CVE-2017-15303 : Security Advisory and Response

CPUID CPU-Z before version 1.43 is vulnerable to an arbitrary memory write exploit that allows unauthorized programs to escalate privileges by making a specific call to the kernel-mode driver.

Understanding CVE-2017-15303

Prior to version 1.43 of CPUID CPU-Z, a potential vulnerability exists where an unauthorized program executing on the same machine as CPU-Z can exploit an arbitrary memory write. This exploit allows for the direct escalation of privileges by making an ioctl 0x9C402430 call to the kernel-mode driver, such as cpuz141_x64.sys for version 1.41.

What is CVE-2017-15303?

In CPUID CPU-Z before 1.43, there is an arbitrary memory write that results directly in elevation of privileges, because any program running on the local machine (while CPU-Z is running) can issue an ioctl 0x9C402430 call to the kernel-mode driver (e.g., cpuz141_x64.sys for version 1.41).

The Impact of CVE-2017-15303

Unauthorized programs can exploit the vulnerability to escalate privileges on the system.

Technical Details of CVE-2017-15303

CPUID CPU-Z version 1.43 vulnerability details:

Vulnerability Description

Unauthorized programs can perform an arbitrary memory write, leading to privilege escalation.

Affected Systems and Versions

Product: n/a
Vendor: n/a
Versions affected: n/a

Exploitation Mechanism

Unauthorized programs can exploit the vulnerability by issuing a specific call to the kernel-mode driver.

Mitigation and Prevention

Immediate Steps to Take:

Update CPUID CPU-Z to version 1.43 or newer.
Monitor system for any unauthorized activities.

Long-Term Security Practices:

Regularly update software and drivers to the latest versions.
Implement least privilege access controls.

Patching and Updates:

Apply security patches provided by CPUID promptly.