XADM: Importing CSV to Directory Causes GPF in MAD

When doing an import to an existing directory item (that is, not a new item) and that item has secondary proxies of some kind, a string comparison is done against a pointer that is one off the end of an array. Depending on what this points to, it may produce an access violation in Mad.exe.

Microsoft has confirmed this to be a problem in Microsoft Exchange Server versions 4.0 and 5.0. This problem was corrected in the latest Microsoft Exchange Server 4.0 and 5.0 U.S. Service Packs. For information on obtaining the service pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

The Drwtsn32.log file that is produced will look something like the following:

   Microsoft (R) Windows NT (TM) Version 3.51 DrWtsn32
   Copyright (C) 1985-1995 Microsoft Corp. All rights reserved.

   Application exception occurred:
         App: MAD.DBG (pid=76)
         When: 2/19/1997 @ 9:39:5.106
         Exception number: c0000005 (access violation)

   State Dump for Thread Id 0x1aa

   EAX=ffffffff  EBX=00000000  ECX=00177008  EDX=00030002  ESI=00000001
   EDI=00000018
   EIP=77f2421f  ESP=0184fa8c  EBP=0184fb0c  EFL=00000202
   CS=001b  DS=0023  ES=0023  SS=0023  FS=0038  GS=0000

   function: _CompareStringW

   0x77f241ff  010f  add          dword ptr [edi],ecx
   0x77f24201  8701  xchg         dword ptr [ecx],eax
   0x77f24203  0b00  or           eax,dword ptr [eax]
   0x77f24205  008b5 add          byte ptr [ebx+4d8b1055],cl
   0x77f2420b  18894 sbb          byte ptr [ecx-2d7a17b3],cl
   0x77f24211  0f84d je           _CompareStringW@24+00000bd7
   0x77f24217  85c9  test         ecx,ecx
   0x77f24219  0f84d je           _CompareStringW@24+00000bd7
   FAULT-->  0x77f2421f  668b0 mov          cx,word ptr [edx]
   0x77f24222  8b5d1 mov          ebx,dword ptr [ebp+18]
   0x77f24225  66390 cmp          word ptr [ebx],cx
   0x77f24228  0f85d jne          _CompareStringW@24+000001e5
   0x77f2422e  66833 cmp          word ptr [edx],00
   0x77f24232  0f84c je           _CompareStringW@24+000001e5
   0x77f24238  8345e add          dword ptr [ebp-18],02
   0x77f2423c  83c20 add          edx,02
   0x77f2423f  8b4de mov          ecx,dword ptr [ebp-18]

   *----> Stack Back Trace <----*
   FramePtr  RetAddr   Param1   Param2   Param3   Function Name
   0184fb0c  77f26bc3  00000409 00000001 00030002
   KERNEL32!CompareStringW+0x105
   0184fb28  02012a5c  00030002 00177008 0184fb90 KERNEL32!lstrcmpiW+0x19
   0184fb38  02025d17  00177008 00000000 0184fc1c
   MAD!CString::strcmpi+0xf(0x00177008)
   0184fb90  02025925  002dff00 0184fbdc 002dfcc4
   MAD!CRecipProxyBuilder::ScRealGetProxies+0x306(0x002DFF00, 0x0184FBDC,
   0x002DFCC4, 0x00000001, 0x00000001, 0x00000000, 0x0184FBF0, 0x0184FBD0,
   0x0184FBF4, 0x0184FBD8, 0x0184FBD4)
   0184fbfc  0201cecc  002d1f38 002dff00 0184fc1c
   MAD!CRecipProxyBuilder::ScGetProxies+0x13a(0x002D1F38, 0x002DFF00,
   0x0184FC1C)
   0184fce4  0201f4c2  0184fee8 00164908 00164a8c
   MAD!EcGetProxies+0x85d(0x0184FEE8, 0x00164908, 0x00164A8C)
   0184fde4  77e613ae  0184ff30 0184fe6c 00000000
   MAD!TriggerPublicRPC_EcGetProxies+0xd8(0x0184FF30)
   0184fe20  77e61306  0201f3ea 0184ff30 0184ff5c
   RPCRT4!DispatchToStubInC+0x34
   0184fe74  77e61527  0184ff30 00000000 0184ff5c
   RPCRT4!?DispatchToStubWorker@RPC_INTERFACE@@AAEJPAU_RPC_MESSAGE@@IPAJ@Z
   +0xa4
   0184fe94  77e7db5e  0184ff30 00000000 0184ff5c
   RPCRT4!?DispatchToStub@RPC_INTERFACE@@QAEJPAU_RPC_MESSAGE@@IPAJ@Z+0x42
   0184fec4  77e6e1b0  0184ff30 0184ff08 00000000
   RPCRT4!?DispatchToStubWithObject@RPC_INTERFACE@@QAEJPAU_RPC_MESSAGE
   @@PAVRPC
   _UUID@@IPAJ@Z+0xb3
   0184ff64  77e62479  00166e60 00166f60 00168f18
   RPCRT4!?DealWithRequestMessage@LRPC_ASSOCIATION@@QAEXPAT_LRPC_MESSAGE
   @@0@Z+
   0xc019
   0184ff8c  77e6214f  77e63b24 0014bc98 00000000
   RPCRT4!?ReceiveLotsaCalls@LRPC_ADDRESS@@AAEXXZ+0xea
   0184ff90  77e63b24  0014bc98 00000000 001677d0
   RPCRT4!?RecvLotsaCallsWrapper@@YGXPAVLRPC_ADDRESS@@@Z+0x9
   0184ffac  77e63b5b  00168f18 0014000c 77f26c2a
   RPCRT4!?BaseCachedThreadRoutine@@YGXPAVCACHED_THREAD@@@Z+0xae
   0184ffb8  77f26c2a  001677d0 00000000 0014000c
   RPCRT4!?ThreadStartRoutine@@YGJPAVTHREAD@@@Z+0x16
   0184ffec  00000000  77e63b45 001677d0 00000000
   KERNEL32!BaseThreadStart+0x61