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authorGuomin Jiang <guomin.jiang@intel.com>2020-04-15 11:33:08 +0800
committermergify[bot] <37929162+mergify[bot]@users.noreply.github.com>2020-04-22 01:55:34 +0000
commit1755932f89e0b32fa09232661a5ae6c357f4e471 (patch)
tree0577ffe6761ff46b2c3ab8f580256e244514a415 /SecurityPkg/Library/DxeTpm2MeasureBootLib
parentb447a20bdfb2ff24ba048bb3026c902c4768a7e9 (diff)
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SecurityPkg/TPM: measure UEFI images without associated device paths again
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: 4b026f0d5af36faf3a3629a3ad49c51b5b3be12f 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>
Diffstat (limited to 'SecurityPkg/Library/DxeTpm2MeasureBootLib')
-rw-r--r--SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.c b/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.c
index f0e95e5ec0..92eac71580 100644
--- a/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.c
+++ b/SecurityPkg/Library/DxeTpm2MeasureBootLib/DxeTpm2MeasureBootLib.c
@@ -384,8 +384,6 @@ Finish:
and other exception operations. The File parameter allows for possible logging
within the SAP of the driver.
- If File is NULL, then EFI_ACCESS_DENIED is returned.
-
If the file specified by File with an authentication status specified by
AuthenticationStatus is safe for the DXE Core to use, then EFI_SUCCESS is returned.
@@ -398,6 +396,8 @@ Finish:
might be possible to use it at a future time, then EFI_SECURITY_VIOLATION is
returned.
+ If check image specified by FileBuffer and File is NULL meanwhile, return EFI_ACCESS_DENIED.
+
@param[in] AuthenticationStatus This is the authentication status returned
from the securitymeasurement services for the
input file.
@@ -416,7 +416,7 @@ EFI_STATUS
EFIAPI
DxeTpm2MeasureBootHandler (
IN UINT32 AuthenticationStatus,
- IN CONST EFI_DEVICE_PATH_PROTOCOL *File,
+ IN CONST EFI_DEVICE_PATH_PROTOCOL *File, OPTIONAL
IN VOID *FileBuffer,
IN UINTN FileSize,
IN BOOLEAN BootPolicy
@@ -435,13 +435,6 @@ DxeTpm2MeasureBootHandler (
EFI_PHYSICAL_ADDRESS FvAddress;
UINT32 Index;
- //
- // Check for invalid parameters.
- //
- if (File == NULL) {
- return EFI_ACCESS_DENIED;
- }
-
Status = gBS->LocateProtocol (&gEfiTcg2ProtocolGuid, NULL, (VOID **) &Tcg2Protocol);
if (EFI_ERROR (Status)) {
//
@@ -616,6 +609,13 @@ DxeTpm2MeasureBootHandler (
Status = PeCoffLoaderGetImageInfo (&ImageContext);
if (EFI_ERROR (Status)) {
//
+ // Check for invalid parameters.
+ //
+ if (File == NULL) {
+ Status = EFI_ACCESS_DENIED;
+ }
+
+ //
// The information can't be got from the invalid PeImage
//
goto Finish;