by r0t,der4444,cembo,VietMafia

Saturday, March 25, 2006

XSS in <= Toast Forums 1.6

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Vuln. discovered by : r0t
Date: 25 march 2006
vendor:http://www.toastforums.com/
affected versions: 1.6 and prior
###############################################

Vuln. Description.

Toast Forums contains a flaw that allows a remote cross site scripting attack. This flaw exists because input passed to "author","subject","message","dayprune" paremters isn't properly sanitised before being returned to the user.
This could allow a user to create a specially crafted URL that would execute arbitrary code in a user's browser within the trust relationship between the browser and the server, leading to a loss of integrity.



/toast.asp?action=posts&sub=search&fid=
-1&author=[XSS]

/toast.asp?action=posts&sub=search&fid=
-1&author=r0t&subject=[XSS]

/toast.asp?action=posts&sub=search&fid=
-1&author=r0t&subject=&message=[XSS]


/toast.asp?action=posts&sub=search&fid=
-1&author=r0t&subject=&message=&dayprune=[XSS]
###############################################

Solution:
Edit the source code to ensure that input is properly sanitised.
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More information @ wwww.unsecured-systems.com/forum/

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