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Webmin

xml-external-entity | Level: Easy  | Total Lab Runs: 0 | Premium Lab

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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 an XML external entity attack to retrieve sensitive information from the server.

A version of Webmin is vulnerable to an XML External Entity attack. The following username and passwords may be used to explore the application and/or find a vulnerability which might require authenticated access:

UsernamePassword
adminpassword1

Objective: Your task is to find and exploit this vulnerability.

The following activities are strictly prohibited on this website unless otherwise explicitly stated as allowed in the mission statement:

  • Using automated scanners
  • Using brute force attacks
  • Denial of Service attacks
  • Attacking other student machines in challenges where you might achieve a shell on the vulnerable system
  • Attacking the lab infrastructure

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