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In CMS Made Simple (CMSMS) before version 2.2.10, the class.showtime2_image.php component does not properly validate the file extension of watermark files. It allows files with non-standard image extensions to be used as watermarks, rather than restricting to GIF, JPG, JPEG, or PNG formats. This improper validation could allow an attacker to upload or use files with unexpected or potentially dangerous extensions.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository contains a single Metasploit module (cmsms_showtime2_rce.rb) that exploits a file upload vulnerability (CVE-2019-9692) in the Showtime2 module (<= 3.6.2) for CMS Made Simple (CMSMS). The exploit requires authentication as a user with the 'Use Showtime2' privilege. The module logs in to the CMSMS admin panel, uploads a PHP payload disguised as a watermark image, and then executes the payload by accessing it via the web server. The exploit is weaponized, leveraging Metasploit's payload system to provide remote code execution on the target server. The module interacts with several HTTP endpoints, including login, file upload, module version check, and the final payload execution path. The code is written in Ruby and is structured according to Metasploit's exploit module conventions.
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