Description
This module exploits a File Upload vulnerability that lead in a RCE in Showtime2 module (<= 3.6.2) in CMS Made Simple (CMSMS). An authenticated user with "Use Showtime2" privilege could exploit the vulnerability.
The vulnerability exists in the Showtime2 module, where the class "class.showtime2_image.php" does not ensure that a watermark file has a standard image file extension (GIF, JPG, JPEG, or PNG).
Tested on Showtime2 3.6.2, 3.6.1, 3.6.0, 3.5.4, 3.5.3, 3.5.2, 3.5.1, 3.5.0, 3.4.5, 3.4.3, 3.4.2 on CMS Made Simple (CMSMS) 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_showtime2_rcemsf undefined(cmsms_showtime2_rce) > show actions ...actions...msf undefined(cmsms_showtime2_rce) > set ACTION < action-name >msf undefined(cmsms_showtime2_rce) > show options ...show and set options...msf undefined(cmsms_showtime2_rce) > runPrioritise with Active Threat Intelligence
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