CVE-2021-44852 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

https://nephosec.com/biostar-exploit/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8