XADM: Display Name Corrupts and Information Store Stops Frequently

ID: Q235372

The information in this article applies to:

Microsoft Exchange Server, version 5.5

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
Version : winnt:5.5
Platform : winnt
Issue type : kbbug