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Category:   Application (E-mail Server)  >   Eudora WorldMail Server Vendors:   Qualcomm
Eudora WorldMail Server Directory Traversal in IMAP Server Lets Remote Authenticated Users Read Arbitrary E-mail Messages
SecurityTracker Alert ID:  1015236
SecurityTracker URL:
CVE Reference:   CVE-2005-3189   (Links to External Site)
Date:  Nov 17 2005
Impact:   Disclosure of user information
Exploit Included:  Yes  
Version(s): 3.0
Description:   iDEFENSE reported a vulnerability in Eudora WorldMail Server. A remote authenticated user can view and delte arbitrary e-mail messages on the target system.

A remote authenticated user can supply a specially crafted 'select' command containing '../' directory traversal characters to view any e-mail message stored on the target mail server. The remote authenticated user can also delete the messages and may be able to move arbitrary folders on the target system.

The vendor was notified on October 12, 2005, without response.

The original advisory is available at:

Impact:   A remote authenticated user can view and delete arbitrary e-mail messages on the target system.
Solution:   No solution was available at the time of this entry.
Vendor URL: (Links to External Site)
Cause:   Access control error, Input validation error
Underlying OS:  Windows (Any)

Message History:   None.

 Source Message Contents

Subject:  iDEFENSE Security Advisory 11.17.05: Qualcomm WorldMail IMAP Server

Qualcomm WorldMail IMAP Server Directory Traversal Vulnerability

iDEFENSE Security Advisory 11.17.05
November 17, 2005


Qualcomm WorldMail is an email and messaging server designed for use
in small to large enterprises that supports IMAP, POP3, SMTP, and web
mail features.

More information can be found on the vendors site:


Remote exploitation of a directory transversal vulnerability in Qualcomm
WorldMail IMAP Server allows attackers to read any email stored on the

The IMAP protocol supports the use of multiple folders and contains
commands with allow users to specify specific paths. Qualcomm WorldMail
server allows multiple commands to specify folders outside of the
current user's mailbox.

Attackers can leverage this vulnerability to view and manage any other
user's email messages stored on the system. Attackers also have the
ability to move any arbitrary folder on the system.

Exploitation is trivial and can be done with a simple telnet client.
Below is an example transaction highlighting the attack:

c:\> telnet 143

* OK WorldMail IMAP4 Server ready
1 login user1 user1
1 OK LOGIN completed

2 select /inbox
2 OK [READ-WRITE] opened /inbox

2 select ./../../administrator/inbox
* OK [UNSEEN 1] Message 1 is first unseen
2 OK [READ-WRITE] opened ./../../administrator/inbox

2 fetch 1 (RFC822.TEXT)
* 1 FETCH (RFC822.TEXT {131}

this message was sent to administrator


Successful exploitation of this vulnerability allows attackers to view
and delete mail from any user on the system. Attackers may also be able
to affect system stability with the ability to move arbitrary folders on
the affected system.

This is a post authentication exploit. In order to exploit this
vulnerability an attacker would need a valid login to the email server
and the IMAP module would have to be enabled (default).


This exploit was tested against Qualcomm Worldmail server version 3.0.
Other versions may be vulnerable.


As the affected commands cannot be disabled, it is important that only
trusted users be allowed to access the vulnerable mail server.
Exploitation of this vulnerability can only be done after a user is
authenticated to the mail server. Therefore, it is recommended that
login credentials be reviewed to ensure that only trusted users have

WorldMail also supports POP access to email. If disabling the IMAP
service completly is an option, this will also prevent exploitation of
the vulnerability.


Multiple attempts have been made to inform the vendor of this
vulnerability but to date a response has not yet been received.


The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CAN-2005-3189 to this issue. This is a candidate for inclusion in
the CVE list (, which standardizes names for
security problems.


10/12/2005  Initial vendor notification
10/27/2005  Initial vendor response
11/17/2005  Public disclosure


The vulnerability was discovered by FistFuXXer.

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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
email 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.

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