This reverts commit 6c8dd15c4a.
Based on the discussion https://edk2.groups.io/g/devel/message/67764,
this change is regarded as the feature request. But, it doesn't pass
reviewed before 202011 stable tag soft feature freeze. So, it should
not be merged into 202011 stable tag.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Nishant C Mistry <nishant.c.mistry@intel.com>
Signed-off-by: Liming Gao <gaoliming@byosoft.com.cn>
Acked-by: Jiewen Yao <Jiewen.yao@intel.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2594
The re-design requires multiple RPMC counter usages.
The consumer will be capable of selecting amongst multiple counters.
Signed-off-by: Nishant C Mistry <nishant.c.mistry@intel.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
https://bugzilla.tianocore.org/show_bug.cgi?id=2522
Causes AuthService to check
IsVariablePolicyEnabled() before enforcing
write protections to allow variable deletion
when policy engine is disabled.
Only allows deletion, not modification.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Bret Barkelew <brbarkel@microsoft.com>
Signed-off-by: Bret Barkelew <brbarkel@microsoft.com>
Reviewed-by: Dandan Bi <dandan.bi@intel.com>
Acked-by: Jian J Wang <jian.j.wang@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2697
Tcg2PhysicalPresenceLibConstructor set the module variable
mIsTcg2PPVerLowerThan_1_3 with incorrect TCG version comparision.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Zhichao Gao <zhichao.gao@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2943
Disable SHA1 base on the MACRO DISABLE_SHA1_DEPRECATED_INTERFACES.
SHA1 is deprecated function and the MACRO is used to remove the whole
implementation of the SHA1. For the platforms that do not need SHA1
for security, the MACRO should works for DxeImageVerificationLib as
well.
Signed-off-by: Zhichao Gao <zhichao.gao@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Min Xu <min.m.xu@intel.com>
Cc: Qi Zhang <qi1.zhang@intel.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
The DxeImageVerificationHandler() function currently checks whether
"SecDataDir" has enough room for "WinCertificate->dwLength". However, for
advancing "OffSet", "WinCertificate->dwLength" is aligned to the next
multiple of 8. If "WinCertificate->dwLength" is large enough, the
alignment will return 0, and "OffSet" will be stuck at the same value.
Check whether "SecDataDir" has room left for both
"WinCertificate->dwLength" and the alignment.
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Min Xu <min.m.xu@intel.com>
Cc: Wenyi Xie <xiewenyi2@huawei.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2215
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200901091221.20948-4-lersek@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Wenyi Xie <xiewenyi2@huawei.com>
Reviewed-by: Min M Xu <min.m.xu@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Currently the (SecDataDirLeft <= sizeof (WIN_CERTIFICATE)) check only
guards the de-referencing of the "WinCertificate" pointer. It does not
guard the calculation of the pointer itself:
WinCertificate = (WIN_CERTIFICATE *) (mImageBase + OffSet);
This is wrong; if we don't know for sure that we have enough room for a
WIN_CERTIFICATE, then even creating such a pointer, not just
de-referencing it, may invoke undefined behavior.
Move the pointer calculation after the size check.
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Min Xu <min.m.xu@intel.com>
Cc: Wenyi Xie <xiewenyi2@huawei.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2215
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200901091221.20948-3-lersek@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Wenyi Xie <xiewenyi2@huawei.com>
Reviewed-by: Min M Xu <min.m.xu@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
The following two quantities:
SecDataDir->VirtualAddress + SecDataDir->Size
SecDataDir->VirtualAddress + SecDataDir->Size - OffSet
are used multiple times in DxeImageVerificationHandler(). Introduce helper
variables for them: "SecDataDirEnd" and "SecDataDirLeft", respectively.
This saves us multiple calculations and significantly simplifies the code.
Note that all three summands above have type UINT32, therefore the new
variables are also of type UINT32.
This patch does not change behavior.
(Note that the code already handles the case when the
SecDataDir->VirtualAddress + SecDataDir->Size
UINT32 addition overflows -- namely, in that case, the certificate loop is
never entered, and the corruption check right after the loop fires.)
