VirtualBox

source: vbox/trunk/src/VBox/HostDrivers/Support/win/SUPHardenedVerify-win.h@ 67954

Last change on this file since 67954 was 66525, checked in by vboxsync, 7 years ago

Windows hardening: bugref:8750: blacklist scrobj.dll
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1/* $Id: SUPHardenedVerify-win.h 66525 2017-04-12 10:48:30Z vboxsync $ */
2/** @file
3 * VirtualBox Support Library/Driver - Hardened Verification, Windows.
4 */
5
6/*
7 * Copyright (C) 2006-2016 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * The contents of this file may alternatively be used under the terms
18 * of the Common Development and Distribution License Version 1.0
19 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20 * VirtualBox OSE distribution, in which case the provisions of the
21 * CDDL are applicable instead of those of the GPL.
22 *
23 * You may elect to license modified versions of this file under the
24 * terms and conditions of either the GPL or the CDDL or both.
25 */
26
27#ifndef ___win_SUPHardenedVerify_win_h
28#define ___win_SUPHardenedVerify_win_h
29
30#include <iprt/types.h>
31#include <iprt/crypto/x509.h>
32#ifndef SUP_CERTIFICATES_ONLY
33# ifdef RT_OS_WINDOWS
34# include <iprt/ldr.h>
35# endif
36#endif
37
38
39RT_C_DECLS_BEGIN
40
41#ifndef SUP_CERTIFICATES_ONLY
42# ifdef RT_OS_WINDOWS
43DECLHIDDEN(int) supHardenedWinInitImageVerifier(PRTERRINFO pErrInfo);
44DECLHIDDEN(void) supHardenedWinTermImageVerifier(void);
45DECLHIDDEN(void) supR3HardenedWinVerifyCacheScheduleImports(RTLDRMOD hLdrMod, PCRTUTF16 pwszName);
46DECLHIDDEN(void) supR3HardenedWinVerifyCachePreload(PCRTUTF16 pwszName);
47
48
49typedef enum SUPHARDNTVPKIND
50{
51 SUPHARDNTVPKIND_VERIFY_ONLY = 1,
52 SUPHARDNTVPKIND_CHILD_PURIFICATION,
53 SUPHARDNTVPKIND_SELF_PURIFICATION,
54 SUPHARDNTVPKIND_32BIT_HACK = 0x7fffffff
55} SUPHARDNTVPKIND;
56/** @name SUPHARDNTVP_F_XXX - Flags for supHardenedWinVerifyProcess
57 * @{ */
58/** Replace unwanted executable memory allocations with a new one that's filled
59 * with a safe read-write copy (default is just to free it).
60 *
61 * This is one way we attempt to work around buggy protection software that
62 * either result in host BSOD or VBox application malfunction. Here the current
63 * shit list:
64 * - Trend Micro's data protection software includes a buggy driver called
65 * sakfile.sys that has been observed crashing accessing user memory that we
66 * probably freed. I'd love to report this to Trend Micro, but unfortunately
67 * they doesn't advertise (or have?) an email address for reporting security
68 * vulnerabilities in the their software. Having wasted time looking and not
69 * very sorry for having to disclosing the bug here.
70 * - Maybe one more.
71 */
72#define SUPHARDNTVP_F_EXEC_ALLOC_REPLACE_WITH_RW RT_BIT_32(0)
73/** @} */
74DECLHIDDEN(int) supHardenedWinVerifyProcess(HANDLE hProcess, HANDLE hThread, SUPHARDNTVPKIND enmKind, uint32_t fFlags,
75 uint32_t *pcFixes, PRTERRINFO pErrInfo);
76DECLHIDDEN(int) supHardNtVpThread(HANDLE hProcess, HANDLE hThread, PRTERRINFO pErrInfo);
77DECLHIDDEN(int) supHardNtVpDebugger(HANDLE hProcess, PRTERRINFO pErrInfo);
78
79DECLHIDDEN(bool) supHardViUtf16PathIsEqualEx(PCRTUTF16 pawcLeft, size_t cwcLeft, const char *pszRight);
80DECLHIDDEN(bool) supHardViUniStrPathStartsWithUniStr(UNICODE_STRING const *pUniStrLeft,
81 UNICODE_STRING const *pUniStrRight, bool fCheckSlash);
82DECLHIDDEN(bool) supHardViUtf16PathStartsWithEx(PCRTUTF16 pwszLeft, uint32_t cwcLeft,
83 PCRTUTF16 pwszRight, uint32_t cwcRight, bool fCheckSlash);
84DECLHIDDEN(bool) supHardViIsAppPatchDir(PCRTUTF16 pwszPath, uint32_t cwcName);
85
86
87/**
88 * SUP image verifier loader reader instance.
