PassMark PerformanceTest before 11.1 build 1012, BurnInTest before 11.1 build 1000, and OSForensics before 11.1 build 1016 contain an improper access control vulnerability in the DirectIo64.sys kernel driver that allows unprivileged local users to perform privileged hardware operations by opening a handle to the device object created without a security descriptor. Attackers can issue IOCTLs through the permissive default Windows ACL applied to the device to access restricted hardware operations regardless of privilege or integrity level.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 6
https://dkom.dev/posts/directio64-disclosure/
disclosure@vulncheck.com
https://github.com/floppywiggler/directio64-disclosure
disclosure@vulncheck.com
https://www.osforensics.com/whats-new.html
disclosure@vulncheck.com
https://www.passmark.com/products/burnintest/history.php
disclosure@vulncheck.com
https://www.passmark.com/products/performancetest/history.php
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/passmark-performancetest-burnintest-and-os…
disclosure@vulncheck.com