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Date: Mon, 13 Aug 2007 17:36:07 +0200
From: Keepp the secret <keep.the.secret.secret@...il.com>
To: full-disclosure@...ts.grok.org.uk
Subject: Flaw in google redirection url
Hy,
there is a flaw in a google redirection url that can allow a
redirection on any website from an url begining by http://
www.google.com...
Here is the link:
http://www.google.com/url?q=http://whmt.blogspot.com/&sa=D&sntz=1&usg=1'
This link will redirect you on my blog(http://whmt.blogspot.com/).
(It's safe)
The flaw is in the variable usg that you can corrupt by writing
usg=1'. It will allow any redirection.(And could be used for phishing)
See you soon.
Clement.
-_WHMT_-
Content of type "text/html" skipped
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