CVE-2021-34803 : Security Advisory and Response

TeamViewer before version 14.7.48644 on Windows is affected by a vulnerability that allows the loading of untrusted DLLs in specific scenarios.

Understanding CVE-2021-34803

This CVE pertains to a specific issue in TeamViewer on Windows systems.

What is CVE-2021-34803?

The vulnerability in TeamViewer before version 14.7.48644 on Windows allows the loading of untrusted DLLs under certain conditions.

The Impact of CVE-2021-34803

Exploitation of this vulnerability may lead to unauthorized access or other malicious actions on the affected Windows systems.

Technical Details of CVE-2021-34803

This section covers the technical aspects of the CVE.

Vulnerability Description

TeamViewer versions before 14.7.48644 on Windows are susceptible to an issue that enables the loading of untrusted DLL files.

Affected Systems and Versions

All Windows systems running TeamViewer versions prior to 14.7.48644 are impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit this weakness by tricking users into loading a specially crafted DLL file, potentially leading to unauthorized access.

Mitigation and Prevention

Below are the steps to mitigate and prevent exploitation of CVE-2021-34803.

Immediate Steps to Take

Users should update TeamViewer to version 14.7.48644 or later to prevent the loading of untrusted DLLs on Windows.

Long-Term Security Practices

Implement secure coding practices, conduct regular security audits, and educate users on the risks of loading untrusted DLL files.

Patching and Updates

Regularly monitor for software updates from TeamViewer and apply patches promptly to protect systems from known vulnerabilities.