CVE-2018-3959 : Exploit Details and Defense Strategies

Foxit PDF Reader version 9.1.0.5096, developed by Foxit Software, contains a use-after-free vulnerability in its JavaScript engine. This vulnerability allows remote code execution by manipulating the Author property of the this.info object.

Understanding CVE-2018-3959

Foxit PDF Reader version 9.1.0.5096 is susceptible to a use-after-free vulnerability that can be exploited for remote code execution.

What is CVE-2018-3959?

The vulnerability in Foxit PDF Reader version 9.1.0.5096 allows an attacker to execute arbitrary code by exploiting a use-after-free condition in the JavaScript engine when accessing the Author property of the this.info object.

The Impact of CVE-2018-3959

The impact of this vulnerability is rated as high, with a CVSS base score of 8.0. It can lead to unauthorized remote code execution with high confidentiality, integrity, and availability impacts.

Technical Details of CVE-2018-3959

Foxit PDF Reader version 9.1.0.5096 is affected by a critical use-after-free vulnerability that can result in remote code execution.

Vulnerability Description

The vulnerability arises from improper handling of memory when accessing the Author property of the this.info object, allowing an attacker to execute malicious code.

Affected Systems and Versions

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

Exploitation Mechanism

To exploit this vulnerability, an attacker must trick a user into opening a corrupted file or visit a malicious website with the browser plugin extension enabled.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2018-3959.

Immediate Steps to Take

Disable the browser plugin extension for Foxit PDF Reader if not essential.
Avoid opening 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 untrusted sources.
Implement network security measures to detect and block malicious files.

Patching and Updates

Apply security patches provided by Foxit Software promptly to address the vulnerability and enhance system security.