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Pimcore Unserialize RCE

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Pimcore Unserialize RCE

Disclosed
03/11/2019
Created
04/29/2019

Description

This module exploits a PHP unserialize() in Pimcore before 5.7.1 to execute arbitrary code. An authenticated user with "classes" permission could exploit the vulnerability. The vulnerability exists in the "ClassController.php" class, where the "bulk-commit" method makes it possible to exploit the unserialize function when passing untrusted values in "data" parameter. Tested on Pimcore 5.4.0-5.4.4, 5.5.1-5.5.4, 5.6.0-5.6.6 with the Symfony unserialize payload. Tested on Pimcore 4.0.0-4.6.5 with the Zend unserialize payload.

Author(s)

  • Daniele Scanu
  • Fabio Cogno

Platform

PHP

Architectures

php

Development

References

Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':

msf > use exploit/multi/http/pimcore_unserialize_rce
msf exploit(pimcore_unserialize_rce) > show targets
    ...targets...
msf exploit(pimcore_unserialize_rce) > set TARGET < target-id >
msf exploit(pimcore_unserialize_rce) > show options
    ...show and set options...
msf exploit(pimcore_unserialize_rce) > exploit

Time is precious, so I don’t want to do something manually that I can automate. Leveraging the Metasploit Framework when automating any task keeps us from having to re-create the wheel as we can use the existing libraries and focus our efforts where it matters.

– Jim O’Gorman | President, Offensive Security

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