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Min Xu <min.m.xu@intel.com>
Cc: Wenyi Xie <xiewenyi2@huawei.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2215
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200901091221.20948-2-lersek@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Wenyi Xie <xiewenyi2@huawei.com>
Reviewed-by: Min M Xu <min.m.xu@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Tpm2GetCapabilityIsCommandImplemented
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2793
check if the commad is supported by comparing the command code with
command index.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Signed-off-by: Qi Zhang <qi1.zhang@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
https://bugzilla.tianocore.org/show_bug.cgi?id=2713
In current code, If TCG2_PHYSICAL_PRESENCE_FLAGS_VARIABLE variable
is not exist, code will get default value from two places.
This fix is to make the default value comes from the PCD
gEfiSecurityPkgTokenSpaceGuid.PcdTcg2PhysicalPresenceFlags
Signed-off-by: Maggie Chu <maggie.chu@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2652
According to the File description, the File is optional and can be NULL.
Signed-off-by: Guomin Jiang <guomin.jiang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2652
According to the File description, The File is optional and can be NULL.
Signed-off-by: Guomin Jiang <guomin.jiang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2652
DxeTpm2MeasureBootHandler() and DxeTpmMeasureBootHandler() functions may
receive a FileBuffer argument that is not associated with any particular
device path (e.g., because the UEFI image has not been loaded from any
particular device path).
Therefore rejecting (File==NULL) at the top of the function is invalid.
Fixes: 4b026f0d5a
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Guomin Jiang <guomin.jiang@intel.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2594
Add null version of VariableKeyLib instance. The full version should be
provided by platforms which supports key generator.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Nishant C Mistry <nishant.c.mistry@intel.com>
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Michael Kubacki <michael.kubacki@microsoft.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2594
Add null version of RpmcLib instance. The full version should be provided
by platform which supports RPMC device.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Nishant C Mistry <nishant.c.mistry@intel.com>
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
IsCertHashFoundInDatabase() is actually used only for searching dbx,
according to the function logic, its comments and its use cases. Changing
it to IsCertHashFoundInDbx to avoid confusion.
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1608
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1608
To avoid false-negative issue in check hash against dbx, both error
condition (as return value) and check result (as out parameter) of
IsSignatureFoundInDatabase() are added. So the caller of this function
will know exactly if a failure is caused by a black list hit or
other error happening, and enforce a more secure operation to prevent
secure boot from being bypassed. For a white list check (db), there's
no such necessity.
All intermediate results inside this function will be checked and
returned immediately upon any failure or error, like out-of-resource,
hash calculation error or certificate retrieval failure.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1608
If the second GetVariable() call for "dbx" fails, in IsForbiddenByDbx(),
we have to free Data. Jump to "Done" for that.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1608
All intermediate results inside this function will be checked and
returned immediately upon any failure or error, like out-of-resource,
hash calculation error or certificate retrieval failure.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1608
To avoid false-negative issue in check hash against dbx, both error
condition (as return value) and check result (as out parameter) of
IsCertHashFoundInDatabase() are added. So the caller of this function
will know exactly if a failure is caused by a black list hit or
other error happening, and enforce a more secure operation to prevent
secure boot from being bypassed. For a white list check (db), there's
no such necessity.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1608
The dbx fetching code inside the while/for-loop causes code hard to
understand. Since there's no need to get dbx more than once, this patch
simplify the code logic by moving related code to be outside the while-
loop. db fetching code is also refined accordingly to reduce the indent
level of code.
More comments are also added or refined to explain more details.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1608
In timestamp check after the cert is found in db, the original code jumps
to 'Done' if any error happens in fetching dbx variable. At any of the
jump, VerifyStatus equals to TRUE, which means allowed-by-db. This should
not be allowed except to EFI_NOT_FOUND case (meaning dbx doesn't exist),
because it could be used to bypass timestamp check.
This patch add code to change VerifyStatus to FALSE in the case of memory
allocation failure and dbx fetching failure to avoid potential bypass
issue.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1608
Normally two times of calling gRT->GetVariable() are needed to get
the data of a variable: get the variable size by passing zero variable
size, and then allocate enough memory and pass the correct variable size
and buffer.
