Published: 11/02/2015 Updated: 15/05/2019
CVSS v2 Base Score: 1.9 | Impact Score: 2.9 | Exploitability Score: 3.4
VMScore: 195
Vector: AV:L/AC:M/Au:N/C:P/I:N/A:N

Vulnerability Summary

The CryptProtectMemory function in cng.sys (aka the Cryptography Next Generation driver) in the kernel-mode drivers in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1, when the CRYPTPROTECTMEMORY_SAME_LOGON option is used, does not check an impersonation token's level, which allows local users to bypass intended decryption restrictions by leveraging a service that (1) has a named-pipe planting vulnerability or (2) uses world-readable shared memory for encrypted data, aka "CNG Security Feature Bypass Vulnerability" or MSRC ID 20707.


// excpp /* Windows XP/2K3/VISTA/2K8/7 WM_SYSTIMER Kernel EoP CVE-2015-0003 March 2015 (Public Release: May 24, 2015) Tested on: x86: Win 7 SP1 | Win 2k3 SP2 | Win XP SP3 x64: Win 2k8 SP1 | Win 2k8 R2 SP1 Author: Skylake - skylake <at> mail <dot> com */ #include "exh" _ZwAllocateVirtualMemory ZwAllocateVirtualMemory; ...