Re: Some Web-programmer flaw 'may' result in codeexecution in server side!

["Morning Wood" <se_cur_ity () hotmail com>]

i used to have my UA set to a basic xss script...
many sites are vulnerable to this.
The most troubling is the fact that many web based reporting / log tools
are in html format, thus rendering the UA injection in the browser of the
person reading the logs ( most likely an admin behind the corporate
firewall ),
thus exposing him / her to possible browser based attack scenarios.

cheers,
Donnie Werner
http://exploitlabs.com
http://zone-h.org


----- Original Message ----- 
From: "Bipin Gautam" <gautam.bipin () gmail com>
To: <full-disclosure () lists grok org uk>
Sent: Sunday, April 24, 2005 7:39 PM
Subject: [Full-disclosure] Some Web-programmer flaw 'may' result in
codeexecution in server side!


These days, i've seen a trend in some so-called computer security
related websites. They have a feature to show a summary about the user
in some page in their website

Like;
-----
Real IP:
User Agent:
Transperent Proxy Ip:   etc...

---------

the problem lies when you supply a malicious user agent.

a basic test could be,

User Agent: <h1> Hello World! </h1> or some java script... better try
PHP instead!!!

regads,
bipin
http://bipin.tk
---
Bipin Gautam
http://bipin.tk
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