CVE-2018-17621 Explained : Impact and Mitigation

A vulnerability in Foxit Reader version 9.0.1.5096 allows remote attackers to execute arbitrary code by exploiting a flaw in handling Format events.

Understanding CVE-2018-17621

This CVE involves a critical vulnerability in Foxit Reader that can be exploited by malicious actors to execute code on vulnerable systems.

What is CVE-2018-17621?

The vulnerability in Foxit Reader version 9.0.1.5096 enables unauthorized individuals to execute code by visiting a malicious page or opening a corrupted file. The issue stems from the mishandling of Format events, allowing attackers to run code within the current process.

The Impact of CVE-2018-17621

Attackers can exploit this vulnerability to execute arbitrary code on systems running the affected version of Foxit Reader.
User interaction is required for the exploit to be successful, either by visiting a malicious page or opening a corrupted file.
The weakness lies in the failure to validate the existence of an object before performing operations on it.
Identified as ZDI-CAN-6355, this vulnerability poses a significant security risk to users of Foxit Reader.

Technical Details of CVE-2018-17621

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability allows remote attackers to execute arbitrary code on systems with Foxit Reader 9.0.1.5096 by exploiting the mishandling of Format events.

Affected Systems and Versions

Product: Foxit Reader
Vendor: Foxit
Version: 9.0.1.5096

Exploitation Mechanism

Attackers can exploit the vulnerability by tricking users into visiting a page with malicious content or opening a corrupted file.
The flaw arises from the lack of object validation before executing operations, enabling code execution within the current process.

Mitigation and Prevention

Protecting systems from CVE-2018-17621 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Foxit Reader to the latest version to patch the vulnerability.
Avoid visiting suspicious websites or opening files from unknown sources.
Implement security measures to detect and prevent malicious code execution.

Long-Term Security Practices

Regularly update software and applications to address security vulnerabilities.
Educate users about safe browsing habits and the risks of opening untrusted files.
Employ security solutions like antivirus software and intrusion detection systems.

Patching and Updates

Foxit has released patches to address the vulnerability in affected versions.
Users should promptly apply the latest updates to secure their systems against potential exploits.