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Secunia Research 18/11/2005
- MailEnable Buffer Overflow and Directory Traversal Vulnerabilities -
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Table of Contents
Affected Software....................................................1
Severity.............................................................2
Description of Vulnerability.........................................3
Solution.............................................................4
Time Table...........................................................5
Credits..............................................................6
References...........................................................7
About Secunia........................................................8
Verification.........................................................9
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1) Affected Software
* MailEnable Professional version 1.6 with Hotfix
MEIMAPS-UPD0511010000.zip applied.
* MailEnable Enterprise version 1.1 with Hotfix
MEIMAPS-UPD0511010000.zip applied.
Prior versions may also be affected.
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2) Severity
Rating: Moderately Critical
Impact: System access
Where: Remote
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3) Description of Vulnerability
Secunia Research has discovered some vulnerabilities in Mail Enable
Professional/Enterprise, which can be exploited by malicious users to
cause a DoS (Denial of Service) and to compromise a vulnerable system.
1) A boundary error exists in the IMAP service (MEIMAPS.EXE) when
handling an overly long mailbox name passed to "select", "create",
"delete", "rename", "subscribe", and "unsubscribe" commands. This can
be exploited by a malicious user to cause a stack-based buffer
overflow and allows arbitrary code execution.
2) Directory traversal error exists in the IMAP service (MEIMAP.EXE)
when handling specially crafted mailbox name passed to the "create"
and "rename" commands. This can be exploited by a malicious user to
create arbitrary directories on the server, or to cause a DoS by
renaming the mail directories of other users.
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4) Solution
Apply cumulative update (ME-10008):
http://www.mailenable.com/hotfix/ME-10008.EXE
The vulnerabilities have also been fixed in MailEnable Professional
Edition version 1.7.
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5) Time Table
07/11/2005 - Initial vendor notification.
08/11/2005 - Initial vendor reply.
18/11/2005 - Vendor released patches.
18/11/2005 - Public disclosure.
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6) Credits
Discovered by Tan Chew Keong, Secunia Research.
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7) References
MailEnable:
http://www.mailenable.com/hotfix/
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8) About Secunia
Secunia collects, validates, assesses, and writes advisories regarding
all the latest software vulnerabilities disclosed to the public. These
advisories are gathered in a publicly available database at the
Secunia website:
http://secunia.com/
Secunia offers services to our customers enabling them to receive all
relevant vulnerability information to their specific system
configuration.
Secunia offers a FREE mailing list called Secunia Security Advisories:
http://secunia.com/secunia_security_advisories/
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9) Verification
Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2005-59/advisory/
Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/
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