But in the inner loop in IsAllowedByDb(), the DbxDataSize was not
initialized to zero before calling gRT->GetVariable(). It won't cause
problem if dbx does not exist. But it will give wrong result if dbx
exists and the DbxDataSize happens to be a small enough value. In this
situation, EFI_BUFFER_TOO_SMALL will be returned. Then the result check
code followed will jump to 'Done', which is not correct because it's
actually the value expected.
if (Status == EFI_BUFFER_TOO_SMALL) {
goto Done;
}
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
In case the signers' certificate stack, retrieved from the PE/COFF image's
Authenticode blob, has zero elements (=there are zero signer certificates),
then we should consider the image forbidden by DBX, not accepted by DBX.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1608
Pointer HashCtx used in IsCertHashFoundInDatabase() is not freed inside
the while-loop, if it will run more than once.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Fix various typos in documentation, comments and debug strings.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Antoine Coeur <coeur@gmx.fr>
Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Philippe Mathieu-Daude <philmd@redhat.com>
Message-Id: <20200207010831.9046-66-philmd@redhat.com>
[lersek@redhat.com: replace EFI_D_xxx w/ DEBUG_xxx to shut up PatchCheck]
Fix various typos in comments and documentation.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Antoine Coeur <coeur@gmx.fr>
Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Philippe Mathieu-Daude <philmd@redhat.com>
Message-Id: <20200207010831.9046-65-philmd@redhat.com>
Fix few typos in comments and documentation.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Antoine Coeur <coeur@gmx.fr>
Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Philippe Mathieu-Daude <philmd@redhat.com>
Message-Id: <20200207010831.9046-63-philmd@redhat.com>
The DxeTpmMeasureBootHandler and DxeTpm2MeasureBootHandler handlers
are SECURITY2_FILE_AUTHENTICATION_HANDLER prototype. This prototype
can not return EFI_INVALID_PARAMETER.
The prototype documentation states it returns EFI_ACCESS_DENIED if:
"The file specified by File and FileBuffer did not authenticate,
and the platform policy dictates that the DXE Foundation may not
use File."
Correct the documentation, and add a early check, returning
EFI_ACCESS_DENIED when File is NULL.
Noticed while reviewing commit 6d57592740.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Philippe Mathieu-Daude <philmd@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2472
Replace the ASSERT with the error code return in the TpmPhysicalPresence
and GetTpmCapability.
Add missing error checking after call TpmPhysicalPresence in
TcgPhysicalPresenceLibProcessRequest.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Zhichao Gao <zhichao.gao@intel.com>
In DxeImageVerificationHandler(), we should return EFI_SECURITY_VIOLATION
for a rejected image only if the platform sets
DEFER_EXECUTE_ON_SECURITY_VIOLATION as the policy for the image's source.
Otherwise, EFI_ACCESS_DENIED must be returned.
Right now, EFI_SECURITY_VIOLATION is returned for all rejected images,
which is wrong -- it causes LoadImage() to hold on to rejected images (in
untrusted state), for further platform actions. However, if a platform
already set DENY_EXECUTE_ON_SECURITY_VIOLATION, the platform will not
expect the rejected image to stick around in memory (regardless of its
untrusted state).
Therefore, adhere to the platform policy in the return value of the
DxeImageVerificationHandler() function.
Furthermore, according to "32.4.2 Image Execution Information Table" in
the UEFI v2.8 spec, and considering that edk2 only supports (AuditMode==0)
at the moment:
> When AuditMode==0, if the image's signature is not found in the
> authorized database, or is found in the forbidden database, the image
> will not be started and instead, information about it will be placed in
> this table.
we have to store an EFI_IMAGE_EXECUTION_INFO record in both the "defer"
case and the "deny" case. Thus, the AddImageExeInfo() call is not being
made conditional on (Policy == DEFER_EXECUTE_ON_SECURITY_VIOLATION); the
documentation is updated instead.
