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ovmf: Fix CVE-2022-36765

Browse Source 
EDK2 is susceptible to a vulnerability in the CreateHob() function,
allowing a user to trigger a integer overflow to buffer overflow
via a local network. Successful exploitation of this vulnerability
may result in a compromise of confidentiality, integrity, and/or
availability.

References:
https://nvd.nist.gov/vuln/detail/CVE-2022-36765

Upstream-patches:
59f024c76e
aeaee8944f
9a75b030cf

(From OE-Core rev: 260fc2182e6a83d7c93b2e8efd95255cd9168a79)

Signed-off-by: Soumya Sambu <soumya.sambu@windriver.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
This commit is contained in:
Soumya Sambu
2024-08-02 03:44:49 +00:00
committed by Steve Sakoman
parent dd8ed68222
commit e8a9aac72d
4 changed files with 474 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

179
meta/recipes-core/ovmf/ovmf/CVE-2022-36765-0001.patch Normal file
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@@ -0,0 +1,179 @@
From 59f024c76ee57c2bec84794536302fc770cd6ec2 Mon Sep 17 00:00:00 2001
From: Gua Guo <gua.guo@intel.com>
Date: Thu, 11 Jan 2024 13:01:19 +0800
Subject: [PATCH] UefiPayloadPkg/Hob: Integer Overflow in CreateHob()
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4166
Fix integer overflow in various CreateHob instances.
Fixes: CVE-2022-36765
The CreateHob() function aligns the requested size to 8
performing the following operation:
```
HobLength = (UINT16)((HobLength + 0x7) & (~0x7));
```
No checks are performed to ensure this value doesn't
overflow, and could lead to CreateHob() returning a smaller
HOB than requested, which could lead to OOB HOB accesses.
Reported-by: Marc Beatove <mbeatove@google.com>
Cc: Guo Dong <guo.dong@intel.com>
Cc: Sean Rhodes <sean@starlabs.systems>
Cc: James Lu <james.lu@intel.com>
Reviewed-by: Gua Guo <gua.guo@intel.com>
Cc: John Mathew <john.mathews@intel.com>
Authored-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Gua Guo <gua.guo@intel.com>
CVE: CVE-2022-36765
Upstream-Status: Backport [https://github.com/tianocore/edk2/commit/59f024c76ee57c2bec84794536302fc770cd6ec2]
Signed-off-by: Soumya Sambu <soumya.sambu@windriver.com>
---
.../Library/PayloadEntryHobLib/Hob.c | 43 +++++++++++++++++++
.../UefiPayloadEntry/UniversalPayloadEntry.c | 8 ++--
2 files changed, 48 insertions(+), 3 deletions(-)
diff --git a/UefiPayloadPkg/Library/PayloadEntryHobLib/Hob.c b/UefiPayloadPkg/Library/PayloadEntryHobLib/Hob.c
index 2c3acbbc19..51c2e28d7d 100644
--- a/UefiPayloadPkg/Library/PayloadEntryHobLib/Hob.c
+++ b/UefiPayloadPkg/Library/PayloadEntryHobLib/Hob.c
@@ -110,6 +110,13 @@ CreateHob (
HandOffHob = GetHobList ();
+ //
+ // Check Length to avoid data overflow.
+ //
+ if (HobLength > MAX_UINT16 - 0x7) {
+ return NULL;
+ }
+
HobLength = (UINT16)((HobLength + 0x7) & (~0x7));
FreeMemory = HandOffHob->EfiFreeMemoryTop - HandOffHob->EfiFreeMemoryBottom;
@@ -160,6 +167,9 @@ BuildResourceDescriptorHob (
Hob = CreateHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, sizeof (EFI_HOB_RESOURCE_DESCRIPTOR));
ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
