full-disclosure - Java Applets can connect to other hosts using HTTP 302 redirection

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Message-Id: <20071003111841.EDE6.ANVIL@jumperz.net>
Date: Wed, 03 Oct 2007 11:28:40 +0900
From: Kanatoko <anvil@...perz.net>
To: full-disclosure@...ts.grok.org.uk
Subject: Java Applets can connect to other hosts using
	HTTP 302 redirection

It seems that the java applet located on the host A is allowed to
connect to the host B using HTTP 302 redirection on the host B.

Is it a normal behaviour?

PoC:
http://www.jumperz.net/exploits/appletTest1.jsp

host A: www.gyosatu.com
host B: www.jumperz.net

In this PoC, the java applet is downloaded from www.gyosatu.com and
connects to www.jumperz.net port 1111.

Use "tcpdump port 1111" to see the packets.

-- 
Kanatoko<anvil@...perz.net>
Open Source WebAppFirewall
http://guardian.jumperz.net/

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