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2129
Fixes: 5db28a6753
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200116190705.18816-12-lersek@redhat.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
[lersek@redhat.com: push with Mike's R-b due to Chinese New Year
Holiday: <https://edk2.groups.io/g/devel/message/53429>; msgid
<d3fbb76dabed4e1987c512c328c82810@intel.com>]
It makes no sense to call AddImageExeInfo() with (Signature == NULL) and
(SignatureSize > 0). AddImageExeInfo() does not crash in such a case -- it
avoids the CopyMem() call --, but it creates an invalid
EFI_IMAGE_EXECUTION_INFO record. Namely, the
"EFI_IMAGE_EXECUTION_INFO.InfoSize" field includes "SignatureSize", but
the actual signature bytes are not filled in.
Document and ASSERT() this condition in AddImageExeInfo().
In DxeImageVerificationHandler(), zero out "SignatureListSize" if we set
"SignatureList" to NULL due to AllocateZeroPool() failure.
(Another approach could be to avoid calling AddImageExeInfo() completely,
in case AllocateZeroPool() fails. Unfortunately, the UEFI v2.8 spec does
not seem to state clearly whether a signature is mandatory in
EFI_IMAGE_EXECUTION_INFO, if the "Action" field is
EFI_IMAGE_EXECUTION_AUTH_SIG_FAILED or EFI_IMAGE_EXECUTION_AUTH_SIG_FOUND.
For now, the EFI_IMAGE_EXECUTION_INFO addition logic is not changed; we
only make sure that the record we add is not malformed.)
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2129
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200116190705.18816-11-lersek@redhat.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
[lersek@redhat.com: push with Mike's R-b due to Chinese New Year
Holiday: <https://edk2.groups.io/g/devel/message/53429>; msgid
<d3fbb76dabed4e1987c512c328c82810@intel.com>]
"FileBuffer" is a non-optional input (pointer) parameter to
DxeImageVerificationHandler(). Normally, when an edk2 function receives a
NULL argument for such a parameter, we return EFI_INVALID_PARAMETER or
RETURN_INVALID_PARAMETER. However, those don't conform to the
SECURITY2_FILE_AUTHENTICATION_HANDLER prototype.
Return EFI_ACCESS_DENIED when "FileBuffer" is NULL; it means that no image
has been loaded.
This patch does not change the control flow in the function, it only
changes the "Status" outcome from API-incompatible error codes to
EFI_ACCESS_DENIED, under some circumstances.
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2129
Fixes: 570b3d1a72
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200116190705.18816-10-lersek@redhat.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
[lersek@redhat.com: push with Mike's R-b due to Chinese New Year
Holiday: <https://edk2.groups.io/g/devel/message/53429>; msgid
<d3fbb76dabed4e1987c512c328c82810@intel.com>]
The "Status" variable is set to EFI_ACCESS_DENIED at the top of the
function. Then it is overwritten with EFI_SECURITY_VIOLATION under the
"Failed" (earlier: "Done") label. We finally return "Status".
The above covers the complete usage of "Status" in
DxeImageVerificationHandler(). Remove the variable, and simply return
EFI_SECURITY_VIOLATION in the end.
This patch is a no-op, regarding behavior.
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2129
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200116190705.18816-9-lersek@redhat.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
[lersek@redhat.com: push with Mike's R-b due to Chinese New Year
Holiday: <https://edk2.groups.io/g/devel/message/53429>; msgid
<d3fbb76dabed4e1987c512c328c82810@intel.com>]
Before the "Done" label at the end of DxeImageVerificationHandler(), we
now have a single access to "Status": we set "Status" to EFI_ACCESS_DENIED
at the top of the function. Therefore, the (Status != EFI_SUCCESS)
condition is always true under the "Done" label.
Accordingly, unnest the AddImageExeInfo() call dependent on that
condition, remove the condition, and also rename the "Done" label to
"Failed".
Functionally, this patch is a no-op. It's easier to review with:
git show -b -W
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2129
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200116190705.18816-8-lersek@redhat.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
[lersek@redhat.com: replace EFI_D_INFO w/ DEBUG_INFO for PatchCheck.py]
[lersek@redhat.com: push with Mike's R-b due to Chinese New Year
Holiday: <https://edk2.groups.io/g/devel/message/53429>; msgid
<d3fbb76dabed4e1987c512c328c82810@intel.com>]
After the final "IsVerified" check, we set "Status" to EFI_ACCESS_DENIED.