89 */
90typedef struct SUPHNTVIRDR
91{
92 /** The core reader structure. */
93 RTLDRREADER Core;
94 /** The file handle. */
95 HANDLE hFile;
96 /** Handle to event sempahore in case we're force to deal with asynchronous
97 * I/O. */
98 HANDLE hEvent;
99 /** Current file offset. */
100 RTFOFF off;
101 /** The file size. */
102 RTFOFF cbFile;
103 /** Flags for the verification callback, SUPHNTVI_F_XXX. */
104 uint32_t fFlags;
105 /** The executable timstamp in second since unix epoch. */
106 uint64_t uTimestamp;
107 /** Log name. */
108 char szFilename[1];
109} SUPHNTVIRDR;
110/** Pointer to an SUP image verifier loader reader instance. */
111typedef SUPHNTVIRDR *PSUPHNTVIRDR;
112DECLHIDDEN(int) supHardNtViRdrCreate(HANDLE hFile, PCRTUTF16 pwszName, uint32_t fFlags, PSUPHNTVIRDR *ppNtViRdr);
113DECLHIDDEN(bool) supHardenedWinIsWinVerifyTrustCallable(void);
114DECLHIDDEN(int) supHardenedWinVerifyImageTrust(HANDLE hFile, PCRTUTF16 pwszName, uint32_t fFlags, int rc,
115 bool *pfWinVerifyTrust, PRTERRINFO pErrInfo);
116DECLHIDDEN(int) supHardenedWinVerifyImageByHandle(HANDLE hFile, PCRTUTF16 pwszName, uint32_t fFlags, bool fAvoidWinVerifyTrust,
117 bool *pfWinVerifyTrust, PRTERRINFO pErrInfo);
118DECLHIDDEN(int) supHardenedWinVerifyImageByHandleNoName(HANDLE hFile, uint32_t fFlags, PRTERRINFO pErrInfo);
119DECLHIDDEN(int) supHardenedWinVerifyImageByLdrMod(RTLDRMOD hLdrMod, PCRTUTF16 pwszName, PSUPHNTVIRDR pNtViRdr,
120 bool fAvoidWinVerifyTrust, bool *pfWinVerifyTrust, PRTERRINFO pErrInfo);
121/** @name SUPHNTVI_F_XXX - Flags for supHardenedWinVerifyImageByHandle.
122 * @{ */
123/** The signing certificate must be the same as the one the VirtualBox build
124 * was signed with. */
125# define SUPHNTVI_F_REQUIRE_BUILD_CERT RT_BIT(0)
126/** Require kernel code signing level. */
127# define SUPHNTVI_F_REQUIRE_KERNEL_CODE_SIGNING RT_BIT(1)
128/** Require the image to force the memory mapper to do signature checking. */
129# define SUPHNTVI_F_REQUIRE_SIGNATURE_ENFORCEMENT RT_BIT(2)
130/** Whether to allow image verification by catalog file. */
131# define SUPHNTVI_F_ALLOW_CAT_FILE_VERIFICATION RT_BIT(3)
132/** The file owner must be TrustedInstaller on Vista+. */
133# define SUPHNTVI_F_TRUSTED_INSTALLER_OWNER RT_BIT(4)
134/** Ignore the image architecture (otherwise it must match the verification
135 * code). Used with resource images and such. */
136# define SUPHNTVI_F_IGNORE_ARCHITECTURE RT_BIT(30)
137/** Raw-mode context image, always 32-bit. */
138# define SUPHNTVI_F_RC_IMAGE RT_BIT(31)
139/** @} */
140
141/* Array in SUPHardenedVerifyImage-win.cpp */
142extern const RTSTRTUPLE g_aSupNtViBlacklistedDlls[];
143
144/**
145 * Loader cache entry.
