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edk2/0032-MdeModulePkg-Core-Create-Migrated-FV-Info-Hob-for-ca.patch
chenhuiying 70a7906583 fix Fix CVE-2019-11098 
Signed-off-by: chenhuiying <chenhuiying4@huawei.com>
2022-09-29 16:23:55 +08:00

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From 4b68cef04c70d8fd8a9bf745fc649c84d67531e8 Mon Sep 17 00:00:00 2001
From: Guomin Jiang <guomin.jiang@intel.com>
Date: Mon, 29 Jun 2020 13:52:02 +0800
Subject: [PATCH] MdeModulePkg/Core: Create Migrated FV Info Hob for
calculating hash (CVE-2019-11098)
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=1614
When we allocate pool to save the rebased PEIMs, the address will change
randomly, therefore the hash will change and result PCR0 change as well.
To avoid this, we save the raw PEIMs and use it to calculate hash.
The MigratedFvInfo HOB will never produce when
PcdMigrateTemporaryRamFirmwareVolumes is FALSE, because the PCD control
the total feature.
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Dandan Bi <dandan.bi@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Debkumar De <debkumar.de@intel.com>
Cc: Harry Han <harry.han@intel.com>
Cc: Catharine West <catharine.west@intel.com>
Signed-off-by: Guomin Jiang <guomin.jiang@intel.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
---
MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c | 28 +++++++++++++++++++
MdeModulePkg/Core/Pei/PeiMain.h | 1 +
MdeModulePkg/Core/Pei/PeiMain.inf | 1 +
MdeModulePkg/Include/Guid/MigratedFvInfo.h | 22 +++++++++++++++
MdeModulePkg/MdeModulePkg.dec | 3 ++
5 files changed, 55 insertions(+)
create mode 100644 MdeModulePkg/Include/Guid/MigratedFvInfo.h
diff --git a/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c b/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c
index 5bc0f8674d..b9a279ec73 100644
--- a/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c
+++ b/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c
@@ -1234,10 +1234,12 @@ EvacuateTempRam (
EFI_FIRMWARE_VOLUME_HEADER *FvHeader;
EFI_FIRMWARE_VOLUME_HEADER *ChildFvHeader;
EFI_FIRMWARE_VOLUME_HEADER *MigratedFvHeader;
+ EFI_FIRMWARE_VOLUME_HEADER *RawDataFvHeader;
EFI_FIRMWARE_VOLUME_HEADER *MigratedChildFvHeader;
PEI_CORE_FV_HANDLE PeiCoreFvHandle;
EFI_PEI_CORE_FV_LOCATION_PPI *PeiCoreFvLocationPpi;
+ EDKII_MIGRATED_FV_INFO MigratedFvInfo;
ASSERT (Private->PeiMemoryInstalled);
@@ -1274,6 +1276,9 @@ EvacuateTempRam (
(((EFI_PHYSICAL_ADDRESS)(UINTN) FvHeader + (FvHeader->FvLength - 1)) < Private->FreePhysicalMemoryTop)
)
) {
+ //
+ // Allocate page to save the rebased PEIMs, the PEIMs will get dispatched later.
+ //
Status = PeiServicesAllocatePages (
EfiBootServicesCode,
EFI_SIZE_TO_PAGES ((UINTN) FvHeader->FvLength),
@@ -1281,6 +1286,17 @@ EvacuateTempRam (
);
ASSERT_EFI_ERROR (Status);
+ //
+ // Allocate pool to save the raw PEIMs, which is used to keep consistent context across
+ // multiple boot and PCR0 will keep the same no matter if the address of allocated page is changed.
+ //
+ Status = PeiServicesAllocatePages (
+ EfiBootServicesCode,
+ EFI_SIZE_TO_PAGES ((UINTN) FvHeader->FvLength),
+ (EFI_PHYSICAL_ADDRESS *) &RawDataFvHeader
+ );
+ ASSERT_EFI_ERROR (Status);
+
DEBUG ((
DEBUG_VERBOSE,
" Migrating FV[%d] from 0x%08X to 0x%08X\n",
@@ -1289,7 +1305,19 @@ EvacuateTempRam (
(UINTN) MigratedFvHeader
));
+ //
+ // Copy the context to the rebased pages and raw pages, and create hob to save the
+ // information. The MigratedFvInfo HOB will never be produced when
+ // PcdMigrateTemporaryRamFirmwareVolumes is FALSE, because the PCD control the
+ // feature.
