Description
PassMark PerformanceTest before 11.1 build 1012, BurnInTest before 11.1 build 1000, and OSForensics before 11.1 build 1016 contain a privilege escalation vulnerability in DirectIo64.sys that allows local users to issue arbitrary IN and OUT instructions to any x86 I/O port due to missing allowlist or port validation on exposed IOCTLs. Attackers can obtain a device handle and write to sensitive ports including the PS/2 controller port, CPU reset ports, CMOS configuration ports, and interrupt controller ports to cause an immediate system reset or other hardware-level manipulation from a standard user account.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| PassMark Software | PerformanceTest | < 11.1 build 1012 | 11.1 build 1012 |
| PassMark Software | BurnInTest | < 11.1 build 1000 | 11.1 build 1000 |
| PassMark Software | OSForensics | < 11.1 build 1016 | 11.1 build 1016 |
References
- Researcher Disclosure technical-description
- PerformanceTest Changelog release-notes patch
- BurnInTest Changelog release-notes patch
- OSForensics Changelog release-notes patch
- Technical Analysis and Decompiled Evidence technical-description
- https://www.vulncheck.com/advisories/passmark-performancetest-burnintest-and-osforensics-arbitrary-i-o-port-access-via-directio64-sys third-party-advisory