An elevation of privilege vulnerability exists when the DirectX Graphics Kernel (DXGKRNL) driver improperly handles objects in memory, aka DirectX Graphics Kernel Elevation of Privilege Vulnerability. This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server 2012, Windows Server 2019, Windows Server 2016, Windows 8.1, Windows 10, Windows 10 Servers.
Weakness
The product does not release or incorrectly releases a resource before it is made available for re-use.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Windows_10 | Microsoft | - (including) | - (including) |
| Windows_10 | Microsoft | 1607 (including) | 1607 (including) |
| Windows_10 | Microsoft | 1703 (including) | 1703 (including) |
| Windows_10 | Microsoft | 1709 (including) | 1709 (including) |
| Windows_10 | Microsoft | 1803 (including) | 1803 (including) |
| Windows_10 | Microsoft | 1809 (including) | 1809 (including) |
| Windows_7 | Microsoft | –sp1 (including) | –sp1 (including) |
| Windows_8.1 | Microsoft | * | * |
| Windows_rt_8.1 | Microsoft | - (including) | - (including) |
| Windows_server_2012 | Microsoft | - (including) | - (including) |
| Windows_server_2012 | Microsoft | r2 (including) | r2 (including) |
| Windows_server_2016 | Microsoft | - (including) | - (including) |
| Windows_server_2016 | Microsoft | 1709 (including) | 1709 (including) |
| Windows_server_2016 | Microsoft | 1803 (including) | 1803 (including) |
| Windows_server_2019 | Microsoft | - (including) | - (including) |
Potential Mitigations
- Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- For example, languages such as Java, Ruby, and Lisp perform automatic garbage collection that releases memory for objects that have been deallocated.
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/125.html
- https://cwe.mitre.org/data/definitions/130.html
- https://cwe.mitre.org/data/definitions/131.html
- https://cwe.mitre.org/data/definitions/494.html
- https://cwe.mitre.org/data/definitions/495.html
- https://cwe.mitre.org/data/definitions/496.html
- https://cwe.mitre.org/data/definitions/666.html
References
- http://www.securityfocus.com/bid/105500
- http://www.securitytracker.com/id/1041823
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8484
- http://www.securityfocus.com/bid/105500
- http://www.securitytracker.com/id/1041823
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8484