You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
285 lines
11 KiB
285 lines
11 KiB
From 808551c1cb2ac9dc9a6287cbc85b167aa9eb2d7e Mon Sep 17 00:00:00 2001
|
|
From: Jon Maloy <jmaloy@redhat.com>
|
|
Date: Wed, 7 Feb 2024 15:43:10 -0500
|
|
Subject: [PATCH 1/9] SecurityPkg: DxeTpm2MeasureBootLib: SECURITY PATCH 4118 -
|
|
CVE 2022-36764
|
|
|
|
RH-Author: Jon Maloy <jmaloy@redhat.com>
|
|
RH-MergeRequest: 53: SecurityPkg: DxeTpm2MeasureBootLib: SECURITY PATCH 4118 - CVE 2022-36764
|
|
RH-Jira: RHEL-21157
|
|
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
|
|
RH-Acked-by: Gerd Hoffmann <None>
|
|
RH-Commit: [1/5] 50edfd997d089549ac41b9592131ac1212fc3431
|
|
|
|
JIRA: https://issues.redhat.com/browse/RHEL-21157
|
|
CVE: CVE-2022-36764
|
|
Upstream: Merged
|
|
|
|
commit c7b27944218130cca3bbb20314ba5b88b5de4aa4
|
|
Author: Douglas Flick [MSFT] <doug.edk2@gmail.com>
|
|
Date: Fri Jan 12 02:16:04 2024 +0800
|
|
|
|
SecurityPkg: DxeTpm2MeasureBootLib: SECURITY PATCH 4118 - CVE 2022-36764
|
|
|
|
This commit contains the patch files and tests for DxeTpm2MeasureBootLib
|
|
CVE 2022-36764.
|
|
|
|
Cc: Jiewen Yao <jiewen.yao@intel.com>
|
|
|
|
Signed-off-by: Doug Flick [MSFT] <doug.edk2@gmail.com>
|
|
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
|
|
|
|
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
|
|
---
|
|
.../DxeTpm2MeasureBootLib.c | 12 ++--
|
|
.../DxeTpm2MeasureBootLibSanitization.c | 46 +++++++++++++-
|
|
.../DxeTpm2MeasureBootLibSanitization.h | 28 ++++++++-
|
|
.../DxeTpm2MeasureBootLibSanitizationTest.c | 60 ++++++++++++++++---
|
|
4 files changed, 131 insertions(+), 15 deletions(-)
|
|
|
|
diff --git a/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.c b/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.c
|
|
index 0475103d6e..714cc8e03e 100644
|
|
--- a/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.c
|
|
+++ b/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.c
|
|
@@ -378,7 +378,6 @@ Exit:
|
|
@retval EFI_OUT_OF_RESOURCES No enough resource to measure image.
|
|
@retval EFI_UNSUPPORTED ImageType is unsupported or PE image is mal-format.
|
|
@retval other error value
|
|
-
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
@@ -405,6 +404,7 @@ Tcg2MeasurePeImage (
|
|
Status = EFI_UNSUPPORTED;
|
|
ImageLoad = NULL;
|
|
EventPtr = NULL;
|
|
+ Tcg2Event = NULL;
|
|
|
|
Tcg2Protocol = MeasureBootProtocols->Tcg2Protocol;
|
|
CcProtocol = MeasureBootProtocols->CcProtocol;
|
|
@@ -420,18 +420,22 @@ Tcg2MeasurePeImage (
|
|
}
|
|
|
|
FilePathSize = (UINT32)GetDevicePathSize (FilePath);
|
|
+ Status = SanitizePeImageEventSize (FilePathSize, &EventSize);
|
|
+ if (EFI_ERROR (Status)) {
|
|
+ return EFI_UNSUPPORTED;
|
|
+ }
|
|
|
|
//
|
|
// Determine destination PCR by BootPolicy
|
|
//
|
|
- EventSize = sizeof (*ImageLoad) - sizeof (ImageLoad->DevicePath) + FilePathSize;
|
|
- EventPtr = AllocateZeroPool (EventSize + sizeof (EFI_TCG2_EVENT) - sizeof (Tcg2Event->Event));
|
|
+ // from a malicious GPT disk partition
|
|
+ EventPtr = AllocateZeroPool (EventSize);
|
|
if (EventPtr == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
|
|
Tcg2Event = (EFI_TCG2_EVENT *)EventPtr;
