CVE-2021-31466 Explained : Impact and Mitigation

This CVE-2021-31466 article provides an in-depth analysis of a vulnerability affecting Foxit Reader version 10.1.3.37598, allowing remote attackers to execute arbitrary code. The impact, technical details, mitigation steps, and prevention methods are discussed below.

Understanding CVE-2021-31466

CVE-2021-31466 is a vulnerability in Foxit Reader 10.1.3.37598 that enables remote attackers to execute arbitrary code by exploiting a flaw in handling U3D objects in PDF files. The issue arises from insufficient validation of user-supplied data.

What is CVE-2021-31466?

This vulnerability permits attackers to run malicious code on affected Foxit Reader installations. By enticing victims to interact with a malicious file or webpage, attackers trigger the flaw, allowing code execution in the current process context.

The Impact of CVE-2021-31466

The impact of CVE-2021-31466 is deemed high, with a CVSS base score of 7.8. The confidentiality, integrity, and availability of the system are all at risk, requiring user interaction for exploitation.

Technical Details of CVE-2021-31466

The vulnerability falls under CWE-125 (Out-of-bounds Read) and is characterized by a low attack complexity and vector. Attackers do not need prior privileges for exploitation but require user interaction.

Vulnerability Description

The flaw allows remote attackers to execute arbitrary code by exploiting the mishandling of U3D objects in PDF files due to inadequate validation of user inputs.

Affected Systems and Versions

Foxit Reader version 10.1.3.37598 is affected by this vulnerability, leaving installations of this specific version susceptible to remote code execution.

Exploitation Mechanism

Attackers can exploit this vulnerability by tricking users into interacting with malicious content, such as visiting a compromised website or opening a malicious file.

Mitigation and Prevention

Taking immediate measures and implementing long-term security practices are crucial to mitigating the risks associated with CVE-2021-31466.

Immediate Steps to Take

Users should refrain from accessing untrusted websites or opening suspicious files to prevent exploitation. It is advisable to update Foxit Reader to the latest version and apply patches promptly.

Long-Term Security Practices

Practicing safe browsing habits, maintaining up-to-date security software, and educating users on cybersecurity best practices are essential for long-term protection against such vulnerabilities.

Patching and Updates

Regularly checking for updates from Foxit and applying patches promptly is critical in addressing known security vulnerabilities and safeguarding systems.