[NT] MetaCart e-Shop Multiple Vulnerabilities

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To: list@securiteam.com
Date: 17 May 2005 10:40:13 +0200

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  MetaCart e-Shop Multiple Vulnerabilities
------------------------------------------------------------------------

SUMMARY

 <http://www.metalinks.com> MetaCart e-Shop is a "shopping cart
application for small businesses and support MSSQL, MS Access and MySQL".
The MetaCart e-Shop product has been found to contain multiple
vulnerabilities ranging from cross site scripting to SQL injection
attacks.

DETAILS

Cross-Site Scripting (XSS)
By issuing a URL such as the following:
http://[url]/mcartlite/productsByCategory.asp?intCatalogID=1
&strCatalog_NAME=<script>alert('test')</script>
An attacker can cause the remote host to include arbitrary HTML and/or
JavaScript.

Vulnerable code in productsByCategory.asp:
strCatalog_name = Request.QueryString("strCatalog_NAME")
..
..
strParam = Response.Write (rsCatalog("catalogID"))
&strCatalog_NAME=Response.Write
(Server.URLEncode(rsCatalog("catalogName"))) &rsCatalog("catalogName")

SQL Injection
By issuing any of the following URLs:
http://[url]/mcartlite/productsByCategory.asp?strSubCatalogID=2'(Sql
Injection)
http://[url]/mcartlite/product.asp?intProdID=1'(SQL Injection)
An attacker can cause the remote host to include arbitrary SQL statements
into the product's existing SQL statements.

Vulnerable code in productsByCategory.asp:
intCatalogID = Request.QueryString("intCatalogID")
..
..
' Build SQL String using the parameters
strSQL = "SELECT productID,productName,productPrice FROM products WHERE
catalogID = '"&strParam&"'"

Vulnerable code in product.asp:
intProdID = Request.QueryString("intProdID")
..
..
Set rsProdInfo = Conn.Execute("SELECT * FROM " & _
"products where productID="&intProdID)
if rsProdInfo.EOF then
Response.Write "Product Number " & intProdID & _
" does not exist."

Solution:
For productsByCategory.asp do the following:
 * Find:
intCatalogID = Request.QueryString("intCatalogID")
After it add:
intCatalogID = Replace(intCatalogID,"'","")

 * Find:
strCatalog_name = Request.QueryString("strCatalog_NAME")
After it add:
strCatalog_name = Replace(strCatalog_NAME,"<","")

For products.asp do the following:
 * Find:
intProdID = Request.QueryString("intProdID")
After it add:
intProdID = Replace(intProdID,"'","")

ADDITIONAL INFORMATION

The information has been provided by <mailto:the_day@echo.or.id> dedi
dwianto.
The original article can be found at:
<http://echo.or.id/adv/adv13-theday-2005.txt>
http://echo.or.id/adv/adv13-theday-2005.txt

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