|
|
- Tcg2Event->Size = EventSize + sizeof (EFI_TCG2_EVENT) - sizeof (Tcg2Event->Event);
|
|
+ Tcg2Event->Size = EventSize;
|
|
Tcg2Event->Header.HeaderSize = sizeof (EFI_TCG2_EVENT_HEADER);
|
|
Tcg2Event->Header.HeaderVersion = EFI_TCG2_EVENT_HEADER_VERSION;
|
|
ImageLoad = (EFI_IMAGE_LOAD_EVENT *)Tcg2Event->Event;
|
|
diff --git a/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLibSanitization.c b/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLibSanitization.c
|
|
index e2309655d3..2a4d52c6d5 100644
|
|
--- a/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLibSanitization.c
|
|
+++ b/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLibSanitization.c
|
|
@@ -151,7 +151,7 @@ SanitizeEfiPartitionTableHeader (
|
|
}
|
|
|
|
/**
|
|
- This function will validate that the allocation size from the primary header is sane
|
|
+ This function will validate that the allocation size from the primary header is sane
|
|
It will check the following:
|
|
- AllocationSize does not overflow
|
|
|
|
@@ -273,3 +273,47 @@ SanitizePrimaryHeaderGptEventSize (
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
+
|
|
+/**
|
|
+ This function will validate that the PeImage Event Size from the loaded image is sane
|
|
+ It will check the following:
|
|
+ - EventSize does not overflow
|
|
+
|
|
+ @param[in] FilePathSize - Size of the file path.
|
|
+ @param[out] EventSize - Pointer to the event size.
|
|
+
|
|
+ @retval EFI_SUCCESS
|
|
+ The event size is valid.
|
|
+
|
|
+ @retval EFI_OUT_OF_RESOURCES
|
|
+ Overflow would have occurred.
|
|
+
|
|
+ @retval EFI_INVALID_PARAMETER
|
|
+ One of the passed parameters was invalid.
|
|
+**/
|
|
+EFI_STATUS
|
|
+SanitizePeImageEventSize (
|
|
+ IN UINT32 FilePathSize,
|
|
+ OUT UINT32 *EventSize
|
|
+ )
|
|
+{
|
|
+ EFI_STATUS Status;
|
|
+
|
|
+ // Replacing logic:
|
|
+ // sizeof (*ImageLoad) - sizeof (ImageLoad->DevicePath) + FilePathSize;
|
|
+ Status = SafeUint32Add (OFFSET_OF (EFI_IMAGE_LOAD_EVENT, DevicePath), FilePathSize, EventSize);
|
|
+ if (EFI_ERROR (Status)) {
|
|
+ DEBUG ((DEBUG_ERROR, "EventSize would overflow!\n"));
|
|
+ return EFI_BAD_BUFFER_SIZE;
|
|
+ }
|
|
+
|
|
+ // Replacing logic:
|
|
+ // EventSize + sizeof (EFI_TCG2_EVENT) - sizeof (Tcg2Event->Event)
|
|
+ Status = SafeUint32Add (*EventSize, OFFSET_OF (EFI_TCG2_EVENT, Event), EventSize);
|
|
+ if (EFI_ERROR (Status)) {
|
|
+ DEBUG ((DEBUG_ERROR, "EventSize would overflow!\n"));
|
|
+ return EFI_BAD_BUFFER_SIZE;
|
|
+ }
|
|
+
|
|
+ return EFI_SUCCESS;
|
|
+}
|
|
diff --git a/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLibSanitization.h b/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLibSanitization.h
|
|
index 048b738987..8f72ba4240 100644
|
|
--- a/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLibSanitization.h
|
|
+++ b/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLibSanitization.h
|
|
@@ -9,6 +9,9 @@
|
|
Tcg2MeasureGptTable() function will receive untrusted GPT partition table, and parse
|
|
partition data carefully.
|
|
|
|
+ Tcg2MeasurePeImage() function will accept untrusted PE/COFF image and validate its
|
|
+ data structure within this image buffer before use.