146 *
147 * This is for avoiding loading and signature checking a file multiple times,
148 * due to multiple passes thru the process validation code (and syscall import
149 * code of NTDLL).
150 */
151typedef struct SUPHNTLDRCACHEENTRY
152{
153 /** The file name (from g_apszSupNtVpAllowedDlls or
154 * g_apszSupNtVpAllowedVmExes). */
155 const char *pszName;
156 /** Load module associated with the image during content verfication. */
157 RTLDRMOD hLdrMod;
158 /** The file reader. */
159 PSUPHNTVIRDR pNtViRdr;
160 /** The module file handle, if we've opened it.
161 * (pNtviRdr does not close the file handle on destruction.) */
162 HANDLE hFile;
163 /** Bits buffer. */
164 uint8_t *pbBits;
165 /** Set if verified. */
166 bool fVerified;
167 /** Whether we've got valid cacheable image bit.s */
168 bool fValidBits;
169 /** The image base address. */
170 uintptr_t uImageBase;
171} SUPHNTLDRCACHEENTRY;
172/** Pointer to a loader cache entry. */
173typedef SUPHNTLDRCACHEENTRY *PSUPHNTLDRCACHEENTRY;
174DECLHIDDEN(int) supHardNtLdrCacheOpen(const char *pszName, PSUPHNTLDRCACHEENTRY *ppEntry, PRTERRINFO pErrInfo);
175DECLHIDDEN(int) supHardNtLdrCacheEntryVerify(PSUPHNTLDRCACHEENTRY pEntry, PCRTUTF16 pwszName, PRTERRINFO pErrInfo);
176DECLHIDDEN(int) supHardNtLdrCacheEntryGetBits(PSUPHNTLDRCACHEENTRY pEntry, uint8_t **ppbBits, RTLDRADDR uBaseAddress,
177 PFNRTLDRIMPORT pfnGetImport, void *pvUser, PRTERRINFO pErrInfo);
178
179
180/** Which directory under the system root to get. */
181typedef enum SUPHARDNTSYSROOTDIR
182{
183 kSupHardNtSysRootDir_System32 = 0,
184 kSupHardNtSysRootDir_WinSxS,
185} SUPHARDNTSYSROOTDIR;
186
187DECLHIDDEN(int) supHardNtGetSystemRootDir(void *pvBuf, uint32_t cbBuf, SUPHARDNTSYSROOTDIR enmDir, PRTERRINFO pErrInfo);
188
189# ifndef SUPHNTVI_NO_NT_STUFF
190
191/** Typical system root directory buffer. */
192typedef struct SUPSYSROOTDIRBUF
193{
194 UNICODE_STRING UniStr;
195 WCHAR awcBuffer[260];
196} SUPSYSROOTDIRBUF;
197extern SUPSYSROOTDIRBUF g_System32NtPath;
198extern SUPSYSROOTDIRBUF g_WinSxSNtPath;
199#if defined(IN_RING3) && !defined(VBOX_PERMIT_EVEN_MORE)
200extern SUPSYSROOTDIRBUF g_ProgramFilesNtPath;
201extern SUPSYSROOTDIRBUF g_CommonFilesNtPath;
202# if ARCH_BITS == 64
203extern SUPSYSROOTDIRBUF g_ProgramFilesX86NtPath;
204extern SUPSYSROOTDIRBUF g_CommonFilesX86NtPath;
205# endif
206#endif /* IN_RING3 && !VBOX_PERMIT_EVEN_MORE */
207extern SUPSYSROOTDIRBUF g_SupLibHardenedExeNtPath;
208extern SUPSYSROOTDIRBUF g_SupLibHardenedAppBinNtPath;
209
210# ifdef IN_RING0
211/** Pointer to NtQueryVirtualMemory. */
212typedef NTSTATUS (NTAPI *PFNNTQUERYVIRTUALMEMORY)(HANDLE, void const *, MEMORY_INFORMATION_CLASS, PVOID, SIZE_T, PSIZE_T);
