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Acidanthera UEFI Development Kit based on EDK II edk2-stable202311
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Star Zeng b7dc8888f3 MdeModulePkg Variable: Fix Timestamp zeroing issue on APPEND_WRITE 
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=415

When SetVariable() to a time based auth variable with APPEND_WRITE
attribute, and if the EFI_VARIABLE_AUTHENTICATION_2.TimeStamp in
the input Data is earlier than current value, it will cause timestamp
zeroing.

This issue may bring time based auth variable downgrade problem.
For example:
A vendor released three certs at 2014, 2015, and 2016, and system
integrated the 2016 cert. User can SetVariable() with 2015 cert and
APPEND_WRITE attribute to cause timestamp zeroing first, then
SetVariable() with 2014 cert to downgrade the cert.

This patch fixes this issue.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
 		2018-10-17 11:24:44 +08:00
AppPkg AppPkg: Removing ipf which is no longer supported from edk2. 2018-06-29 16:19:35 +08:00
ArmPkg ArmPkg: Add support for GICv4 2018-10-12 17:40:33 +02:00
ArmPlatformPkg ArmPlatformPkg: Removing ipf which is no longer supported from edk2. 2018-06-29 16:19:36 +08:00
ArmVirtPkg ArmVirtPkg/PlatformBDS: Implement PlatformBootManagerUnableToBoot 2018-07-27 15:47:55 +08:00
BaseTools BaseTools/EOT: Change to call a program instead of calling Python API. 2018-10-16 14:52:02 +08:00
BeagleBoardPkg BeagleBoardPkg: Removing ipf which is no longer supported from edk2. 2018-06-29 16:19:37 +08:00
Conf EDK II: Add .gitignore 2014-10-14 16:08:15 +00:00
CorebootModulePkg CorebootModulePkg: Removing ipf from edk2. 2018-08-14 08:58:28 +08:00
CorebootPayloadPkg CorebootPayloadPkg: don't use serial output for Release build 2018-10-17 10:35:16 +08:00
CryptoPkg CryptoPkg: Removing ipf which is no longer supported from edk2. 2018-09-25 23:40:41 +08:00
DuetPkg DuetPkg: Removing ipf which is no longer supported from edk2. 2018-06-29 16:19:38 +08:00
EdkCompatibilityPkg EdkCompatibilityPkg: Removing ipf from edk2. 2018-09-25 23:43:46 +08:00
EdkShellBinPkg EdkShellBinPkg: Removing ipf which is no longer supported from edk2. 2018-06-29 16:19:38 +08:00
EdkShellPkg EdkShellPkg: Removing ipf which is no longer supported from edk2. 2018-06-29 16:19:42 +08:00
EmbeddedPkg EmbeddedPkg/VirtualKeyboard: Avoid notification called more than once 2018-09-14 10:18:31 +08:00
EmulatorPkg EmulatorPkg/EmulatorPkg.dsc: override PCD default to avoid boot failure 2018-09-28 10:19:35 +08:00
FatBinPkg FatBinPkg: Removing ipf which is no longer supported from edk2. 2018-09-06 14:44:29 +08:00
FatPkg FatPkg: Removing ipf which is no longer supported from edk2. 2018-09-06 14:44:30 +08:00
FmpDevicePkg FmpDevicePkg FmpDxe: Lock variables in entrypoint instead of callback 2018-08-08 19:18:29 +08:00
IntelFrameworkModulePkg IntelFrameworkModulePkg Lzma: Update LZMA SDK version to 18.05 2018-10-09 09:31:11 +08:00
IntelFrameworkPkg IntelFrameworkPkg FrameworkUefiLib: Add new EfiLocateXXXAcpiTable APIs 2018-09-27 14:25:32 +08:00
IntelFsp2Pkg IntelFsp2Pkg/GenCfgOpt.py: Support PCD input from command line 2018-10-11 07:54:08 +08:00
IntelFsp2WrapperPkg IntelFsp2WrapperPkg/BaseFspWrapperPlatformLibSample: Remove PCDs 2018-09-28 10:55:10 +08:00
IntelFspPkg edk2: Move License.txt file to root 2017-08-03 11:02:17 -07:00
IntelFspWrapperPkg edk2: Move License.txt file to root 2017-08-03 11:02:17 -07:00
IntelSiliconPkg IntelSiliconPkg IntelVTdDxe: Use new EfiLocateFirstAcpiTable() 2018-09-27 14:25:33 +08:00
