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Microsoft Security Bulletin MS00-001 - Critical

Patch Available for "Malformed IMAP Request" Vulnerability

Published: January 04, 2000

Version: 1.0

Originally Posted: January 04, 2000

Summary

Microsoft has released a patch that eliminates a vulnerability in the Microsoft® Commercial Internet System (MCIS) Mail server. The vulnerability could allow a malicious user to remotely cause services on the server to fail, or cause arbitrary code to run on the server.

Frequently asked questions regarding this vulnerability can be found at http://www.microsoft.com/technet/security/bulletin/fq00-001.mspx.

General Information

The IMAP service included in MCIS Mail has an unchecked buffer. If a malformed request containing random data were passed to the service, it could cause the web publishing, IMAP, SMTP, LDAP and other services to crash. If the malformed request contained specially crafted data, it could also be used to run arbitrary code on the server via a classic buffer overrun attack.

Affected Software Versions

  • Microsoft Commercial Internet System 2.0 and 2.5.

Vulnerability Identifier: CVE-2000-0053

More Information

Please see the following references for more information related to this issue.

Obtaining Support on this Issue

This is a fully supported patch. Information on contacting Microsoft Technical Support is available at http://support.microsoft.com/contactussupport/?ws=support.

Acknowledgments

Microsoft thanks Tristan Goode for reporting this issue to us and working with us to protect customers.

Revisions

  • January 04, 2000: Bulletin Created.

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