exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

iDEFENSE Security Advisory 2007-05-08.4

iDEFENSE Security Advisory 2007-05-08.4
Posted May 10, 2007
Authored by iDefense Labs, Joxean Koret | Site idefense.com

iDefense Security Advisory 05.08.07 - Remote exploitation of an integer overflow vulnerability in the IMAP service of Microsoft Exchange 2000 could allow a remote attacker to crash all running Exchange services and other services in the same process. The vulnerability specifically exists in code responsible for reading of literals in the IMAP4 service. When the IMAP4 service encounters a specially crafted literal, it fails to properly process it. An access violation occurs causing an unhandled exception that terminates the process. iDefense confirmed the existence of this vulnerability in Microsoft Exchange 2000 with Service Pack 3.

tags | advisory, remote, overflow, imap
advisories | CVE-2007-0221
SHA-256 | fced1ee1ae6edabb2f453b8dea3d929f5b5acd4a65d224dfbf4d2976fa6ca9cb

iDEFENSE Security Advisory 2007-05-08.4

Change Mirror Download
Microsoft Exchange Server 2000 IMAP Literal Processing DoS Vulnerability

iDefense Security Advisory 05.08.07
http://labs.idefense.com/intelligence/vulnerabilities/
May 08, 2007

I. BACKGROUND

Microsoft Exchange Server 2000 is a messaging product developed by
Microsoft, part of the Windows Server System line of server products.
More information about it can be found at the following URL.

http://www.microsoft.com/technet/prodtechnol/exchange/2000/default.mspx

II. DESCRIPTION

Remote exploitation of an integer overflow vulnerability in the IMAP
service of Microsoft Exchange 2000 could allow a remote attacker to
crash all running Exchange services and other services in the same
process.

The vulnerability specifically exists in code responsible for reading of
literals in the IMAP4 service. When the IMAP4 service encounters a
specially crafted literal, it fails to properly process it. An access
violation occurs causing an unhandled exception that terminates the
process.

III. ANALYSIS

Exploitation of this vulnerability allows an attacker to cause the
affected server to restart or potentially require data to be
reinstalled from backup.

As the Exchange server may run in the same process space as many other
servers, crashing the IMAP4 component will also cause the SMTP, POP3,
WWW and FTP services, if enabled, to exit. In order to exploit this
vulnerability, the attacker must have access to establish a TCP session
with the IMAP4 service.

IV. DETECTION

iDefense confirmed the existence of this vulnerability in Microsoft
Exchange
2000 with Service Pack 3.

V. WORKAROUND

iDefense is not currently aware of any effective workarounds for this
vulnerability. Consider applying network access controls on this
service.

VI. VENDOR RESPONSE

Microsoft has addressed this vulnerability within MS07-026. For more
information, consult their bulletin at the following URL.

http://www.microsoft.com/technet/security/Bulletin/MS07-026.mspx

VII. CVE INFORMATION

The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2007-0221 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org/), which standardizes names for
security problems.

VIII. DISCLOSURE TIMELINE

01/10/2007 Initial vendor notification
01/22/2007 Initial vendor response
05/08/2007 Coordinated public disclosure

IX. CREDIT

This vulnerability was reported to iDefense by Joxean Koret.

Get paid for vulnerability research
http://labs.idefense.com/methodology/vulnerability/vcp.php

Free tools, research and upcoming events
http://labs.idefense.com/

X. LEGAL NOTICES

Copyright © 2007 iDefense, Inc.

Permission is granted for the redistribution of this alert
electronically. It may not be edited in any way without the express
written consent of iDefense. If you wish to reprint the whole or any
part of this alert in any other medium other than electronically,
please e-mail customerservice@idefense.com for permission.

Disclaimer: The information in the advisory is believed to be accurate
at the time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS condition.
There are no warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct,
indirect, or consequential loss or damage arising from use of, or
reliance on, this information.
Login or Register to add favorites

File Archive:

April 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Apr 1st
    10 Files
  • 2
    Apr 2nd
    26 Files
  • 3
    Apr 3rd
    40 Files
  • 4
    Apr 4th
    6 Files
  • 5
    Apr 5th
    26 Files
  • 6
    Apr 6th
    0 Files
  • 7
    Apr 7th
    0 Files
  • 8
    Apr 8th
    22 Files
  • 9
    Apr 9th
    14 Files
  • 10
    Apr 10th
    10 Files
  • 11
    Apr 11th
    13 Files
  • 12
    Apr 12th
    14 Files
  • 13
    Apr 13th
    0 Files
  • 14
    Apr 14th
    0 Files
  • 15
    Apr 15th
    30 Files
  • 16
    Apr 16th
    10 Files
  • 17
    Apr 17th
    22 Files
  • 18
    Apr 18th
    45 Files
  • 19
    Apr 19th
    0 Files
  • 20
    Apr 20th
    0 Files
  • 21
    Apr 21st
    0 Files
  • 22
    Apr 22nd
    0 Files
  • 23
    Apr 23rd
    0 Files
  • 24
    Apr 24th
    0 Files
  • 25
    Apr 25th
    0 Files
  • 26
    Apr 26th
    0 Files
  • 27
    Apr 27th
    0 Files
  • 28
    Apr 28th
    0 Files
  • 29
    Apr 29th
    0 Files
  • 30
    Apr 30th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close