This is superfluous, as "Status" already carries EFI_ACCESS_DENIED value
there, from the top of the function. Remove the assignment.
Functionally, this change is a no-op.
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2129
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200116190705.18816-7-lersek@redhat.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
[lersek@redhat.com: push with Mike's R-b due to Chinese New Year
Holiday: <https://edk2.groups.io/g/devel/message/53429>; msgid
<d3fbb76dabed4e1987c512c328c82810@intel.com>]
A SECURITY2_FILE_AUTHENTICATION_HANDLER function is not expected to return
EFI_OUT_OF_RESOURCES. We should only return EFI_SUCCESS,
EFI_SECURITY_VIOLATION, or EFI_ACCESS_DENIED.
In case we run out of memory while preparing "SignatureList" for
AddImageExeInfo(), we should simply stick with the EFI_ACCESS_DENIED value
that is already in "Status" -- from just before the "Action" condition --,
and not suppress it with EFI_OUT_OF_RESOURCES.
This patch does not change the control flow in the function, it only
changes the "Status" outcome from API-incompatible error codes to
EFI_ACCESS_DENIED, under some circumstances.
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2129
Fixes: 570b3d1a72
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200116190705.18816-6-lersek@redhat.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
[lersek@redhat.com: push with Mike's R-b due to Chinese New Year
Holiday: <https://edk2.groups.io/g/devel/message/53429>; msgid
<d3fbb76dabed4e1987c512c328c82810@intel.com>]
Inside the "for" loop that scans the signatures of the image, we call
HashPeImageByType(), and assign its return value to "Status".
Beyond the immediate retval check, this assignment is useless (never
consumed). That's because a subsequent access to "Status" may only be one
of the following:
- the "Status" assignment when we call HashPeImageByType() in the next
iteration of the loop,
- the "Status = EFI_ACCESS_DENIED" assignment right after the final
"IsVerified" check.
To make it clear that the assignment is only useful for the immediate
HashPeImageByType() retval check, introduce a specific helper variable,
called "HashStatus".
This patch is a no-op, functionally.
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2129
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200116190705.18816-5-lersek@redhat.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
[lersek@redhat.com: push with Mike's R-b due to Chinese New Year
Holiday: <https://edk2.groups.io/g/devel/message/53429>; msgid
<d3fbb76dabed4e1987c512c328c82810@intel.com>]
The PeCoffLoaderGetImageInfo() function may return various error codes,
such as RETURN_INVALID_PARAMETER and RETURN_UNSUPPORTED.
Such error values should not be assigned to our "Status" variable in the
DxeImageVerificationHandler() function, because "Status" generally stands
for the main exit value of the function. And
SECURITY2_FILE_AUTHENTICATION_HANDLER functions are expected to return one
of EFI_SUCCESS, EFI_SECURITY_VIOLATION, and EFI_ACCESS_DENIED only.
Introduce the "PeCoffStatus" helper variable for keeping the return value
of PeCoffLoaderGetImageInfo() internal to the function. If
PeCoffLoaderGetImageInfo() fails, we'll jump to the "Done" label with
"Status" being EFI_ACCESS_DENIED, inherited from the top of the function.
Note that this is consistent with the subsequent PE/COFF Signature check,
where we jump to the "Done" label with "Status" having been re-set to
EFI_ACCESS_DENIED.
As a consequence, we can at once remove the
Status = EFI_ACCESS_DENIED;
assignment right after the "PeCoffStatus" check.
This patch does not change the control flow in the function, it only
changes the "Status" outcome from API-incompatible error codes to
EFI_ACCESS_DENIED, under some circumstances.
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2129
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200116190705.18816-4-lersek@redhat.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
[lersek@redhat.com: push with Mike's R-b due to Chinese New Year
Holiday: <https://edk2.groups.io/g/devel/message/53429>; msgid
<d3fbb76dabed4e1987c512c328c82810@intel.com>]
In the code structure
if (condition) {
//
// block1
//
return;
} else {
//
// block2
//
}
nesting "block2" in an "else" branch is superfluous, and harms
readability. It can be transformed to:
if (condition) {
//
// block1
//
return;
}
//
// block2
//
with identical behavior, and improved readability (less nesting).
