CVE-2021-38565 : What You Need to Know

This article provides details about CVE-2021-38565, a vulnerability discovered in Foxit PDF Reader and PDF Editor that allows writing to arbitrary files via submitForm.

Understanding CVE-2021-38565

This section delves into the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2021-38565?

CVE-2021-38565 is a security flaw identified in Foxit PDF Reader and PDF Editor versions before 11.0.1. It enables an attacker to write to arbitrary files by leveraging the submitForm function.

The Impact of CVE-2021-38565

Exploitation of this vulnerability could lead to unauthorized modification of sensitive files, potentially resulting in data loss or unauthorized access.

Technical Details of CVE-2021-38565

This section outlines the specifics of the vulnerability, including affected systems, versions, and the exploitation mechanism.

Vulnerability Description

The flaw in Foxit PDF Reader and PDF Editor versions before 11.0.1 allows attackers to write to any file by misusing the submitForm feature, bypassing intended restrictions.

Affected Systems and Versions

All versions of Foxit PDF Reader and PDF Editor before 11.0.1 are impacted by CVE-2021-38565, making them susceptible to exploitation.

Exploitation Mechanism

By manipulating the submitForm function, threat actors can abuse this vulnerability to write to files beyond the intended scope, compromising data integrity.

Mitigation and Prevention

This section provides guidance on immediate actions to take, long-term security practices, and the importance of patching and updates.

Immediate Steps to Take

Users are advised to update Foxit PDF Reader and PDF Editor to version 11.0.1 or later to mitigate the risk of exploitation. Additionally, exercise caution while interacting with PDF files from untrusted sources.

Long-Term Security Practices

To enhance overall security, consider implementing file integrity monitoring, restricting access to sensitive files, and educating users on safe PDF handling practices.

Patching and Updates

Regularly check for security updates from Foxit Software and apply patches promptly to address known vulnerabilities and protect systems from potential threats.