Hob->ResourceType = ResourceType;
Hob->ResourceAttribute = ResourceAttribute;
@@ -330,6 +340,10 @@ BuildModuleHob (
);
Hob = CreateHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, sizeof (EFI_HOB_MEMORY_ALLOCATION_MODULE));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
CopyGuid (&(Hob->MemoryAllocationHeader.Name), &gEfiHobMemoryAllocModuleGuid);
Hob->MemoryAllocationHeader.MemoryBaseAddress = MemoryAllocationModule;
@@ -378,6 +392,11 @@ BuildGuidHob (
ASSERT (DataLength <= (0xffff - sizeof (EFI_HOB_GUID_TYPE)));
Hob = CreateHob (EFI_HOB_TYPE_GUID_EXTENSION, (UINT16)(sizeof (EFI_HOB_GUID_TYPE) + DataLength));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return NULL;
+ }
+
CopyGuid (&Hob->Name, Guid);
return Hob + 1;
}
@@ -441,6 +460,10 @@ BuildFvHob (
EFI_HOB_FIRMWARE_VOLUME *Hob;
Hob = CreateHob (EFI_HOB_TYPE_FV, sizeof (EFI_HOB_FIRMWARE_VOLUME));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
Hob->BaseAddress = BaseAddress;
Hob->Length = Length;
@@ -472,6 +495,10 @@ BuildFv2Hob (
EFI_HOB_FIRMWARE_VOLUME2 *Hob;
Hob = CreateHob (EFI_HOB_TYPE_FV2, sizeof (EFI_HOB_FIRMWARE_VOLUME2));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
Hob->BaseAddress = BaseAddress;
Hob->Length = Length;
@@ -513,6 +540,10 @@ BuildFv3Hob (
EFI_HOB_FIRMWARE_VOLUME3 *Hob;
Hob = CreateHob (EFI_HOB_TYPE_FV3, sizeof (EFI_HOB_FIRMWARE_VOLUME3));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
Hob->BaseAddress = BaseAddress;
Hob->Length = Length;
@@ -546,6 +577,10 @@ BuildCpuHob (
EFI_HOB_CPU *Hob;
Hob = CreateHob (EFI_HOB_TYPE_CPU, sizeof (EFI_HOB_CPU));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
Hob->SizeOfMemorySpace = SizeOfMemorySpace;
Hob->SizeOfIoSpace = SizeOfIoSpace;
@@ -583,6 +618,10 @@ BuildStackHob (
);
Hob = CreateHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, sizeof (EFI_HOB_MEMORY_ALLOCATION_STACK));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
CopyGuid (&(Hob->AllocDescriptor.Name), &gEfiHobMemoryAllocStackGuid);
Hob->AllocDescriptor.MemoryBaseAddress = BaseAddress;
@@ -664,6 +703,10 @@ BuildMemoryAllocationHob (
);
Hob = CreateHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, sizeof (EFI_HOB_MEMORY_ALLOCATION));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
ZeroMem (&(Hob->AllocDescriptor.Name), sizeof (EFI_GUID));
Hob->AllocDescriptor.MemoryBaseAddress = BaseAddress;
diff --git a/UefiPayloadPkg/UefiPayloadEntry/UniversalPayloadEntry.c b/UefiPayloadPkg/UefiPayloadEntry/UniversalPayloadEntry.c
index edb3c20471..abfe75bd7b 100644
--- a/UefiPayloadPkg/UefiPayloadEntry/UniversalPayloadEntry.c
+++ b/UefiPayloadPkg/UefiPayloadEntry/UniversalPayloadEntry.c
@@ -111,10 +111,12 @@ AddNewHob (
}
NewHob.Header = CreateHob (Hob->Header->HobType, Hob->Header->HobLength);
-
- if (NewHob.Header != NULL) {
- CopyMem (NewHob.Header + 1, Hob->Header + 1, Hob->Header->HobLength - sizeof (EFI_HOB_GENERIC_HEADER));
+ ASSERT (NewHob.Header != NULL);
+ if (NewHob.Header == NULL) {
+ return;
}
+
+ CopyMem (NewHob.Header + 1, Hob->Header + 1, Hob->Header->HobLength - sizeof (EFI_HOB_GENERIC_HEADER));
}
/**
--
2.40.0

