Adobe Macromedia ColdFusion is an application server and development framework for websites. More information is available at the following URL.
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.
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.
iDefense has confirmed this vulnerability exists in Adobe Macromedia ColdFusion MX 7.0.2, with all available fixes, running on Microsoft IIS vulnerable.
iDefense is unaware of any effective workarounds for this vulnerability.
Adobe has released a patch for this issue. For more information consult their advisory at the link below.
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.
11/08/2006 Initial vendor notification
11/09/2006 Initial vendor response
01/09/2007 Coordinated public disclosure
This vulnerability was reported to iDefense by Inge Henriksen.
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Copyright © 2006 Verisign, Inc.
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