manipulating a PDF document.

Understanding CVE-2018-3941

This CVE involves a use-after-free vulnerability in Foxit PDF Reader version 9.1.0.5096, enabling arbitrary code execution through a specially crafted PDF document.

What is CVE-2018-3941?

The vulnerability in Foxit PDF Reader version 9.1.0.5096 allows attackers to execute arbitrary code by repurposing a freed object in memory through a manipulated PDF file.
Attackers must trick users into opening the malicious PDF to exploit this vulnerability.

The Impact of CVE-2018-3941

CVSS Base Score: 8 (High)
Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: Required
Confidentiality, Integrity, and Availability Impact: High

Technical Details of CVE-2018-3941

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability allows attackers to trigger arbitrary code execution by reusing a freed object in memory.

Affected Systems and Versions

Affected Product: Foxit PDF Reader
Affected Version: 9.1.0.5096

Exploitation Mechanism

Attackers exploit this vulnerability by manipulating PDF documents to repurpose freed memory objects for code execution.

Mitigation and Prevention

Protecting systems from CVE-2018-3941 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Foxit PDF Reader to a patched version.
Avoid opening PDF files from untrusted or unknown sources.
Implement security awareness training to recognize phishing attempts.

Long-Term Security Practices

Regularly update software and security patches.
Use reputable antivirus software to detect and prevent malicious files.
Employ network segmentation to limit the impact of potential attacks.
Consider using alternative PDF readers with strong security features.

Patching and Updates

Foxit Software may release patches to address the vulnerability. Stay informed about updates and apply them promptly.