module

CMS Made Simple Authenticated RCE via object injection

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Disclosed
03/26/2019
Created
11/13/2019

Description

An issue was discovered in CMS Made Simple 2.2.8.
In the module DesignManager (in the files action.admin_bulk_css.php
and action.admin_bulk_template.php), with an unprivileged user
with Designer permission, it is possible to reach an unserialize
call with a crafted value in the m1_allparms parameter,
and achieve object injection.

This module has been successfully tested on CMS Made Simple versions
2.2.6, 2.2.7, 2.2.8, 2.2.9 and 2.2.9.1.

Author

Daniele Scanu danielescanu20

Platform

PHP

Architectures

php

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/cmsms_object_injection_rce
    msf /(e) > show actions
        ...actions...
    msf /(e) > set ACTION < action-name >
    msf /(e) > show options
        ...show and set options...
    msf /(e) > run
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