MdeModulePkg MdeModulePkg Variable: Fix Timestamp zeroing issue on APPEND_WRITE 2018-10-17 11:24:44 +08:00
MdePkg MdePkg: Use VENDOR_DEVICE_PATH structure for Debug Port device path 2018-10-12 14:46:01 +08:00
NetworkPkg NetworkPkg/UefiPxeBcDxe: Correct comments to align with the input parameter. 2018-10-09 08:43:35 +08:00
Nt32Pkg Nt32Pkg/Nt32Pkg.dsc: override PCD default to avoid boot failure 2018-09-28 10:19:35 +08:00
Omap35xxPkg Omap35xxPkg: Removing ipf which is no longer supported from edk2. 2018-06-29 16:19:46 +08:00
OptionRomPkg OptionRomPkg: Removing ipf which is no longer supported from edk2. 2018-09-06 14:44:30 +08:00
OvmfPkg OvmfPkg/PlatformPei: clear CPU caches 2018-10-05 22:02:55 +02:00
PcAtChipsetPkg PcAtChipsetPkg PcRtc: Use new EfiLocateFirstAcpiTable() 2018-09-27 14:25:35 +08:00
QuarkPlatformPkg QuarkPlatformPkg: Removing ipf which is no longer supported from edk2. 2018-08-14 08:58:30 +08:00
QuarkSocPkg QuarkSocPkg: Removing ipf which is no longer supported from edk2. 2018-08-14 08:58:32 +08:00
SecurityPkg SecurityPkg/Tcg2Dxe: Remove unused PCDs 2018-09-30 07:39:01 +08:00
ShellBinPkg ShellBinPkg: Clean up source files 2018-06-28 11:19:51 +08:00
ShellPkg ShellPkg-Cd: Ensure all valid cd targets are handled properly 2018-10-12 13:45:34 +08:00
SignedCapsulePkg SignedCapsulePkg: Remove PalLib in dsc which was missed at 52664c5 2018-09-25 23:40:40 +08:00
SourceLevelDebugPkg SourceLevelDebugPkg/Usb3: Make sure data from HW can fit in buffer 2018-10-17 11:03:59 +08:00
StandaloneMmPkg StandaloneMmPkg: Describe the declaration and definition files. 2018-07-20 10:59:56 +08:00
StdLib StdLib: Removing ipf which is no longer supported from edk2. 2018-06-29 16:19:51 +08:00
StdLibPrivateInternalFiles StdLibPrivateInternalFiles: Removing ipf from edk2. 2018-06-29 16:19:51 +08:00
UefiCpuPkg UefiCpuPkg/S3Resume2Pei: disable paging before creating new page table. 2018-10-15 08:36:40 +08:00
UnixPkg UnixPkg: Remove UnixPkg files (It is replaced by EmulatorPkg) 2013-07-29 21:09:55 +00:00
Vlv2DeviceRefCodePkg edk2: Move License.txt file to root 2017-08-03 11:02:17 -07:00
Vlv2TbltDevicePkg Vlv2TbltDevicePkg: Removing ipf which from edk2. 2018-08-14 08:58:33 +08:00
.gitignore edk2: Add .DS_Store to .gitignore for macOS 2017-05-19 15:14:34 -07:00
.gitmodules CryptoPkg: Adding OpenSSL as one submodule of EDKII repo 2018-01-18 14:06:15 +08:00
BuildNotes2.txt BaseTools: Updated BuildNotes URLs 2016-03-25 09:46:44 +08:00
Contributions.txt edk2: Fix typo in Contributions.txt 2017-08-16 17:50:44 +08:00
License.txt edk2: Move License.txt file to root 2017-08-03 11:02:17 -07:00
Maintainers.txt Maintainer.txt: Add Ray to be co-maintainer of EmulatorPkg 2018-09-07 12:33:16 +08:00
Readme.md edk2: Add Readme.md to root of edk2 repository 2017-08-03 11:02:25 -07:00
edksetup.bat BaseTools: Fix incorrect %EDK_TOOLS_PATH% 2018-08-08 08:44:22 +08:00
edksetup.sh Revert BaseTools: PYTHON3 migration 2018-10-15 08:29:14 +08:00

Readme.md

EDK II Project

A modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications from www.uefi.org.

Contributions to the EDK II open source project are covered by the TianoCore Contribution Agreement 1.1

The majority of the content in the EDK II open source project uses a BSD 2-Clause License. The EDK II open source project contains the following components that are covered by additional licenses:

The EDK II Project is composed of packages. The maintainers for each package are listed in Maintainers.txt.

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