A-CART Input Validation Flaw in 'signin.asp' Permits Remote Cross-Site Scripting Attacks
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SecurityTracker Alert ID: 1007826
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CVE Reference: GENERIC-MAP-NOMATCH
(Links to External Site)
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Date: Sep 27 2003
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Impact: Disclosure of authentication 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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Advisory: Zone-H
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Version(s): 2.0 and Pro
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Description: G00db0y from Zone-h Security Team reported an input validation vulnerability in A-CART. A remote user can conduct cross-site scripting attacks.
It is reported that the 'signin.asp' script does not properly filter HTML code from user-supplied input in the 'msg' variable. 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 A-CART 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]/acartpath/signin.asp?msg=<script>alert('Zone-h')</script>
The
vendor has reportedly been notified.
The original Zone-h advisory is available at:
http://www.zone-h.org/en/advisories/read/id=3156/
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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
vulnerable A-CART 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.
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Solution: No solution was available at the time of this entry.
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Vendor URL: www.alanward.net/acart/ (Links to External Site)
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Cause: Input validation error
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Underlying OS: Windows (Any)
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Reported By: <G00db0y@zone-h.org>
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Message History:
None.
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Source Message Contents
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Date: Sat, 27 Sep 2003 17:59:04 +0200
From: <G00db0y@zone-h.org>
Subject: ZH2003-29SA (security advisory): A-Cart 2.0 and A-Cart Pro XSS Vulnerability
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ZH2003-29SA (security advisory): A-Cart 2.0 and A-Cart Pro XSS Vulnerability
Published: 27 september 2003
Released: 27 september 2003
Name: A-Cart
Affected Systems: 2.0 and Pro
Issue: Remote attackers can inject XSS script
Author: G00db0y@zone-h.org
Vendor: http://www.alanward.net/
Description
***********
Zone-h Security Team has discovered a flaw in A-Cart v2.0 and in A-Cart Pro (and older
versions?). "A-CART is a cost efficint solution to your shopping cart needs."
Details
*******
It's possibile to inject XSS script in msg variable in the signin.asp file
For example try this:
http://examplesite/acartpath/signin.asp?msg=<script>alert('Zone-h')</script>
Solution:
*********
The vendor has been contacted and a patch is not produced yet
Suggestions:
************
Filter the msg variable.
G00db0y - www.zone-h.org admin
Original advisory here: http://www.zone-h.org/en/advisories/read/id=3156/
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