Secunia Research: MailEnable IMAP Service Buffer Overflow Vulnerability
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Secunia Research 11/12/2006
- MailEnable IMAP Service Buffer Overflow Vulnerability -
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Table of Contents
Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10
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1) Affected Software
MailEnable Professional Edition Version 2.35.
NOTE: Other versions may also be affected.
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2) Severity
Rating: Highly Critical
Impact: System Access
Where: From Remote
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3) Vendor's Description of Software
"MailEnable's mail server software provides a powerful, scalable
hosted messaging platform for Microsoft Windows. MailEnable offers
stability, unsurpassed flexibility and an extensive feature set which
allows you to provide cost-effective mail services."
Product Link:
http://www.mailenable.com/default.asp
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4) Description of Vulnerability
Secunia Research has discovered a vulnerability in MailEnable, which
can be exploited by malicious people to compromise a vulnerable
system.
The vulnerability is caused due to a boundary error when processing
data sent to the IMAP server. This can be exploited to cause a
stack-based buffer overflow by first sending a command in the "Not
Authenticated" state (e.g. "login" command) with a specially crafted
parameter to make the IMAP service wait for more incoming data and
then sending an overly long string (greater than 512 bytes).
Successful exploitation allows execution of arbitrary code.
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5) Solution
Apply hotfix ME-10025:
http://www.mailenable.com/hotfix/ME-10025.EXE
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6) Time Table
08/12/2006 - Vendor notified.
08/12/2006 - Vendor response with hotfix information.
11/12/2006 - Public disclosure.
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7) Credits
Discovered by JJ Reyes, Secunia Research.
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8) References
The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2006-6423 for the vulnerability.
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9) About Secunia
Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:
http://corporate.secunia.com/
Secunia also provides a publicly accessible and comprehensive advisory
database as a service to the security community and private
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http://secunia.com/
Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the
security and reliability of software in general:
http://corporate.secunia.com/secunia_research/33/
Secunia regularly hires new skilled team members. Check the URL below
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http://secunia.com/secunia_vacancies/
Secunia offers a FREE mailing list called Secunia Security Advisories:
http://secunia.com/secunia_security_advisories/
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10) Verification
Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2006-73/
Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/
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