module
Serv-U FTP Server prepareinstallation Privilege Escalation
| Disclosed | Created |
|---|---|
| 06/05/2019 | 07/02/2019 |
Disclosed
06/05/2019
Created
07/02/2019
Description
This module attempts to gain root privileges on systems running
Serv-U FTP Server versions prior to 15.1.7.
The `Serv-U` executable is setuid `root`, and uses `ARGV[0]`
in a call to `system()`, without validation, when invoked with
the `-prepareinstallation` flag, resulting in command execution
with root privileges.
This module has been tested successfully on Serv-U FTP Server
version 15.1.6 (x64) on Debian 9.6 (x64).
Serv-U FTP Server versions prior to 15.1.7.
The `Serv-U` executable is setuid `root`, and uses `ARGV[0]`
in a call to `system()`, without validation, when invoked with
the `-prepareinstallation` flag, resulting in command execution
with root privileges.
This module has been tested successfully on Serv-U FTP Server
version 15.1.6 (x64) on Debian 9.6 (x64).
Authors
Guy Levinbcoles
Platform
Linux
Architectures
x86, x64, armle, aarch64, ppc, mipsle, mipsbe
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/linux/local/servu_ftp_server_prepareinstallation_priv_esc
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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