213extern PFNNTQUERYVIRTUALMEMORY g_pfnNtQueryVirtualMemory;
214# endif
215
216# endif /* SUPHNTVI_NO_NT_STUFF */
217
218/** Creates a combined NT version number for simple comparisons. */
219#define SUP_MAKE_NT_VER_COMBINED(a_uMajor, a_uMinor, a_uBuild, a_uSpMajor, a_uSpMinor) \
220 ( ((uint32_t)((a_uMajor) & UINT32_C(0xf)) << 28) \
221 | ((uint32_t)((a_uMinor) & UINT32_C(0xf)) << 24) \
222 | ((uint32_t)((a_uBuild) & UINT32_C(0xffff)) << 8) \
223 | ((uint32_t)((a_uSpMajor) & UINT32_C(0xf)) << 4) \
224 | (uint32_t)((a_uSpMinor) & UINT32_C(0xf)) )
225/** Simple version of SUP_MAKE_NT_VER_COMBINED. */
226#define SUP_MAKE_NT_VER_SIMPLE(a_uMajor, a_uMinor) SUP_MAKE_NT_VER_COMBINED(a_uMajor, a_uMinor, 0, 0, 0)
227extern uint32_t g_uNtVerCombined;
228
229/** @name NT version constants for less-than checks.
230 * @{ */
231/** Combined NT version number for XP. */
232#define SUP_NT_VER_XP SUP_MAKE_NT_VER_SIMPLE(5,1)
233/** Combined NT version number for Windows server 2003 & XP64. */
234#define SUP_NT_VER_W2K3 SUP_MAKE_NT_VER_SIMPLE(5,2)
235/** Combined NT version number for Vista. */
236#define SUP_NT_VER_VISTA SUP_MAKE_NT_VER_SIMPLE(6,0)
237/** Combined NT version number for Vista with SP1. */
238#define SUP_NT_VER_VISTA_SP1 SUP_MAKE_NT_VER_COMBINED(6,0,6001,1,0)
239/** Combined NT version number for Windows 7. */
240#define SUP_NT_VER_W70 SUP_MAKE_NT_VER_SIMPLE(6,1)
241/** Combined NT version number for Windows 8.0. */
242#define SUP_NT_VER_W80 SUP_MAKE_NT_VER_SIMPLE(6,2)
243/** Combined NT version number for Windows 8.1. */
244#define SUP_NT_VER_W81 SUP_MAKE_NT_VER_SIMPLE(6,3)
245/** @} */
246
247# endif
248
249# ifndef IN_SUP_HARDENED_R3
250# include <iprt/mem.h>
251# include <iprt/string.h>
252
253# define suplibHardenedMemComp memcmp
254# define suplibHardenedMemCopy memcpy
255# define suplibHardenedMemSet memset
256# define suplibHardenedStrCopy strcpy
257# define suplibHardenedStrLen strlen
258# define suplibHardenedStrCat strcat
259# define suplibHardenedStrCmp strcmp
260# define suplibHardenedStrNCmp strncmp
261# else /* IN_SUP_HARDENED_R3 */
262# include <iprt/mem.h>
263# if 0
264# define memcmp suplibHardenedMemComp
265# define memcpy suplibHardenedMemCopy
266# define memset suplibHardenedMemSet
267# define strcpy suplibHardenedStrCopy
268# define strlen suplibHardenedStrLen
269# define strcat suplibHardenedStrCat
270# define strcmp suplibHardenedStrCmp
271# define strncmp suplibHardenedStrNCmp
272# endif
273# endif /* IN_SUP_HARDENED_R3 */
274
275#endif /* SUP_CERTIFICATES_ONLY */
276
277RT_C_DECLS_END
278
279#endif
280
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