module
Moodle Remote Command Execution
| Disclosed | Created |
|---|---|
| 10/30/2013 | 05/30/2018 |
Disclosed
10/30/2013
Created
05/30/2018
Description
Moodle allows an authenticated user to define spellcheck settings via the web interface.
The user can update the spellcheck mechanism to point to a system-installed aspell binary.
By updating the path for the spellchecker to an arbitrary command, an attacker can run
arbitrary commands in the context of the web application upon spellchecking requests.
This module also allows an attacker to leverage another privilege escalation vuln.
Using the referenced XSS vuln, an unprivileged authenticated user can steal an admin sesskey
and use this to escalate privileges to that of an admin, allowing the module to pop a shell
as a previously unprivileged authenticated user.
This module was tested against Moodle version 2.5.2 and 2.2.3.
The user can update the spellcheck mechanism to point to a system-installed aspell binary.
By updating the path for the spellchecker to an arbitrary command, an attacker can run
arbitrary commands in the context of the web application upon spellchecking requests.
This module also allows an attacker to leverage another privilege escalation vuln.
Using the referenced XSS vuln, an unprivileged authenticated user can steal an admin sesskey
and use this to escalate privileges to that of an admin, allowing the module to pop a shell
as a previously unprivileged authenticated user.
This module was tested against Moodle version 2.5.2 and 2.2.3.
Author
Brandon Perry
Platform
Linux,Unix
Architectures
cmd
References
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_cmd_exec
msf /(c) > show actions
...actions...
msf /(c) > set ACTION < action-name >
msf /(c) > show options
...show and set options...
msf /(c) > run
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.