157
meta/recipes-core/ovmf/ovmf/CVE-2022-36765-0002.patch Normal file
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@@ -0,0 +1,157 @@
From aeaee8944f0eaacbf4cdf39279785b9ba4836bb6 Mon Sep 17 00:00:00 2001
From: Gua Guo <gua.guo@intel.com>
Date: Thu, 11 Jan 2024 13:07:50 +0800
Subject: [PATCH] EmbeddedPkg/Hob: Integer Overflow in CreateHob()
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4166
Fix integer overflow in various CreateHob instances.
Fixes: CVE-2022-36765
The CreateHob() function aligns the requested size to 8
performing the following operation:
```
HobLength = (UINT16)((HobLength + 0x7) & (~0x7));
```
No checks are performed to ensure this value doesn't
overflow, and could lead to CreateHob() returning a smaller
HOB than requested, which could lead to OOB HOB accesses.
Reported-by: Marc Beatove <mbeatove@google.com>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Reviewed-by: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Abner Chang <abner.chang@amd.com>
Cc: John Mathew <john.mathews@intel.com>
Authored-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Gua Guo <gua.guo@intel.com>
CVE: CVE-2022-36765
Upstream-Status: Backport [https://github.com/tianocore/edk2/commit/aeaee8944f0eaacbf4cdf39279785b9ba4836bb6]
Signed-off-by: Soumya Sambu <soumya.sambu@windriver.com>
---
EmbeddedPkg/Library/PrePiHobLib/Hob.c | 43 +++++++++++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/EmbeddedPkg/Library/PrePiHobLib/Hob.c b/EmbeddedPkg/Library/PrePiHobLib/Hob.c
index 8eb175aa96..cbc35152cc 100644
--- a/EmbeddedPkg/Library/PrePiHobLib/Hob.c
+++ b/EmbeddedPkg/Library/PrePiHobLib/Hob.c
@@ -110,6 +110,13 @@ CreateHob (
HandOffHob = GetHobList ();
+ //
+ // Check Length to avoid data overflow.
+ //
+ if (HobLength > MAX_UINT16 - 0x7) {
+ return NULL;
+ }
+
HobLength = (UINT16)((HobLength + 0x7) & (~0x7));
FreeMemory = HandOffHob->EfiFreeMemoryTop - HandOffHob->EfiFreeMemoryBottom;
@@ -160,6 +167,9 @@ BuildResourceDescriptorHob (
Hob = CreateHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, sizeof (EFI_HOB_RESOURCE_DESCRIPTOR));
ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
Hob->ResourceType = ResourceType;
Hob->ResourceAttribute = ResourceAttribute;
@@ -401,6 +411,10 @@ BuildModuleHob (
);
Hob = CreateHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, sizeof (EFI_HOB_MEMORY_ALLOCATION_MODULE));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
CopyGuid (&(Hob->MemoryAllocationHeader.Name), &gEfiHobMemoryAllocModuleGuid);
Hob->MemoryAllocationHeader.MemoryBaseAddress = MemoryAllocationModule;
@@ -449,6 +463,11 @@ BuildGuidHob (
ASSERT (DataLength <= (0xffff - sizeof (EFI_HOB_GUID_TYPE)));
Hob = CreateHob (EFI_HOB_TYPE_GUID_EXTENSION, (UINT16)(sizeof (EFI_HOB_GUID_TYPE) + DataLength));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return NULL;
+ }
+
CopyGuid (&Hob->Name, Guid);
return Hob + 1;
}
@@ -512,6 +531,10 @@ BuildFvHob (
EFI_HOB_FIRMWARE_VOLUME *Hob;
Hob = CreateHob (EFI_HOB_TYPE_FV, sizeof (EFI_HOB_FIRMWARE_VOLUME));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
Hob->BaseAddress = BaseAddress;
Hob->Length = Length;
@@ -543,6 +566,10 @@ BuildFv2Hob (
EFI_HOB_FIRMWARE_VOLUME2 *Hob;
Hob = CreateHob (EFI_HOB_TYPE_FV2, sizeof (EFI_HOB_FIRMWARE_VOLUME2));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
Hob->BaseAddress = BaseAddress;
Hob->Length = Length;
@@ -584,6 +611,10 @@ BuildFv3Hob (
EFI_HOB_FIRMWARE_VOLUME3 *Hob;
Hob = CreateHob (EFI_HOB_TYPE_FV3, sizeof (EFI_HOB_FIRMWARE_VOLUME3));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
Hob->BaseAddress = BaseAddress;
Hob->Length = Length;
@@ -639,6 +670,10 @@ BuildCpuHob (
EFI_HOB_CPU *Hob;
Hob = CreateHob (EFI_HOB_TYPE_CPU, sizeof (EFI_HOB_CPU));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
Hob->SizeOfMemorySpace = SizeOfMemorySpace;
Hob->SizeOfIoSpace = SizeOfIoSpace;
@@ -676,6 +711,10 @@ BuildStackHob (
);
Hob = CreateHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, sizeof (EFI_HOB_MEMORY_ALLOCATION_STACK));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
CopyGuid (&(Hob->AllocDescriptor.Name), &gEfiHobMemoryAllocStackGuid);
Hob->AllocDescriptor.MemoryBaseAddress = BaseAddress;
@@ -756,6 +795,10 @@ BuildMemoryAllocationHob (
);
Hob = CreateHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, sizeof (EFI_HOB_MEMORY_ALLOCATION));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
ZeroMem (&(Hob->AllocDescriptor.Name), sizeof (EFI_GUID));
Hob->AllocDescriptor.MemoryBaseAddress = BaseAddress;
--
2.40.0

