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AusCERT Update AU-2007.0002 - [Win]
ColdFusion vulnerability allows reading of file contents
11 January 2007

        AusCERT Update Summary
        ----------------------

Product:              ColdFusion MX 7.0.2 and prior
Publisher:            iDefense
Operating System:     Windows
Impact:               Read-only Data Access
Access:               Remote/Unauthenticated
CVE Names:            CVE-2006-5858

Ref:                  ESB-2007.0016

Original Bulletin:    
  http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=466

Comment: iDefense provides some further information about the disclosure
         vulnerability announced by Adobe yesterday, stating that it
         actually allows reading the contents of arbitrary files, not just
         reading directory listings as stated in the Adobe advisory.
         
         In particular, if passwords are either hard-coded or stored in
         web application scripts or data files then this vulnerability
         may increase the risk of further compromise.

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Adobe Macromedia ColdFusion Source Code Disclosure Vulnerability

iDefense Security Advisory 01.09.07
http://labs.idefense.com/intelligence/vulnerabilities/
Jan 09, 2007

I. BACKGROUND

Adobe Macromedia ColdFusion is an application server and development
framework for websites. More information is available at the following
URL.

http://www.adobe.com/products/coldfusion/

II. DESCRIPTION

Remote exploitation of an input validation vulnerability in Adobe Systems
Inc.'s Macromedia ColdFusion MX 7 may allow an attacker to view file
contents on the server.

The vulnerability specifically exists in that URL encoded filenames will
be decoded by the IIS process and then again by the ColdFusion process. By
supplying a URL containing a double encoded null byte and an extension
handled by ColdFusion, such as '.cfm', it is possible to view the contents
of any file which is not interpreted by ColdFusion.

III. ANALYSIS

Successful exploitation would allow a remote attacker to view the contents
of a file on the affected server. Depending on the layout of the files on
the server, this could include configuration files, source code written in
another scripting language, log files or other data files. Although this
vulnerability does not in itself allow execution of code on the server, it
may allow an attacker to discover sensitive information such as passwords
or to discover vulnerabilities in other scripts on the system or
potentially bypass some security restrictions.

IV. DETECTION

iDefense has confirmed this vulnerability exists in Adobe Macromedia
ColdFusion MX 7.0.2, with all available fixes, running on Microsoft IIS
vulnerable.

V. WORKAROUND

iDefense is unaware of any effective workarounds for this vulnerability.

VI. VENDOR RESPONSE

Adobe has released a patch for this issue. For more information consult
their advisory at the link below.

http://www.adobe.com/support/security/bulletins/apsb07-02.html

VII. CVE INFORMATION

The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2006-5858 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

11/08/2006  Initial vendor notification
11/09/2006  Initial vendor response
01/09/2007  Coordinated public disclosure

IX. CREDIT

This vulnerability was reported to iDefense by Inge Henriksen.

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 © 2006 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.

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===========================================================================
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The University of Queensland
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Qld 4072

Internet Email: auscert@auscert.org.au
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===========================================================================

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