CVE-2021-31465 : What You Need to Know

A critical vulnerability has been identified in Foxit Reader version 10.1.3.37598, tracked as CVE-2021-31465. This security flaw allows remote attackers to execute arbitrary code on affected systems. User interaction is required, making it crucial for users to be cautious while visiting websites or opening files. Understanding the details, impact, and mitigation strategies is essential.

Understanding CVE-2021-31465

CVE-2021-31465 is a high-severity vulnerability discovered in Foxit Reader 10.1.3.37598. The issue stems from improper handling of U3D objects in PDF files, leading to the execution of malicious code by attackers.

What is CVE-2021-31465?

This vulnerability in Foxit Reader enables remote attackers to run arbitrary code on vulnerable systems. By exploiting the lack of validation in user-supplied data, attackers can trigger code execution within the current process.

The Impact of CVE-2021-31465

The CVSS base score of 7.8 indicates a high-severity impact. With no privileges required for the attack, confidentiality, integrity, and availability of systems are at significant risk, emphasizing the critical nature of this vulnerability.

Technical Details of CVE-2021-31465

CVE-2021-31465 is categorized under CWE-787, specifically an 'Out-of-bounds Write' vulnerability. The attack complexity is low, but the impact on availability, confidentiality, and integrity are marked as high.

Vulnerability Description

The vulnerability arises due to insufficient validation of user-supplied data, allowing attackers to write beyond the allocated data structure.

Affected Systems and Versions

Foxit Reader version 10.1.3.37598 is confirmed to be impacted by this vulnerability.

Exploitation Mechanism

To exploit CVE-2021-31465, users must interact with malicious content like visiting a corrupted webpage or opening a malicious file, enabling attackers to execute arbitrary code.

Mitigation and Prevention

It is crucial to take immediate steps to safeguard systems and adopt long-term security measures to prevent such vulnerabilities.

Immediate Steps to Take

Users are advised to refrain from interacting with unknown or suspicious links, files, and websites to minimize exposure to potential risks.

Long-Term Security Practices

Regular security updates, secure browsing practices, and cautious handling of files from untrusted sources are essential for maintaining system security.

Patching and Updates

Foxit users should promptly install security patches provided by the vendor to mitigate the risk posed by CVE-2021-31465.