CVE-2021-28686 Explained : Impact and Mitigation

AsIO2_64.sys and AsIO2_32.sys in ASUS GPUTweak II before 2.3.0.3 allow low-privileged users to trigger a stack-based buffer overflow, potentially leading to Denial of Service via a DeviceIoControl.

Understanding CVE-2021-28686

This CVE relates to a vulnerability in ASUS GPUTweak II that could be exploited by low-privileged users.

What is CVE-2021-28686?

CVE-2021-28686 involves a stack-based buffer overflow in ASUS GPUTweak II, specifically in the AsIO2_64.sys and AsIO2_32.sys components.

The Impact of CVE-2021-28686

The vulnerability allows low-privileged users to exploit the buffer overflow, leading to potential Denial of Service attacks through DeviceIoControl.

Technical Details of CVE-2021-28686

This section provides more detailed information regarding the vulnerability.

Vulnerability Description

The vulnerability in ASUS GPUTweak II before version 2.3.0.3 allows unauthorized users to trigger a stack-based buffer overflow.

Affected Systems and Versions

All versions of ASUS GPUTweak II before 2.3.0.3 are affected by this vulnerability.

Exploitation Mechanism

By exploiting the stack-based buffer overflow in AsIO2_64.sys and AsIO2_32.sys, low-privileged users can abuse DeviceIoControl to initiate a Denial of Service attack.

Mitigation and Prevention

To address CVE-2021-28686, users and organizations should take immediate action and implement long-term security measures.

Immediate Steps to Take

Users should update ASUS GPUTweak II to the latest version (2.3.0.3) to mitigate the vulnerability. Restricting access to the software can also help prevent exploitation.

Long-Term Security Practices

Maintaining regular software updates and security patches is crucial to safeguard systems against similar vulnerabilities in the future. Implementing least privilege access can limit the impact of potential exploits.

Patching and Updates

Regularly monitor for security advisories from ASUS and apply patches promptly to ensure system security.