|
|
+
|
|
Copyright (c) Microsoft Corporation.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
@@ -110,4 +113,27 @@ SanitizePrimaryHeaderGptEventSize (
|
|
OUT UINT32 *EventSize
|
|
);
|
|
|
|
-#endif // DXE_TPM2_MEASURE_BOOT_LIB_SANITATION_
|
|
+/**
|
|
+ This function will validate that the PeImage Event Size from the loaded image is sane
|
|
+ It will check the following:
|
|
+ - EventSize does not overflow
|
|
+
|
|
+ @param[in] FilePathSize - Size of the file path.
|
|
+ @param[out] EventSize - Pointer to the event size.
|
|
+
|
|
+ @retval EFI_SUCCESS
|
|
+ The event size is valid.
|
|
+
|
|
+ @retval EFI_OUT_OF_RESOURCES
|
|
+ Overflow would have occurred.
|
|
+
|
|
+ @retval EFI_INVALID_PARAMETER
|
|
+ One of the passed parameters was invalid.
|
|
+**/
|
|
+EFI_STATUS
|
|
+SanitizePeImageEventSize (
|
|
+ IN UINT32 FilePathSize,
|
|
+ OUT UINT32 *EventSize
|
|
+ );
|
|
+
|
|
+#endif // DXE_TPM2_MEASURE_BOOT_LIB_VALIDATION_
|
|
diff --git a/SecurityPkg/Library/DxeTpm2MeasureBootLib/InternalUnitTest/DxeTpm2MeasureBootLibSanitizationTest.c b/SecurityPkg/Library/DxeTpm2MeasureBootLib/InternalUnitTest/DxeTpm2MeasureBootLibSanitizationTest.c
|
|
index 3eb9763e3c..820e99aeb9 100644
|
|
--- a/SecurityPkg/Library/DxeTpm2MeasureBootLib/InternalUnitTest/DxeTpm2MeasureBootLibSanitizationTest.c
|
|
+++ b/SecurityPkg/Library/DxeTpm2MeasureBootLib/InternalUnitTest/DxeTpm2MeasureBootLibSanitizationTest.c
|
|
@@ -72,10 +72,10 @@ TestSanitizeEfiPartitionTableHeader (
|
|
PrimaryHeader.Header.Revision = DEFAULT_PRIMARY_TABLE_HEADER_REVISION;
|
|
PrimaryHeader.Header.HeaderSize = sizeof (EFI_PARTITION_TABLE_HEADER);
|
|
PrimaryHeader.MyLBA = 1;
|
|
- PrimaryHeader.AlternateLBA = 2;
|
|
- PrimaryHeader.FirstUsableLBA = 3;
|
|
- PrimaryHeader.LastUsableLBA = 4;
|
|
- PrimaryHeader.PartitionEntryLBA = 5;
|
|
+ PrimaryHeader.PartitionEntryLBA = 2;
|
|
+ PrimaryHeader.AlternateLBA = 3;
|
|
+ PrimaryHeader.FirstUsableLBA = 4;
|
|
+ PrimaryHeader.LastUsableLBA = 5;
|
|
PrimaryHeader.NumberOfPartitionEntries = DEFAULT_PRIMARY_TABLE_HEADER_NUMBER_OF_PARTITION_ENTRIES;
|
|
PrimaryHeader.SizeOfPartitionEntry = DEFAULT_PRIMARY_TABLE_HEADER_SIZE_OF_PARTITION_ENTRY;
|
|
PrimaryHeader.PartitionEntryArrayCRC32 = 0; // Purposely invalid
|
|
@@ -187,11 +187,6 @@ TestSanitizePrimaryHeaderGptEventSize (
|
|
EFI_STATUS Status;
|
|
EFI_PARTITION_TABLE_HEADER PrimaryHeader;
|
|
UINTN NumberOfPartition;
|
|
- EFI_GPT_DATA *GptData;
|
|
- EFI_TCG2_EVENT *Tcg2Event;
|
|
-
|
|
- Tcg2Event = NULL;
|
|
- GptData = NULL;
|
|
|
|
// Test that a normal PrimaryHeader passes validation
|
|
PrimaryHeader.NumberOfPartitionEntries = 5;
|
|
@@ -225,6 +220,52 @@ TestSanitizePrimaryHeaderGptEventSize (
|
|
return UNIT_TEST_PASSED;
|
|
}
|
|
|
|
+/**
|
|
+ This function tests the SanitizePeImageEventSize function.
