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Q222621: XADM: Buffer Is Not Cleared in Exchange LDAP Service

Article: Q222621
Product(s): Microsoft Exchange
Version(s): winnt:5.5,5.5 SP1,5.5 SP2
Operating System(s): 
Keyword(s): exc55 exc55sp1 exc55sp2 EXC55SP3Fix
Last Modified: 22-DEC-1999

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The information in this article applies to:

- Microsoft Exchange Server, versions 5.5, 5.5 SP1, 5.5 SP2 
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SYMPTOMS
========

If you use Telnet to connect to Transmission Control Protocol (TCP) port 3389,
you may experience either of the following symptoms:

- If you send an invalid Lightweight Directory Access Protocol (LDAP) command,
  the Exchange Server computer may store all the data you send in a buffer
  until you end the connection, rather than clearing the buffer after the
  invalid command is sent. This could eventually cause the server to run out of
  memory.

- If you send an LDAP bind request with a Distinguished Name that is longer
  than 1 KB, the directory service may stop unexpectedly.

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: Directory

+--------------------------+
| File name   | Version    | 
+--------------------------+
| Dsamain.exe | 5.5.2575.0 | 
+--------------------------+


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.

Additional query words: denial of service memory leak

======================================================================
Keywords          : exc55 exc55sp1 exc55sp2 EXC55SP3Fix 
Technology        : kbExchangeSearch kbExchange550 kbZNotKeyword2 kbExchange550SP1 kbExchange550SP2
Version           : winnt:5.5,5.5 SP1,5.5 SP2
Issue type        : kbbug
Solution Type     : kbfix

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

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