module
CVE-2022-21999 SpoolFool Privesc
| Disclosed | Created |
|---|---|
| 02/08/2022 | 03/16/2022 |
Disclosed
02/08/2022
Created
03/16/2022
Description
The Windows Print Spooler has a privilege escalation vulnerability that
can be leveraged to achieve code execution as SYSTEM.
The `SpoolDirectory`, a configuration setting that holds the path that
a printer's spooled jobs are sent to, is writable for all users, and it can
be configured via `SetPrinterDataEx()` provided the caller has the
`PRINTER_ACCESS_ADMINISTER` permission. If the `SpoolDirectory` path does not
exist, it will be created once the print spooler reinitializes.
Calling `SetPrinterDataEx()` with the `CopyFiles\` registry key will load the
dll passed in as the `pData` argument, meaning that writing a dll to the `SpoolDirectory`
location can be loaded by the print spooler.
Using a directory junction and UNC path for the `SpoolDirectory`, the exploit
writes a payload to `C:\Windows\System32\spool\drivers\x64\4` and loads it
by calling `SetPrinterDataEx()`, resulting in code execution as SYSTEM.
can be leveraged to achieve code execution as SYSTEM.
The `SpoolDirectory`, a configuration setting that holds the path that
a printer's spooled jobs are sent to, is writable for all users, and it can
be configured via `SetPrinterDataEx()` provided the caller has the
`PRINTER_ACCESS_ADMINISTER` permission. If the `SpoolDirectory` path does not
exist, it will be created once the print spooler reinitializes.
Calling `SetPrinterDataEx()` with the `CopyFiles\` registry key will load the
dll passed in as the `pData` argument, meaning that writing a dll to the `SpoolDirectory`
location can be loaded by the print spooler.
Using a directory junction and UNC path for the `SpoolDirectory`, the exploit
writes a payload to `C:\Windows\System32\spool\drivers\x64\4` and loads it
by calling `SetPrinterDataEx()`, resulting in code execution as SYSTEM.
Authors
Oliver LyakShelby Pace
Platform
Windows
Architectures
x64
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/windows/local/cve_2022_21999_spoolfool_privesc
msf /(c) > show actions
...actions...
msf /(c) > set ACTION < action-name >
msf /(c) > show options
...show and set options...
msf /(c) > run
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