Ricoh Driver Privilege Escalation
Description
Various Ricoh printer drivers allow escalation of privileges on Windows systems. For vulnerable drivers, a low-privileged user can read/write files within the `RICOH_DRV` directory and its subdirectories. `PrintIsolationHost.exe`, a Windows process running as NT AUTHORITY\SYSTEM, loads driver-specific DLLs during the installation of a printer. A user can elevate to SYSTEM by writing a malicious DLL to the vulnerable driver directory and adding a new printer with a vulnerable driver. This module leverages the `prnmngr.vbs` script to add and delete printers. Multiple runs of this module may be required given successful exploitation is time-sensitive.
Author(s)
- Alexander Pudwill
- Pentagrid AG
- Shelby Pace
Platform
Windows
Architectures
x86, x64
Development
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/windows/local/ricoh_driver_privesc
msf exploit(ricoh_driver_privesc) > show targets
...targets...
msf exploit(ricoh_driver_privesc) > set TARGET < target-id >
msf exploit(ricoh_driver_privesc) > show options
...show and set options...
msf exploit(ricoh_driver_privesc) > exploit
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