diff options
Diffstat (limited to 'SecurityPkg')
| -rw-r--r-- | SecurityPkg/Library/DxeImageVerificationLib/DxeImageVerificationLib.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/SecurityPkg/Library/DxeImageVerificationLib/DxeImageVerificationLib.c b/SecurityPkg/Library/DxeImageVerificationLib/DxeImageVerificationLib.c index b3648bdee4..9ea3a28ad9 100644 --- a/SecurityPkg/Library/DxeImageVerificationLib/DxeImageVerificationLib.c +++ b/SecurityPkg/Library/DxeImageVerificationLib/DxeImageVerificationLib.c @@ -1276,6 +1276,9 @@ DxeImageVerificationHandler ( // Authenticode specification.
//
PkcsCertData = (WIN_CERTIFICATE_EFI_PKCS *) WinCertificate;
+ if (PkcsCertData->Hdr.dwLength <= sizeof (PkcsCertData->Hdr)) {
+ goto Done;
+ }
AuthData = PkcsCertData->CertData;
AuthDataSize = PkcsCertData->Hdr.dwLength - sizeof(PkcsCertData->Hdr);
@@ -1290,7 +1293,8 @@ DxeImageVerificationHandler ( // The certificate is formatted as WIN_CERTIFICATE_UEFI_GUID which is described in UEFI Spec.
//
WinCertUefiGuid = (WIN_CERTIFICATE_UEFI_GUID *) WinCertificate;
- if (!CompareGuid(&WinCertUefiGuid->CertType, &gEfiCertPkcs7Guid)) {
+ if (!CompareGuid(&WinCertUefiGuid->CertType, &gEfiCertPkcs7Guid) ||
+ (WinCertUefiGuid->Hdr.dwLength <= OFFSET_OF(WIN_CERTIFICATE_UEFI_GUID, CertData))) {
goto Done;
}
AuthData = WinCertUefiGuid->CertData;
|