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Escapade Input Filtering Flaw Lets Remote Users Conduct Cross-Site Scripting Attacks
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SecurityTracker Alert ID: 1007666
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CVE Reference: GENERIC-MAP-NOMATCH
(Links to External Site)
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Date: Sep 9 2003
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Impact: Disclosure of authentication information, Disclosure of system information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
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Exploit Included: Yes
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Description: An input validation vulnerability was reported in Escapade. A remote user can conduct cross-site scripting attacks. A remote user can also determine the installation path.
It is reported that the software does not filter HTML code from user-supplied input when displaying the user-supplied input. A remote
user can create a specially crafted URL that, when loaded by a target user, will cause arbitrary scripting code to be executed by
the target user's browser. The code will originate from the site running the Escapade software and will run in the security context
of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any,
associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site
acting as the target user.
A demonstration exploit URL is provided:
http://[target]/cgi-bin/esp?PAGE=<script>alert(document.domain)</script>
A
remote user can reportedly request a non-existent page (or other invalid variables) to cause the system to return an error message
that displays the installation path. A demonstration exploit URL is provided:
http://[target]/cgi-bin/esp?PAGE=!@#$%
The
vendor has reportedly been notified.
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Impact: A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the
Escapade software, access data recently submitted by the target user via web form to the site, or take actions on the site acting
as the target user.
A remote user can determine the installation path.
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Solution: No solution was available at the time of this entry.
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Vendor URL: www.escapade.org/ (Links to External Site)
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Cause: Exception handling error, Input validation error
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Underlying OS: Linux (Any), UNIX (Any), Windows (Any)
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Reported By: Bahaa Naamneh <b_naamneh@hotmail.com>
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Message History:
None.
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Source Message Contents
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Date: 9 Sep 2003 15:38:20 -0000
From: Bahaa Naamneh <b_naamneh@hotmail.com>
Subject: Escapade Scripting Engine XSS Vulnerability and Path Disclosure
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Escapade Scripting Engine XSS Vulnerability and Path Disclosure
Published: 9 September 2003
Released: 9 September 2003
Affected Systems: Escapade Scripting Engine
Vendor: http://www.escapade.org , http://www.squishedmosquito.com
Issue: Remote attackers can inject XSS script and know the path of the
site.
Description:
============
Escapade, or ESP for short, is a server-side scripting language that
provides an interface to back-end database contents. Specifically
designed to create dynamic information from this data, Escapade can be
used to generate any kind of document - HTML, XML, text, and more.
While server-side scripting is not a new concept, ESP is a breakthrough
product that will enable programmers to much more easily have access to
data in databases in their web pages without having to resort to ASP or
complicated back-end Perl or PHP scripts.
Details:
========
It's possibile to inject XSS script in the method variable.
Example:
http://www.site.com/cgi-bin/esp?PAGE=<script>alert(document.domain)
</script>
It's possible to make a malformed http request for many variables in
Escapade and in doing so trigger an error. The resulting error message
will
disclose potentially sensitive installation path information to the
remote attacker.
Example:
http://www.site.com/cgi-bin/esp?PAGE=!@#$%
Solution:
=========
The vendor has been contacted and a patch is not yet produced.
Suggestions:
============
Filter the method variable (xss problem), filter all variables.
Discovered by / credit:
=======================
Bahaa Naamneh
b_naamneh@hotmail.com
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