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| author | Qiu Shumin <shumin.qiu@intel.com> | 2015-05-11 01:44:35 +0000 |
|---|---|---|
| committer | shenshushi <shenshushi@Edk2> | 2015-05-11 01:44:35 +0000 |
| commit | db906063a71d8ddd90c2883d57bdea2c305fad6f (patch) | |
| tree | 1552012177f583a83f3c4e7a7ea81ad6090dc746 /ShellPkg | |
| parent | 1e834a6f30e755ff470c2b7bd4db97d9ee841ed0 (diff) | |
| download | edk2-db906063a71d8ddd90c2883d57bdea2c305fad6f.tar.gz edk2-db906063a71d8ddd90c2883d57bdea2c305fad6f.tar.bz2 edk2-db906063a71d8ddd90c2883d57bdea2c305fad6f.zip | |
ShellPkg: Fix buffer overflow issue in 'map' command.
This patch replace 'StrnCat' with 'StrnCatS' to avoid the buffer overflow in 'map.c'.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Qiu Shumin <shumin.qiu@intel.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17387 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ShellPkg')
| -rw-r--r-- | ShellPkg/Library/UefiShellLevel2CommandsLib/Map.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/ShellPkg/Library/UefiShellLevel2CommandsLib/Map.c b/ShellPkg/Library/UefiShellLevel2CommandsLib/Map.c index 087daac54e..a41a5f1cf6 100644 --- a/ShellPkg/Library/UefiShellLevel2CommandsLib/Map.c +++ b/ShellPkg/Library/UefiShellLevel2CommandsLib/Map.c @@ -2,7 +2,7 @@ Main file for map shell level 2 command.
(C) Copyright 2013-2015 Hewlett-Packard Development Company, L.P.<BR>
- Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>
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
@@ -224,6 +224,8 @@ MappingListHasType( )
{
CHAR16 *NewSpecific;
+ RETURN_STATUS Status;
+
//
// specific has priority
//
@@ -233,7 +235,11 @@ MappingListHasType( return FALSE;
}
if (NewSpecific[StrLen(NewSpecific)-1] != L':') {
- StrnCat(NewSpecific, L":", 2);
+ Status = StrnCatS(NewSpecific, (StrSize(Specific) + sizeof(CHAR16))/sizeof(CHAR16), L":", StrLen(L":"));
+ if (EFI_ERROR (Status)) {
+ FreePool(NewSpecific);
+ return FALSE;
+ }
}
if (SearchList(MapList, NewSpecific, NULL, TRUE, FALSE, L";")) {
@@ -875,13 +881,18 @@ AddMappingFromMapping( CONST EFI_DEVICE_PATH_PROTOCOL *DevPath;
EFI_STATUS Status;
CHAR16 *NewSName;
+ RETURN_STATUS StrRetStatus;
NewSName = AllocateCopyPool(StrSize(SName) + sizeof(CHAR16), SName);
if (NewSName == NULL) {
return (SHELL_OUT_OF_RESOURCES);
}
if (NewSName[StrLen(NewSName)-1] != L':') {
- StrnCat(NewSName, L":", 2);
+ StrRetStatus = StrnCatS(NewSName, (StrSize(SName) + sizeof(CHAR16))/sizeof(CHAR16), L":", StrLen(L":"));
+ if (EFI_ERROR(StrRetStatus)) {
+ FreePool(NewSName);
+ return ((SHELL_STATUS) (StrRetStatus & (~MAX_BIT)));
+ }
}
if (!IsNumberLetterOnly(NewSName, StrLen(NewSName)-1)) {
@@ -927,13 +938,18 @@ AddMappingFromHandle( EFI_DEVICE_PATH_PROTOCOL *DevPath;
EFI_STATUS Status;
CHAR16 *NewSName;
+ RETURN_STATUS StrRetStatus;
NewSName = AllocateCopyPool(StrSize(SName) + sizeof(CHAR16), SName);
if (NewSName == NULL) {
return (SHELL_OUT_OF_RESOURCES);
}
if (NewSName[StrLen(NewSName)-1] != L':') {
- StrnCat(NewSName, L":", 2);
+ StrRetStatus = StrnCatS(NewSName, (StrSize(SName) + sizeof(CHAR16))/sizeof(CHAR16), L":", StrLen(L":"));
+ if (EFI_ERROR(StrRetStatus)) {
+ FreePool(NewSName);
+ return ((SHELL_STATUS) (StrRetStatus & (~MAX_BIT)));
+ }
}
if (!IsNumberLetterOnly(NewSName, StrLen(NewSName)-1)) {
|