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XSS vulnerability
From: "Heng Kuo Kuang Kelvin NCS" <kuokuang () ncs com sg>
Date: Fri, 14 Dec 2007 10:54:51 +0800

I tried to google for XSS vulnerability, how to hack, how to prevent,
etc. However, I have no any meaningful information for me to work with.

Actually, I am supposed to address some XSS vulnerability on some of the
in-house application developed by 3rd party vendor. My web server is
already patched to its latest version, however the coding in the
application is subjected to XSS vulnerability, I would like to do
something about it rather than waiting for the application developer to
rewrite the application.

Can anyone of you help me by giving me some guidance?

1) What kind of pattern will I be able to pick up from my web server
logs to show that there is XSS attacks against my web server?
2) How can I prevent XSS from attacking my web servers [Apache, Sun One,
IIS 5 & 6] without having to change the application coding? 
3) How can I test for XSS vulnerability on my web servers?

Any information will be greatly appreciated. 

Thanks in advance

Kelvin Heng

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