This Metasploit module exploits an authenticated remote code execution vulnerability in Cayin CMS versions 11.0 and below. The code execution is executed in the system_service.cgi file's ntpIp Parameter. The field is limited in size, so repeated requests are made to achieve a larger payload. Cayin CMS-SE is built for Ubuntu 16.04 (20.04 failed to install correctly), so the environment should be pretty set and not dynamic between targets. Results in root level access.
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