CVE-2018-3853 : Security Advisory and Response

A vulnerability has been discovered in the JavaScript engine of Foxit Software's Foxit PDF Reader version 9.0.1.1049, allowing for remote code execution.

Understanding CVE-2018-3853

This CVE involves a use-after-free vulnerability in Foxit PDF Reader version 9.0.1.1049, potentially leading to arbitrary code execution.

What is CVE-2018-3853?

The vulnerability in Foxit PDF Reader version 9.0.1.1049 allows an attacker to reuse a freed object in memory by crafting a malicious PDF document.
Successful exploitation can result in the execution of arbitrary code on the affected system.
User interaction is required to trigger the vulnerability, either by opening a malicious file or visiting a compromised website with an active browser plugin extension.

The Impact of CVE-2018-3853

CVSS Base Score: 8.8 (High)
Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
Confidentiality, Integrity, and Availability Impact: High
The vulnerability poses a significant risk as it allows an attacker to execute arbitrary code on the target system.

Technical Details of CVE-2018-3853

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The vulnerability is a use-after-free issue in the JavaScript engine of Foxit PDF Reader version 9.0.1.1049.
It occurs when a specially crafted PDF document triggers the reuse of a freed object in memory, enabling arbitrary code execution.

Affected Systems and Versions

Product: Foxit PDF Reader
Vendor: Talos
Version: 9.0.1.1049

Exploitation Mechanism

Attackers can exploit this vulnerability by tricking users into opening a malicious PDF file or by directing them to a compromised website with an active browser plugin extension.

Mitigation and Prevention

Protecting systems from CVE-2018-3853 requires immediate actions and long-term security practices.

Immediate Steps to Take

Disable the browser plugin extension for Foxit PDF Reader if not essential.
Exercise caution when opening PDF files from untrusted or unknown sources.
Regularly update the software to patch known vulnerabilities.

Long-Term Security Practices

Implement security awareness training to educate users about the risks of opening unknown files.
Employ network and endpoint security solutions to detect and prevent malicious activities.

Patching and Updates

Stay informed about security updates released by Foxit Software and apply patches promptly to mitigate the risk of exploitation.