+ //
CopyMem (MigratedFvHeader, FvHeader, (UINTN) FvHeader->FvLength);
+ CopyMem (RawDataFvHeader, MigratedFvHeader, (UINTN) FvHeader->FvLength);
+ MigratedFvInfo.FvOrgBase = (UINT32) (UINTN) FvHeader;
+ MigratedFvInfo.FvNewBase = (UINT32) (UINTN) MigratedFvHeader;
+ MigratedFvInfo.FvDataBase = (UINT32) (UINTN) RawDataFvHeader;
+ MigratedFvInfo.FvLength = (UINT32) (UINTN) FvHeader->FvLength;
+ BuildGuidDataHob (&gEdkiiMigratedFvInfoGuid, &MigratedFvInfo, sizeof (MigratedFvInfo));
//
// Migrate any children for this FV now
diff --git a/MdeModulePkg/Core/Pei/PeiMain.h b/MdeModulePkg/Core/Pei/PeiMain.h
index 6d95a5d32c..c27e8fc33b 100644
--- a/MdeModulePkg/Core/Pei/PeiMain.h
+++ b/MdeModulePkg/Core/Pei/PeiMain.h
@@ -44,6 +44,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
#include <Guid/FirmwareFileSystem2.h>
#include <Guid/FirmwareFileSystem3.h>
#include <Guid/AprioriFileName.h>
+#include <Guid/MigratedFvInfo.h>
///
/// It is an FFS type extension used for PeiFindFileEx. It indicates current
diff --git a/MdeModulePkg/Core/Pei/PeiMain.inf b/MdeModulePkg/Core/Pei/PeiMain.inf
index 5b36d516b3..0cf357371a 100644
--- a/MdeModulePkg/Core/Pei/PeiMain.inf
+++ b/MdeModulePkg/Core/Pei/PeiMain.inf
@@ -77,6 +77,7 @@
## CONSUMES ## GUID # Used to compare with FV's file system GUID and get the FV's file system format
gEfiFirmwareFileSystem3Guid
gStatusCodeCallbackGuid
+ gEdkiiMigratedFvInfoGuid ## SOMETIMES_PRODUCES ## HOB
[Ppis]
gEfiPeiStatusCodePpiGuid ## SOMETIMES_CONSUMES # PeiReportStatusService is not ready if this PPI doesn't exist
diff --git a/MdeModulePkg/Include/Guid/MigratedFvInfo.h b/MdeModulePkg/Include/Guid/MigratedFvInfo.h
new file mode 100644
index 0000000000..061c17ed0e
--- /dev/null
+++ b/MdeModulePkg/Include/Guid/MigratedFvInfo.h
@@ -0,0 +1,22 @@
+/** @file
+ Migrated FV information
+
+Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef __EDKII_MIGRATED_FV_INFO_GUID_H__
+#define __EDKII_MIGRATED_FV_INFO_GUID_H__
+
+typedef struct {
+ UINT32 FvOrgBase; // original FV address
+ UINT32 FvNewBase; // new FV address
+ UINT32 FvDataBase; // original FV data
+ UINT32 FvLength; // Fv Length
+} EDKII_MIGRATED_FV_INFO;
+
+extern EFI_GUID gEdkiiMigratedFvInfoGuid;
+
+#endif // #ifndef __EDKII_MIGRATED_FV_INFO_GUID_H__
+
diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec
index 45874e9c82..d7572eedd1 100644
--- a/MdeModulePkg/MdeModulePkg.dec
+++ b/MdeModulePkg/MdeModulePkg.dec
@@ -389,6 +389,9 @@
## GUID indicates the capsule is to store Capsule On Disk file names.
gEdkiiCapsuleOnDiskNameGuid = { 0x98c80a4f, 0xe16b, 0x4d11, { 0x93, 0x9a, 0xab, 0xe5, 0x61, 0x26, 0x3, 0x30 } }
+ ## Include/Guid/MigratedFvInfo.h
+ gEdkiiMigratedFvInfoGuid = { 0xc1ab12f7, 0x74aa, 0x408d, { 0xa2, 0xf4, 0xc6, 0xce, 0xfd, 0x17, 0x98, 0x71 } }
+
[Ppis]
## Include/Ppi/AtaController.h
gPeiAtaControllerPpiGuid = { 0xa45e60d1, 0xc719, 0x44aa, { 0xb0, 0x7a, 0xaa, 0x77, 0x7f, 0x85, 0x90, 0x6d }}
--
2.27.0
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