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add security check.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8680 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
vanjeff
2009-06-29 09:19:25 +00:00
parent f2a064736d
commit 894d038a8d
22 changed files with 90 additions and 40 deletions
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5
MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Impl.c
View File

@@ -1,7 +1,7 @@
/** @file
This file implement the EFI_DHCP4_PROTOCOL interface.
Copyright (c) 2006 - 2008, Intel Corporation.<BR>
Copyright (c) 2006 - 2009, Intel Corporation.<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -1313,12 +1313,13 @@ PxeDhcpInput (
//
Len = NET_ROUNDUP (sizeof (EFI_DHCP4_PACKET) + UdpPacket->TotalSize - sizeof (EFI_DHCP4_HEADER), 4);
Wrap = NetbufAlloc (Len);
if (Wrap == NULL) {
goto RESTART;
}
Packet = (EFI_DHCP4_PACKET *) NetbufAllocSpace (Wrap, Len, NET_BUF_TAIL);
ASSERT (Packet != NULL);
Packet->Size = Len;
Head = &Packet->Dhcp4.Header;
Packet->Length = NetbufCopy (UdpPacket, 0, UdpPacket->TotalSize, (UINT8 *) Head);

5
MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Option.c
View File

@@ -1,7 +1,7 @@
/** @file
Function to validate, parse, process the DHCP options.
Copyright (c) 2006 - 2008, Intel Corporation.<BR>
Copyright (c) 2006 - 2009, Intel Corporation.<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -668,8 +668,8 @@ DhcpValidateOptions (
}
AllOption = NULL;
Status = DhcpParseOption (Packet, &Count, &AllOption);
Status = DhcpParseOption (Packet, &Count, &AllOption);
if (EFI_ERROR (Status) || (Count == 0)) {
return Status;
}
@@ -679,6 +679,7 @@ DhcpValidateOptions (
for (Index = 0; Index < Count; Index++) {
Option = &AllOption[Index];
ASSERT (Option != NULL);
//
// Find the format of the option then validate it.