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An attacker might get administrative access to a web application. However, this does not automatically mean that the web server can be compromised. In cases where a SaaS application is made available to users, it is routine to give each user admin access to his own instance of the web application e.g. a managed hosted Wordpress site. In such scenario, the attacker who will begin accessing the application as a managed administrative user will have to figure out how to exploit the administrative interface to get a shell on the server. In some cases, it might be possible to do privilege escalation as well.
In the exercise below, the attacker has administrative access to the web application and needs to find a remote code execution attack to run arbitrary commands on the server.
CMS Made Simple is a free, open source content management system to manage websites or web portals written in PHP.
CMS Made Simple (2.2.5) is vulnerable to a Remote Code Execution documented in CVE-2018-1000094.
CVE is a registered trademark of The MITRE Corporation.
All relevant information to solve this lab is available on the CVE website.
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