Description
Moodle version 3.9, 3.8 to 3.8.3, 3.7 to 3.7.6, 3.5 to 3.5.12 and earlier unsupported versions allow for a teacher to exploit chain to RCE. A bug in the privileges system allows a teacher to add themselves as a manager to their own class. They can then add any other users, and thus look to add someone with manager privileges on the system (not just the class). After adding a system manager, a 'loginas' feature is used to access their account. Next the system is reconfigured to allow for all users to install an addon/plugin. Then a malicious theme is uploaded and creates an RCE.
If all of that is a success, we revert permissions for managers to system default and remove our malicoius theme. Manual cleanup to remove students from the class is required.
This module was tested against Moodle version 3.9
Module options
To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':
msf > use exploit/multi/http/moodle/teacher_enrollment_priv_esc_to_rcemsf undefined(teacher_enrollment_priv_esc_to_rce) > show actions ...actions...msf undefined(teacher_enrollment_priv_esc_to_rce) > set ACTION < action-name >msf undefined(teacher_enrollment_priv_esc_to_rce) > show options ...show and set options...msf undefined(teacher_enrollment_priv_esc_to_rce) > runPrioritise with Active Threat Intelligence
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