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.
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_rcemsf undefined(object_injection_rce) > show actions ...actions...msf undefined(object_injection_rce) > set ACTION < action-name >msf undefined(object_injection_rce) > show options ...show and set options...msf undefined(object_injection_rce) > runPrioritise with Active Threat Intelligence
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