DOCUMENT:Q235372  15-OCT-1999  [exchange]
TITLE   :XADM: Display Name Corrupts and Information Store Stops
PRODUCT :Microsoft Exchange
PROD/VER:winnt:5.5
OPER/SYS:
KEYWORDS:exc55 EXC55SP3Fix

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The information in this article applies to:

 - Microsoft Exchange Server, version 5.5 
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SYMPTOMS
========

When you install Microsoft Exchange Server version 5.5 on a computer running the
Korean version of Windows NT Server 4.0, the Microsoft Exchange Server
Information Store may stop unexpectedly with a stack dump similar to the
following:

   FramePtr RetAddr Param1 Param2 Param3 Function Name
   0e45f688 00433144 000004e4 0000001e 00000010
   STORE!@EcFormatStandardStringProp@36+0x44
   0e45f744 0042b22a 0edba016 00000001 000004e4
   STORE!@EcFormatRecipientRow@44+0x452
   0e45f7b4 0042ae68 000004e4 00000000 0ed453bb STORE!FormatRecipRows+0x316
   0e45f800 004bac13 0ed84d70 00000002 0ed73fe0 STORE!FormatHeader+0x126
   0e45f860 00406958 00000000 000004b0 00147d44 STORE!EcReloadCachedInfo+0x12a
   0ed8b338 0ed8b338 00000001 00000040 00000000 STORE!@EcRpc@16+0x49e

Also, when an English client attempts to open a message, the display name of the
recipient may be corrupt.

CAUSE
=====

The problem only occurs when the recipient's mailbox has a longer alias name in
English than the display name in Korean. When an English client attempts to open
a message whose recipient has a Korean display name, the Information Store
attempts to perform a conversion between the English code page and the Korean
code page, which always fails and returns a string of question marks. The
Information Store will then use the simple display name, which is the same as
the alias name; however, it passes the incorrect parameter of the string length
to the function to allocate the memory for the simple display name, so that the
new display name does not end with "/0." Following access to the new display
name causes the Information Store to stop responding or corrupt the display
name.

RESOLUTION
==========

To resolve this problem, obtain the latest service pack for Exchange Server
version 5.5. For additional information, please see the following article in the
Microsoft Knowledge Base:

   Q191014 XGEN: How to Obtain the Latest Exchange Server 5.5 Service Pack

The English version of this fix should have the following file attributes or
later:

Component: Information Store

+-------------------------+
| File Name  | Version    | 
+-------------------------+
| Store.exe  | 5.5.2639.0 | 
+-------------------------+
| Mdbmsg.dll | 5.5.2639.0 | 
+-------------------------+
| Gapi32.dll | 5.5.2639.0 | 
+-------------------------+
| Netif.dll  | 5.5.2639.0 | 
+-------------------------+


STATUS
======

Microsoft has confirmed this to be a problem in Microsoft Exchange Server
version 5.5. This problem was first corrected in Exchange Server 5.5 Service
Pack 3.

MORE INFORMATION
================

Note: This is an SP3 fix. You must have previously installed Exchange Server 5.5
SP2 on your computer before applying this fix.

Note: Before applying this fix, you must be running Dsamain.exe build 2600.0 or
later. Please see the following article in the Microsoft Knowledge Base for more
information:

   Q230285 XADM: Denial of Service Vulnerability in Store with IMAP or POP3

Additional query words:

======================================================================
Keywords          : exc55 EXC55SP3Fix 
Technology        : kbExchangeSearch kbExchange550 kbZNotKeyword2
Version           : winnt:5.5
Issue type        : kbbug
Solution Type     : kbfix

=============================================================================

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