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NetworkPkg: SECURITY PATCH CVE-2023-45237

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REF:https://bugzilla.tianocore.org/show_bug.cgi?id=4542

Bug Overview:
PixieFail Bug #9
CVE-2023-45237
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

Use of a Weak PseudoRandom Number Generator

Change Overview:

Updates all Instances of NET_RANDOM (NetRandomInitSeed ()) to either

>
> EFI_STATUS
> EFIAPI
> PseudoRandomU32 (
>  OUT UINT32  *Output
>  );
>

or (depending on the use case)

>
> EFI_STATUS
> EFIAPI
> PseudoRandom (
>  OUT  VOID   *Output,
>  IN   UINTN  OutputLength
>  );
>

This is because the use of

Example:

The following code snippet PseudoRandomU32 () function is used:

>
> UINT32         Random;
>
> Status = PseudoRandomU32 (&Random);
> if (EFI_ERROR (Status)) {
>   DEBUG ((DEBUG_ERROR, "%a failed to generate random number: %r\n",
__func__, Status));
>   return Status;
> }
>

This also introduces a new PCD to enable/disable the use of the
secure implementation of algorithms for PseudoRandom () and
instead depend on the default implementation. This may be required for
some platforms where the UEFI Spec defined algorithms are not available.

>
> PcdEnforceSecureRngAlgorithms
>

If the platform does not have any one of the UEFI defined
secure RNG algorithms then the driver will assert.

Cc: Saloni Kasbekar <saloni.kasbekar@intel.com>
Cc: Zachary Clark-williams <zachary.clark-williams@intel.com>

Signed-off-by: Doug Flick [MSFT] <doug.edk2@gmail.com>
Reviewed-by: Saloni Kasbekar <saloni.kasbekar@intel.com>
This commit is contained in:
Doug Flick
2024-05-08 22:56:28 -07:00
committed by mergify[bot]
parent a85336531c
commit 4c4ceb2ceb
27 changed files with 410 additions and 83 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
NetworkPkg/IScsiDxe/IScsiMisc.c
View File

@@ -2,6 +2,7 @@
Miscellaneous routines for iSCSI driver.
Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
Copyright (c) Microsoft Corporation
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@@ -474,20 +475,17 @@ IScsiNetNtoi (
@param[in, out] Rand The buffer to contain random numbers.
@param[in] RandLength The length of the Rand buffer.
@retval EFI_SUCCESS on success
@retval others on error
**/
VOID
EFI_STATUS
IScsiGenRandom (
IN OUT UINT8 *Rand,
IN UINTN RandLength
)
{
UINT32 Random;
while (RandLength > 0) {
Random = NET_RANDOM (NetRandomInitSeed ());
*Rand++ = (UINT8)(Random);
RandLength--;
}
return PseudoRandom (Rand, RandLength);
}
/**