Microsoft KB Archive/222621

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

Article ID: 222621

Article Last Modified on 10/26/2006

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APPLIES TO


 * Microsoft Exchange Server 5.5 Standard Edition
 * Microsoft Exchange Server 5.5 Service Pack 1
 * Microsoft Exchange Server 5.5 Service Pack 2

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This article was previously published under Q222621





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, click the following article number to view the article in the Microsoft Knowledge Base:

191014 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



STATUS
Microsoft has confirmed that this is 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: kbbug kbfix kbqfe KB222621

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