CVE-2021-44852 : Vulnerability Insights and Analysis

An issue was discovered in BS_RCIO64.sys in Biostar RACING GT Evo 2.1.1905.1700. A low-integrity process can open the driver's device object and issue IOCTLs to read or write to arbitrary physical memory locations (or call an arbitrary address), leading to execution of arbitrary code. This is associated with 0x226040, 0x226044, and 0x226000.

Understanding CVE-2021-44852

What is CVE-2021-44852?

CVE-2021-44852 is a vulnerability found in BS_RCIO64.sys in Biostar RACING GT Evo 2.1.1905.1700, where a low-integrity process can manipulate the driver's device object, potentially leading to arbitrary code execution.

The Impact of CVE-2021-44852

This vulnerability allows malicious actors to execute arbitrary code by leveraging the driver's device object, posing a significant security risk to affected systems.

Technical Details of CVE-2021-44852

Vulnerability Description

The issue resides in BS_RCIO64.sys in Biostar RACING GT Evo 2.1.1905.1700
Low-integrity processes can access the driver's device object and perform IOCTLs
Allows reading or writing to arbitrary physical memory locations or calling arbitrary addresses

Affected Systems and Versions

Product: Biostar RACING GT Evo 2.1.1905.1700
Vendor: Biostar
Versions: All versions are affected

Exploitation Mechanism

Attackers can manipulate the driver's device object through IOCTLs
Exploitation may lead to unauthorized access to memory locations or arbitrary code execution

Mitigation and Prevention

Immediate Steps to Take

Apply security patches provided by the vendor promptly
Monitor system logs for any unusual activities
Implement strict access control policies

Long-Term Security Practices

Conduct regular security assessments and audits
Keep systems updated with the latest security patches
Train employees on security best practices

Patching and Updates

Biostar RACING GT Evo users should apply patches released by the vendor to address this vulnerability