CVE-2020-6101 Explained : Impact and Mitigation

An exploitable code execution vulnerability exists in the Shader functionality of AMD Radeon DirectX 11 Driver atidxx64.dll 26.20.15019.19000. An attacker can provide a specially crafted shader file to trigger this vulnerability, resulting in code execution. This vulnerability can be triggered from a HYPER-V guest using the RemoteFX feature, leading to executing the vulnerable code on the HYPER-V host (inside of the rdvgm.exe process). Theoretically, this vulnerability could also be triggered from a web browser (using webGL and webassembly).

Understanding CVE-2020-6101

This section provides insights into the nature and impact of the CVE-2020-6101 vulnerability.

What is CVE-2020-6101?

CVE-2020-6101 is an exploitable code execution vulnerability found in the Shader functionality of AMD Radeon DirectX 11 Driver atidxx64.dll 26.20.15019.19000.

The Impact of CVE-2020-6101

The vulnerability allows an attacker to execute arbitrary code by providing a specially crafted shader file. It can be exploited from a HYPER-V guest using RemoteFX or potentially from a web browser, posing a significant security risk.

Technical Details of CVE-2020-6101

This section delves into the technical aspects of the CVE-2020-6101 vulnerability.

Vulnerability Description

The vulnerability is categorized as an 'out of bounds write' issue, enabling unauthorized code execution through a manipulated shader file.

Affected Systems and Versions

Product: AMD
Version: AMD Radeon DirectX 11 Driver atidxx64.dll 26.20.15019.19000

Exploitation Mechanism

Attackers can exploit the vulnerability by providing a specially crafted shader file, triggering code execution.
The vulnerability can be exploited from a HYPER-V guest using RemoteFX or potentially from a web browser.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2020-6101.

Immediate Steps to Take

Apply security patches provided by AMD promptly.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update and patch all software and drivers.
Conduct security training for employees to raise awareness of potential threats.
Employ intrusion detection and prevention systems to enhance network security.
Consider implementing application whitelisting to restrict unauthorized software execution.
Stay informed about the latest security trends and vulnerabilities.

Patching and Updates

Stay informed about security advisories from AMD and apply patches as soon as they are released.
Regularly check for updates to ensure the system is protected against known vulnerabilities.