CVE-2018-3940 : What You Need to Know

Foxit Software's PDF Reader version 9.1.0.5096 is vulnerable to a JavaScript engine exploit that can lead to remote code execution.

Understanding CVE-2018-3940

This CVE involves a use-after-free vulnerability in Foxit PDF Reader's JavaScript engine, allowing attackers to execute remote code.

What is CVE-2018-3940?

Foxit PDF Reader version 9.1.0.5096 is susceptible to a specially crafted PDF document exploit triggering a use-after-free vulnerability.
Attackers can reuse a freed object in memory by deceiving users into opening a malicious file.

The Impact of CVE-2018-3940

CVSS Score: 8 (High Severity)
Attack Vector: Network
Confidentiality, Integrity, and Availability Impact: High
User Interaction: Required
Privileges Required: Low
Scope: Unchanged
This vulnerability can result in remote code execution, posing a significant threat to affected systems.

Technical Details of CVE-2018-3940

Foxit PDF Reader version 9.1.0.5096 is at risk due to a critical vulnerability in its JavaScript engine.

Vulnerability Description

The exploit involves a use-after-free issue in the PDF Reader's JavaScript engine.
A specially crafted PDF file can trigger the reuse of a freed object in memory.

Affected Systems and Versions

Affected Product: Foxit PDF Reader
Vendor: Foxit Software
Affected Version: 9.1.0.5096

Exploitation Mechanism

Attackers exploit the vulnerability by tricking users into opening a malicious PDF document.

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices are crucial to mitigate the risks associated with CVE-2018-3940.

Immediate Steps to Take

Update Foxit PDF Reader to a patched version.
Avoid opening PDF files from untrusted or unknown sources.
Consider using alternative PDF readers until the vulnerability is resolved.

Long-Term Security Practices

Regularly update software and applications to patch known vulnerabilities.
Educate users on safe browsing habits and the risks associated with opening files from unfamiliar sources.

Patching and Updates

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