135
meta/recipes-core/ovmf/ovmf/CVE-2022-36765-0003.patch Normal file
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@@ -0,0 +1,135 @@
From 9a75b030cf27d2530444e9a2f9f11867f79bf679 Mon Sep 17 00:00:00 2001
From: Gua Guo <gua.guo@intel.com>
Date: Thu, 11 Jan 2024 13:03:26 +0800
Subject: [PATCH] StandaloneMmPkg/Hob: Integer Overflow in CreateHob()
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4166
Fix integer overflow in various CreateHob instances.
Fixes: CVE-2022-36765
The CreateHob() function aligns the requested size to 8
performing the following operation:
```
HobLength = (UINT16)((HobLength + 0x7) & (~0x7));
```
No checks are performed to ensure this value doesn't
overflow, and could lead to CreateHob() returning a smaller
HOB than requested, which could lead to OOB HOB accesses.
Reported-by: Marc Beatove <mbeatove@google.com>
Reviewed-by: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Cc: John Mathew <john.mathews@intel.com>
Authored-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Gua Guo <gua.guo@intel.com>
CVE: CVE-2022-36765
Upstream-Status: Backport [https://github.com/tianocore/edk2/commit/9a75b030cf27d2530444e9a2f9f11867f79bf679]
Signed-off-by: Soumya Sambu <soumya.sambu@windriver.com>
---
.../Arm/StandaloneMmCoreHobLib.c | 35 +++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/StandaloneMmPkg/Library/StandaloneMmCoreHobLib/Arm/StandaloneMmCoreHobLib.c b/StandaloneMmPkg/Library/StandaloneMmCoreHobLib/Arm/StandaloneMmCoreHobLib.c
index 1550e1babc..59473e28fe 100644
--- a/StandaloneMmPkg/Library/StandaloneMmCoreHobLib/Arm/StandaloneMmCoreHobLib.c
+++ b/StandaloneMmPkg/Library/StandaloneMmCoreHobLib/Arm/StandaloneMmCoreHobLib.c
@@ -34,6 +34,13 @@ CreateHob (
HandOffHob = GetHobList ();
+ //
+ // Check Length to avoid data overflow.
+ //
+ if (HobLength > MAX_UINT16 - 0x7) {
+ return NULL;
+ }
+
HobLength = (UINT16)((HobLength + 0x7) & (~0x7));
FreeMemory = HandOffHob->EfiFreeMemoryTop - HandOffHob->EfiFreeMemoryBottom;
@@ -89,6 +96,10 @@ BuildModuleHob (
);
Hob = CreateHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, sizeof (EFI_HOB_MEMORY_ALLOCATION_MODULE));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
CopyGuid (&(Hob->MemoryAllocationHeader.Name), &gEfiHobMemoryAllocModuleGuid);
Hob->MemoryAllocationHeader.MemoryBaseAddress = MemoryAllocationModule;
@@ -129,6 +140,9 @@ BuildResourceDescriptorHob (
Hob = CreateHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, sizeof (EFI_HOB_RESOURCE_DESCRIPTOR));
ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
Hob->ResourceType = ResourceType;
Hob->ResourceAttribute = ResourceAttribute;
@@ -167,6 +181,11 @@ BuildGuidHob (
ASSERT (DataLength <= (0xffff - sizeof (EFI_HOB_GUID_TYPE)));
Hob = CreateHob (EFI_HOB_TYPE_GUID_EXTENSION, (UINT16)(sizeof (EFI_HOB_GUID_TYPE) + DataLength));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return NULL;
+ }
+
CopyGuid (&Hob->Name, Guid);
return Hob + 1;
}
@@ -226,6 +245,10 @@ BuildFvHob (
EFI_HOB_FIRMWARE_VOLUME *Hob;
Hob = CreateHob (EFI_HOB_TYPE_FV, sizeof (EFI_HOB_FIRMWARE_VOLUME));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
Hob->BaseAddress = BaseAddress;
Hob->Length = Length;
@@ -255,6 +278,10 @@ BuildFv2Hob (
EFI_HOB_FIRMWARE_VOLUME2 *Hob;
Hob = CreateHob (EFI_HOB_TYPE_FV2, sizeof (EFI_HOB_FIRMWARE_VOLUME2));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
Hob->BaseAddress = BaseAddress;
Hob->Length = Length;
@@ -282,6 +309,10 @@ BuildCpuHob (
EFI_HOB_CPU *Hob;
Hob = CreateHob (EFI_HOB_TYPE_CPU, sizeof (EFI_HOB_CPU));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
Hob->SizeOfMemorySpace = SizeOfMemorySpace;
Hob->SizeOfIoSpace = SizeOfIoSpace;
@@ -319,6 +350,10 @@ BuildMemoryAllocationHob (
);
Hob = CreateHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, sizeof (EFI_HOB_MEMORY_ALLOCATION));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }
ZeroMem (&(Hob->AllocDescriptor.Name), sizeof (EFI_GUID));
Hob->AllocDescriptor.MemoryBaseAddress = BaseAddress;
--
2.40.0

3
meta/recipes-core/ovmf/ovmf_git.bb
View File

@@ -50,6 +50,9 @@ SRC_URI = "gitsm://github.com/tianocore/edk2.git;branch=master;protocol=https \
file://CVE-2023-45237-0001.patch \
file://CVE-2023-45237-0002.patch \
file://CVE-2023-45236.patch \
file://CVE-2022-36765-0001.patch \
file://CVE-2022-36765-0002.patch \
file://CVE-2022-36765-0003.patch \
"
PV = "edk2-stable202202"