BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3625
DxeTpmMeasurementLib supports TPM based measurement in DXE phase.
After CcMeasurementProtocol is introduced, CC based measurement needs
to be supported in DxeTpmMeasurementLib as well.
A platform should have only one RTS/RTR. Only one of (virtual)TPM1.2,
(virtual)TPM2.0 and CC MR exists. Then only one TCG_SERVICE_PROTOCOL,
TCG2_PROTOCOL, CC_MEASUREMENT_PROTOCOL is exposed.
In this library when do measurement only one of above 3 protocols will
be called.
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3625
DxeTpm2MeasureBootLib supports TPM2 based measure boot. After
CcMeasurementProtocol is introduced, CC based measure boot needs to
be supported in DxeTpm2MeasureBootLib as well.
There are 2 major changes in this commit.
1. A platform should have only one RTS/RTR. Only one of (virtual)TPM1.2,
(virtual)TPM2.0 and CC MR exists. Then only one TCG_SERVICE_PROTOCOL,
TCG2_PROTOCOL, CC_MEASUREMENT_PROTOCOL is exposed. In this library when
do measure boot only one of TCG2_PROTOCOL / CC_MEASUREMENT_PROTOCOL
will be called. MEASURE_BOOT_PROTOCOLS is defined to store the instances
of TCG2 protocol and CC Measurement protocol.
2. CcEvent is similar to Tcg2Event except the MrIndex and PcrIndex.
So in the code Tcg2Event will be first created and intialized. If
CcMeasurementProtocol is called to do the measure boot, then CcEvent
points to Tcg2Event and the MrIndex is adjusted.
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737
Apply uncrustify changes to .c/.h files in the SecurityPkg package
Cc: Andrew Fish <afish@apple.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3767
Update use of DEBUG_CODE(Expression) if Expression is a complex code
block with if/while/for/case statements that use {}.
Cc: Andrew Fish <afish@apple.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael Kubacki <michael.kubacki@microsoft.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3760
Update all use of ', OPTIONAL' to ' OPTIONAL,' for function params.
Cc: Andrew Fish <afish@apple.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael Kubacki <michael.kubacki@microsoft.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3739
Update all use of EFI_D_* defines in DEBUG() macros to DEBUG_* defines.
Cc: Andrew Fish <afish@apple.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael Kubacki <michael.kubacki@microsoft.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
Add a NULL implementation of the library class TpmPlatformHierarchyLib.
Link: https://bugzilla.tianocore.org/show_bug.cgi?id=3510
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
Introduce the new PCD
gEfiSecurityPkgTokenSpaceGuid.PcdRandomizePlatformHierarchy.
We need it for TpmPlatformHierarchyLib.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Fix some bugs in the original PeiDxeTpmPlatformHierarchyLib.c.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2855
The Tpm2GetCapabilitySupportedAndActivePcrs function prints a
count number that should reflect the *supported and currently
active* PCR banks, but the implementation in place displays
instead the count of the *supported PCR banks* retrieved
directly from the Tpm2GetCapabilityPcrs()
TPML_PCR_SELECTION output.
The counter should only take into account those PCRs banks
which are active.
Replaced usage of EFI_D_* for DEBUG_* definitions in debug
messages.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Qi Zhang <qi1.zhang@intel.com>
Signed-off-by: Rodrigo Gonzalez del Cueto <rodrigo.gonzalez.del.cueto@intel.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
This commits add library, which consist functions to
enrolll Secure Boot keys and initialize Secure Boot
default variables. Some of the functions was moved
from SecureBootConfigImpl.c file.
Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
Reviewed-by: Sunny Wang <sunny.wang@arm.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
This commits add library, which consist helper functions related
to creation/removal Secure Boot variables. Some of the functions
was moved from SecureBootConfigImpl.c file.
Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
Reviewed-by: Sunny Wang <sunny.wang@arm.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3408
The value of SupportedAttributes in OpalGetSupportedAttributesInfo ()
is left undetermined, if the caller doesn't initialize it.
Initialize it in the function entry.
Signed-off-by: Scottie Kuo <scottie.kuo@intel.com>
Cc: Qi Zhang <qi1.zhang@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Maggie Chu <maggie.chu@intel.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
Acked-by: Jian J Wang <jian.j.wang@intel.com>
This change added a new instance of Tpm2DeviceLibDTpm to support drivers
of type MM_STANDALONE. It abstracts dynamic Pcd access into separate file
for different instances to avoid dynamic usage for StandaloneMm modules.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Qi Zhang <qi1.zhang@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Signed-off-by: Kun Qin <kun.q@outlook.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
This change extends this null instance of Tcg2PpVendorLib to support
MM_STANDALONE drivers.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Qi Zhang <qi1.zhang@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Signed-off-by: Kun Qin <kun.q@outlook.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
This change added a new instance of Tcg2PhysicalPresenceLib to support
MM_STANDALONE type drivers. It centralizes the common routines into
shared files and abstract the library constructor into corresponding
files to implement each constructor function prototypes.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Qi Zhang <qi1.zhang@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Signed-off-by: Kun Qin <kun.q@outlook.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
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>
Min Xu
Michael Kubacki
Michael D Kinney
Stefan Berger
Rodrigo Gonzalez del Cueto
Grzegorz Bernacki
Scottie Kuo
Kun Qin
gaoliming
Nishant Mistry
Bret Barkelew
Terry Lee
Qi Zhang
Zhichao Gao
Laszlo Ersek
Jiewen Yao
Maggie Chu
Guomin Jiang
Jian J Wang
Antoine Coeur