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Files from Cillian Collins

MyBB Admin Control Remote Code Execution

Posted May 31, 2022

Authored by Christophe de la Fuente, Altelus, Cillian Collins | Site metasploit.com

This Metasploit module exploits an improper input validation vulnerability in MyBB versions prior to 1.8.30 to execute arbitrary code in the context of the user running the application. The MyBB Admin Control setting page calls the PHP eval function with unsanitized user input. The exploit adds a new setting, injecting the payload in the vulnerable field, and triggers its execution with a second request. Finally, it takes care of cleaning up and removes the setting. Note that authentication is required for this exploit to work and the account must have rights to add or update settings (typically, the myBB administrator role).

tags | exploit, arbitrary, php

advisories | CVE-2022-24734

SHA-256 | b59589e32d8e76fd8a874fc6ea8f9b40d067ee43017c9072165e2a8ca889d7de

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