|
|
+ It's intent is to test that the untrusted input from a file path when generating a
|
|
+ EFI_IMAGE_LOAD_EVENT structure will not cause an overflow when calculating
|
|
+ the event size when allocating space
|
|
+
|
|
+ @param[in] Context The unit test context.
|
|
+
|
|
+ @retval UNIT_TEST_PASSED The test passed.
|
|
+ @retval UNIT_TEST_ERROR_TEST_FAILED The test failed.
|
|
+**/
|
|
+UNIT_TEST_STATUS
|
|
+EFIAPI
|
|
+TestSanitizePeImageEventSize (
|
|
+ IN UNIT_TEST_CONTEXT Context
|
|
+ )
|
|
+{
|
|
+ UINT32 EventSize;
|
|
+ UINTN ExistingLogicEventSize;
|
|
+ UINT32 FilePathSize;
|
|
+ EFI_STATUS Status;
|
|
+
|
|
+ FilePathSize = 255;
|
|
+
|
|
+ // Test that a normal PE image passes validation
|
|
+ Status = SanitizePeImageEventSize (FilePathSize, &EventSize);
|
|
+ UT_ASSERT_EQUAL (Status, EFI_SUCCESS);
|
|
+
|
|
+ // Test that the event size is correct compared to the existing logic
|
|
+ ExistingLogicEventSize = OFFSET_OF (EFI_IMAGE_LOAD_EVENT, DevicePath) + FilePathSize;
|
|
+ ExistingLogicEventSize += OFFSET_OF (EFI_TCG2_EVENT, Event);
|
|
+
|
|
+ if (EventSize != ExistingLogicEventSize) {
|
|
+ UT_LOG_ERROR ("SanitizePeImageEventSize returned an incorrect event size. Expected %u, got %u\n", ExistingLogicEventSize, EventSize);
|
|
+ return UNIT_TEST_ERROR_TEST_FAILED;
|
|
+ }
|
|
+
|
|
+ // Test that the event size may not overflow
|
|
+ Status = SanitizePeImageEventSize (MAX_UINT32, &EventSize);
|
|
+ UT_ASSERT_EQUAL (Status, EFI_BAD_BUFFER_SIZE);
|
|
+
|
|
+ DEBUG ((DEBUG_INFO, "%a: Test passed\n", __func__));
|
|
+
|
|
+ return UNIT_TEST_PASSED;
|
|
+}
|
|
+
|
|
// *--------------------------------------------------------------------*
|
|
// * Unit Test Code Main Function
|
|
// *--------------------------------------------------------------------*
|
|
@@ -267,6 +308,7 @@ UefiTestMain (
|
|
AddTestCase (Tcg2MeasureBootLibValidationTestSuite, "Tests Validating EFI Partition Table", "Common.Tcg2MeasureBootLibValidation", TestSanitizeEfiPartitionTableHeader, NULL, NULL, NULL);
|
|
AddTestCase (Tcg2MeasureBootLibValidationTestSuite, "Tests Primary header gpt event checks for overflow", "Common.Tcg2MeasureBootLibValidation", TestSanitizePrimaryHeaderAllocationSize, NULL, NULL, NULL);
|
|
AddTestCase (Tcg2MeasureBootLibValidationTestSuite, "Tests Primary header allocation size checks for overflow", "Common.Tcg2MeasureBootLibValidation", TestSanitizePrimaryHeaderGptEventSize, NULL, NULL, NULL);
|
|
+ AddTestCase (Tcg2MeasureBootLibValidationTestSuite, "Tests PE Image and FileSize checks for overflow", "Common.Tcg2MeasureBootLibValidation", TestSanitizePeImageEventSize, NULL, NULL, NULL);
|
|
|
|
Status = RunAllTestSuites (Framework);
|
|
|
|
--
|
|
2.39.3
|
|
|