Mutillidae - Application Log Injection (Source Code Viewer)

Mutillidae – Application Log Injection (Source Code Viewer)

In this walk through, we will be going through the Application Log Injection (Source Code Viewer) vulnerability section from Mutillidae Labs. We will be exploring and exploiting Application Log Injection in Source Code Viewer utility and learn how application are affected because of it. So, let’s get started with the Hacking without any delay.

Application Log Injection (Source Code Viewer)

Security Level: 0 (Hosed)

  • Setting the security level to 0 or Hosed.

Security level 0

  • The application has a drop down functionality to select a source code file and display the contents of it below.

Source code viewer

Source code

  • I intercepted the request via Burpusite and changed the display file to /etc/passwd file which gives us the below result.

Injecting payload

Dumping contents of /etc/passwd

Also Read: Mutillidae – Application Log Injection (Login)



So, we finally completed all the security levels for the Mutillidae Application Log Injection (Source Code Viewer) Vulnerability. We looked into the various ways how application has been set up in various levels and how we can bypass the security controls implemented. Next, we can mitigate the potential Application Log Injection attacks by performing input sanitization on endpoints, whitelist the allowed characters in the input and using a WAF. Along with that, we can prevent data from any untrusted source to be dynamically written to the HTML document. On that note, i will take your leave and will meet you in next one with another Mutillidae vulnerability writeup, till then “Keep Hacking”.

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