The same applies to "break" (instead of "return") in a loop body.
Perform these transformations on DxeImageVerificationHandler().
This patch is a no-op for behavior. Use
git show -b -W
for reviewing it more easily.
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2129
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200116190705.18816-3-lersek@redhat.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
[lersek@redhat.com: push with Mike's R-b due to Chinese New Year
Holiday: <https://edk2.groups.io/g/devel/message/53429>; msgid
<d3fbb76dabed4e1987c512c328c82810@intel.com>]
In the DxeImageVerificationHandler() function, the "VerifyStatus" variable
can only contain one of two values: EFI_SUCCESS and EFI_ACCESS_DENIED.
Furthermore, the variable is only consumed with EFI_ERROR().
Therefore, using the EFI_STATUS type for the variable is unnecessary.
Worse, given the complex meanings of the function's return values, using
EFI_STATUS for "VerifyStatus" is actively confusing.
Rename the variable to "IsVerified", and make it a simple BOOLEAN.
This patch is a no-op, regarding behavior.
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2129
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200116190705.18816-2-lersek@redhat.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
[lersek@redhat.com: push with Mike's R-b due to Chinese New Year
Holiday: <https://edk2.groups.io/g/devel/message/53429>; msgid
<d3fbb76dabed4e1987c512c328c82810@intel.com>]
https://bugzilla.tianocore.org/show_bug.cgi?id=2265
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=1781
GITHUB: https://github.com/idesai/edk2/tree/enable_sm3_measured_boot_v6
EDK2 Support for SM3 digest algorithm is needed to enable TPM with SM3 PCR
banks. This digest algorithm is part of the China Crypto algorithm suite.
This integration has dependency on the openssl_1_1_1b integration into
edk2.
This patch adds SM3 as an available digest algorithm to crypto router.
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian Wang <jian.j.wang@intel.com>
Signed-off-by: Imran Desai <imran.desai@intel.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
Message-Id: <20190718225326.40839-3-imran.desai@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=1781
GITHUB: https://github.com/idesai/edk2/tree/enable_sm3_measured_boot_v6
EDK2 Support for SM3 digest algorithm is needed to enable TPM with SM3 PCR
banks. This digest algorithm is part of the China Crypto algorithm suite.
This integration has dependency on the openssl_1_1_1b integration into
edk2.
This patch add SM3 algorithm in the hashinstance library.
Delta in v7:
1. Dropped 95a040cff from v6 to address https://edk2.groups.io/g/devel/topic/
32454898?p=,,,20,0,0,0::Created,,sm3,20,2,0,32454898,ct=1&ct=1
2. Relocated SM3 GUID definition from MdePkg to SecurityPkg in 9728b54f4
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian Wang <jian.j.wang@intel.com>
Signed-off-by: Imran Desai <imran.desai@intel.com>
Message-Id: <20190718225326.40839-2-imran.desai@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
This reverts commit 06dd5863b6.
The reason is that said commit directly depends on commit 49c1e683c4
("MdePkg/Protocol/Hash: introduce GUID for SM3", 2019-07-03), and the
latter commit is going to be reverted, due to its review process not
having followed established edk2 norms.
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Imran Desai <imran.desai@intel.com>
Cc: Jian Wang <jian.j.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1781
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
This reverts commit 542d04e2a4.
The reason is that said commit indirectly depends on commit 49c1e683c4
("MdePkg/Protocol/Hash: introduce GUID for SM3", 2019-07-03), and the
latter commit is going to be reverted, due to its review process not
having followed established edk2 norms.
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Imran Desai <imran.desai@intel.com>
Cc: Jian Wang <jian.j.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1781
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
gaoliming
Nishant Mistry
Bret Barkelew
Terry Lee
Qi Zhang
Zhichao Gao
Laszlo Ersek
Michael D Kinney
Jiewen Yao
Maggie Chu
Guomin Jiang
Jian J Wang
Antoine Coeur
Sean Brogan
Imran Desai