CVE-2021-36922 : Vulnerability Insights and Analysis

RtsUpx.sys in Realtek RtsUpx USB Utility Driver for Camera/Hub/Audio through 1.14.0.0 allows unauthorized access to USB devices, leading to Escalation of Privileges, Denial of Service, Code Execution, and Information Disclosure.

Understanding CVE-2021-36922

This section provides an overview of the vulnerability and its impact.

What is CVE-2021-36922?

CVE-2021-36922 involves the RtsUpx.sys driver in Realtek RtsUpx USB Utility, allowing local low-privileged users to gain unauthorized access to USB devices through crafted Device IO Control packets.

The Impact of CVE-2021-36922

The vulnerability permits attackers to escalate privileges, disrupt services, execute arbitrary code, and access sensitive information on affected devices.

Technical Details of CVE-2021-36922

Explore more about the technical aspects of CVE-2021-36922 in this section.

Vulnerability Description

RtsUpx.sys in Realtek RtsUpx USB Utility Driver enables unauthorized access to USB devices through specially crafted IO Control packets.

Affected Systems and Versions

The vulnerability affects Realtek RtsUpx USB Utility Driver for Camera/Hub/Audio versions up to 1.14.0.0.

Exploitation Mechanism

Attackers exploit this vulnerability by sending malicious Device IO Control packets to gain unauthorized access to USB devices.

Mitigation and Prevention

Find out how to mitigate the risks associated with CVE-2021-36922 and prevent potential exploits.

Immediate Steps to Take

Disable or uninstall the affected Realtek RtsUpx USB Utility Driver to mitigate the vulnerability.

Long-Term Security Practices

Regularly update systems and drivers, implement the principle of least privilege, and monitor USB device connections.

Patching and Updates

Check for security advisories and patches from Realtek to address CVE-2021-36922 and keep systems up to date.