CVE-2021-31461 Explained : Impact and Mitigation

A critical vulnerability in Foxit Reader 10.1.1.37576 allows remote attackers to execute arbitrary code, posing a significant security risk for users.

Understanding CVE-2021-31461

This CVE pertains to a type confusion vulnerability in Foxit Reader, enabling attackers to run malicious code on affected systems. The exploit requires user interaction through visiting a malicious page or opening a corrupted file.

What is CVE-2021-31461?

This CVE discloses a flaw in how Foxit Reader handles app.media objects, lacking proper validation of user-supplied data. As a result, threat actors can exploit this weakness to achieve remote code execution.

The Impact of CVE-2021-31461

With a CVSS base score of 7.8, this vulnerability has a high impact on confidentiality, integrity, and availability. It requires no user privileges and can be exploited locally, emphasizing the urgency of mitigation.

Technical Details of CVE-2021-31461

This section covers specific technical aspects of the vulnerability to provide insight into its nature and potential risks.

Vulnerability Description

The vulnerability stems from a type confusion condition within Foxit Reader's handling of app.media objects. Inadequate data validation opens the door for attackers to execute arbitrary code.

Affected Systems and Versions

Foxit Reader 10.1.1.37576 is confirmed to be impacted by this CVE, creating a security concern for users of this specific version.

Exploitation Mechanism

To exploit this vulnerability, attackers must entice a user to interact with malicious content, such as visiting a compromised webpage or opening a corrupted file, triggering the execution of arbitrary code.

Mitigation and Prevention

Discover effective strategies to mitigate the risks associated with CVE-2021-31461 and safeguard your systems from potential threats.

Immediate Steps to Take

Users are advised to update Foxit Reader to a patched version immediately to eliminate the vulnerability and prevent exploitation. Additionally, exercise caution when accessing untrusted websites or opening unknown files.

Long-Term Security Practices

Implement robust security protocols, including regular software updates, secure browsing habits, and employee awareness training to mitigate the risks of future vulnerabilities.

Patching and Updates

Stay informed about security bulletins and patches released by Foxit to address CVE-2021-31461 promptly and ensure the continuous protection of your systems.