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Home » Hacking News » Macromedia ColdFusion/JRun Remote SYSTEM Buffer Overflow Vulnerabilities

Macromedia ColdFusion/JRun Remote SYSTEM Buffer Overflow Vulnerabilities

by Nikola Strahija on November 12th, 2002 Systems Affected: Macromedia Coldfusion 6.0 and prior (IIS ISAPI) Macromedia JRun 4.0 and prior (IIS ISAPI)


Description:
Macromedia JRun and ColdFusion IIS ISAPI handlers contain various heap
overflows when handling URI filenames. By supplying a filename over 4096
bytes in size, heap memory can be overwritten. Various structures can be
overwritten in the process heap to gain control of the remote IIS process
with SYSTEM level access. This makes it rather trivial for attackers to
remotely compromise Microsoft IIS web servers running vulnerable versions of
Macromedia Coldfusion or JRun.

The following requests can be used to duplicate the attack.

For JRun:
telnet example.com 80
GET /[+4096 byte buffer].jsp HTTP/1.0
[enter]
[enter]

For Coldfusion:
telnet example.com 80
GET /[+4096 byte buffer].cfm HTTP/1.0
[enter]
[enter]

During testing, 5000 bytes was sufficient to begin overwriting data
structures that made exploitation straightforward. The vulnerabilities exist
in error handling within the ISAPI filters.

Protection:
eEye Digital Security customers using SecureIIS are protected from the
exploitation of this vulnerability.
http://www.eeye.com/SecureIIS

Vendor Status:
Macromedia has released patches for both the JRun and Coldfusion products.
ColdFusion MX Advisory:
http://www.macromedia.com/v1/handlers/index.cfm?ID=23161
JRun Advisory:
http://www.macromedia.com/v1/handlers/index.cfm?ID=23500

Credit: Riley Hassell, Research Engineer - eEye Digital Security

Greetings: Eli, Kasia, Jenn, Hx2, and the all the crazy kiwi's with hackfu

Copyright (c) 1998-2002 eEye Digital Security
Permission is hereby granted for the redistribution of this alert
electronically. It is not to be edited in any way without express consent of
eEye. If you wish to reprint the whole or any part of this alert in any
other medium excluding electronic medium, please e-mail [email protected] for
permission.

Disclaimer
The information within this paper may change without notice. Use of this
information constitutes acceptance for use in an AS IS condition. There are
NO warranties with regard to this information. In no event shall the author
be liable for any damages whatsoever arising out of or in connection with
the use or spread of this information. Any use of this information is at the
user's own risk.

Feedback
Please send suggestions, updates, and comments to:

eEye Digital Security
http://www.eEye.com
[email protected]



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