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ovmf: Fix CVE-2023-45237

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EDK2's Network Package is susceptible to a predictable TCP Initial Sequence
Number. This vulnerability can be exploited by an attacker to gain
unauthorized access and potentially lead to a loss of Confidentiality.

References:
https://nvd.nist.gov/vuln/detail/CVE-2023-45237

Upstream-patches:
cf07238e5f
4c4ceb2ceb

(From OE-Core rev: 6f8bdaad9d22e65108f859a695277ce1b20ef7c6)

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 03:34:33 +00:00
committed by Steve Sakoman
parent 3a7159d8d8
commit 4c2d3e3730
3 changed files with 1368 additions and 0 deletions
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78
meta/recipes-core/ovmf/ovmf/CVE-2023-45237-0001.patch Normal file
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@@ -0,0 +1,78 @@
From cf07238e5fa4f8b1138ac1c9e80530b4d4e59f1c Mon Sep 17 00:00:00 2001
From: Pierre Gondois <pierre.gondois@arm.com>
Date: Fri, 11 Aug 2023 16:33:06 +0200
Subject: [PATCH] MdePkg/Rng: Add GUID to describe Arm Rndr Rng algorithms
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4441
The EFI_RNG_PROTOCOL can rely on the RngLib. The RngLib has multiple
implementations, some of them are unsafe (e.g. BaseRngLibTimerLib).
To allow the RngDxe to detect when such implementation is used,
a GetRngGuid() function is added in a following patch.
Prepare GetRngGuid() return values and add a gEfiRngAlgorithmArmRndr
to describe a Rng algorithm accessed through Arm's RNDR instruction.
[1] states that the implementation of this algorithm should be
compliant to NIST SP900-80. The compliance is not guaranteed.
[1] Arm Architecture Reference Manual Armv8, for A-profile architecture
sK12.1 'Properties of the generated random number'
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Kun Qin <kun.qin@microsoft.com>
CVE: CVE-2023-45237
Upstream-Status: Backport [https://github.com/tianocore/edk2/commit/cf07238e5fa4f8b1138ac1c9e80530b4d4e59f1c]
Signed-off-by: Soumya Sambu <soumya.sambu@windriver.com>
---
MdePkg/Include/Protocol/Rng.h | 10 ++++++++++
MdePkg/MdePkg.dec | 1 +
2 files changed, 11 insertions(+)
diff --git a/MdePkg/Include/Protocol/Rng.h b/MdePkg/Include/Protocol/Rng.h
index baf425587b..38bde53240 100644
--- a/MdePkg/Include/Protocol/Rng.h
+++ b/MdePkg/Include/Protocol/Rng.h
@@ -67,6 +67,15 @@ typedef EFI_GUID EFI_RNG_ALGORITHM;
{ \
0xe43176d7, 0xb6e8, 0x4827, {0xb7, 0x84, 0x7f, 0xfd, 0xc4, 0xb6, 0x85, 0x61 } \
}
+///
+/// The Arm Architecture states the RNDR that the DRBG algorithm should be compliant
+/// with NIST SP800-90A, while not mandating a particular algorithm, so as to be
+/// inclusive of different geographies.
+///
+#define EFI_RNG_ALGORITHM_ARM_RNDR \
+ { \
+ 0x43d2fde3, 0x9d4e, 0x4d79, {0x02, 0x96, 0xa8, 0x9b, 0xca, 0x78, 0x08, 0x41} \
+ }
/**
Returns information about the random number generation implementation.
@@ -146,5 +155,6 @@ extern EFI_GUID gEfiRngAlgorithmSp80090Ctr256Guid;
extern EFI_GUID gEfiRngAlgorithmX9313DesGuid;
extern EFI_GUID gEfiRngAlgorithmX931AesGuid;
extern EFI_GUID gEfiRngAlgorithmRaw;
+extern EFI_GUID gEfiRngAlgorithmArmRndr;
#endif
diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
index 59b405928b..a449dbc556 100644
--- a/MdePkg/MdePkg.dec
+++ b/MdePkg/MdePkg.dec
@@ -594,6 +594,7 @@
gEfiRngAlgorithmX9313DesGuid = { 0x63c4785a, 0xca34, 0x4012, {0xa3, 0xc8, 0x0b, 0x6a, 0x32, 0x4f, 0x55, 0x46 }}
gEfiRngAlgorithmX931AesGuid = { 0xacd03321, 0x777e, 0x4d3d, {0xb1, 0xc8, 0x20, 0xcf, 0xd8, 0x88, 0x20, 0xc9 }}
gEfiRngAlgorithmRaw = { 0xe43176d7, 0xb6e8, 0x4827, {0xb7, 0x84, 0x7f, 0xfd, 0xc4, 0xb6, 0x85, 0x61 }}
+ gEfiRngAlgorithmArmRndr = { 0x43d2fde3, 0x9d4e, 0x4d79, {0x02, 0x96, 0xa8, 0x9b, 0xca, 0x78, 0x08, 0x41 }}
## Include/Protocol/AdapterInformation.h
gEfiAdapterInfoMediaStateGuid = { 0xD7C74207, 0xA831, 0x4A26, {0xB1, 0xF5, 0xD1, 0x93, 0x06, 0x5C, 0xE8, 0xB6 }}
--
2.40.0

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@@ -47,6 +47,8 @@ SRC_URI = "gitsm://github.com/tianocore/edk2.git;branch=master;protocol=https \
file://CVE-2023-45229-0002.patch \
file://CVE-2023-45229-0003.patch \
file://CVE-2023-45229-0004.patch \
file://CVE-2023-45237-0001.patch \
file://CVE-2023-45237-0002.patch \
"
PV = "edk2-stable202202"