CVE-2021-45978 : Security Advisory and Response

Foxit PDF Reader and PDF Editor before version 11.1 on macOS allow remote code execution through xfa.host.gotoURL in the XFA API.

Understanding CVE-2021-45978

The vulnerability in Foxit PDF Reader and PDF Editor allows remote attackers to execute arbitrary code via a specific method in the XFA API.

What is CVE-2021-45978?

This CVE identifies a security issue in Foxit PDF Reader and PDF Editor that enables attackers to run malicious code remotely through the XFA API.

The Impact of CVE-2021-45978

The vulnerability can result in remote code execution, posing a severe threat to the security and integrity of systems using affected versions.

Technical Details of CVE-2021-45978

The technical aspects of the CVE

Vulnerability Description

Foxit PDF Reader and PDF Editor versions prior to 11.1 on macOS are susceptible to remote code execution via the xfa.host.gotoURL function in the XFA API.

Affected Systems and Versions

Product: Foxit PDF Reader and PDF Editor
Vendor: Foxit
Affected Versions: < 11.1

Exploitation Mechanism

Attackers can exploit this vulnerability by using the xfa.host.gotoURL method in the XFA API to execute arbitrary code remotely.

Mitigation and Prevention

Mitigation strategies for CVE-2021-45978

Immediate Steps to Take

Update Foxit PDF Reader and PDF Editor to version 11.1 or newer to patch the vulnerability.
Avoid opening PDF files from untrusted or unknown sources.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly update software and applications to the latest versions.
Educate users on safe browsing habits and the risks associated with opening files from unverified sources.
Employ intrusion detection and prevention systems to monitor and mitigate potential threats.

Patching and Updates

Patch and update Foxit PDF Reader and PDF Editor to version 11.1 or above to address the security vulnerability.