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GitHub Repository: rapid7/metasploit-framework
 Path: blob/master/documentation/modules/post/multi/recon/sudo_commands.md
Views: 11788

Description

This module examines the sudoers configuration for the session user and lists the commands executable via sudo.

This module also inspects each command and reports potential avenues for privileged code execution due to poor file system permissions or permitting execution of executables known to be useful for privesc, such as utilities designed for file read/write, user modification, or execution of arbitrary operating system commands.

Note, you may need to provide the password for the session user.

Verification Steps

  1. Start msfconsole

  2. Get a session

  3. use post/multi/recon/sudo_commands

  4. set SESSION [SESSION]

  5. run

  6. You should receive a list of available sudo commands

Options

SESSION

Which session to use, which can be viewed with sessions

SUDO_PATH

Path to sudo executable (default: /usr/bin/sudo)

PASSWORD

Password for the session user

Scenarios

msf5 > use post/multi/recon/sudo_commands
msf5 post(multi/recon/sudo_commands) > set session 1
session => 1
msf5 post(multi/recon/sudo_commands) > set verbose true
verbose => true
msf5 post(multi/recon/sudo_commands) > run

[*] Executing: /usr/bin/sudo -n -l
Matching Defaults entries for wvu on localhost:
    !visiblepw, always_set_home, match_group_by_gid, env_reset, env_keep="COLORS DISPLAY HOSTNAME HISTSIZE KDEDIR LS_COLORS", env_keep+="MAIL PS1 PS2 QTDIR USERNAME LANG LC_ADDRESS LC_CTYPE", env_keep+="LC_COLLATE LC_IDENTIFICATION LC_MEASUREMENT LC_MESSAGES", env_keep+="LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER LC_TELEPHONE", env_keep+="LC_TIME LC_ALL LANGUAGE LINGUAS _XKB_CHARSET XAUTHORITY", secure_path=/sbin\:/bin\:/usr/sbin\:/usr/bin

User wvu may run the following commands on localhost:
    (ALL) ALL
    (ALL) NOPASSWD: ALL
    (root) /sbin/mount /mnt/cdrom, /sbin/umount /mnt/cdrom
    (root) /sbin/shutdown -h now

[*] Command: "ALL" RunAsUsers: ALL
[+] sudo any command!
[*] Command: "ALL" RunAsUsers: ALL without providing a password
[+] sudo any command!
[*] Command: "/sbin/mount /mnt/cdrom" RunAsUsers: root
[*] Command: "/sbin/umount /mnt/cdrom" RunAsUsers: root
[*] Command: "/sbin/shutdown -h now" RunAsUsers: root

Sudo Commands
=============

  Command                  RunAsUsers  RunAsGroups  Password?  Privesc?
  -------                  ----------  -----------  ---------  --------
  /sbin/mount /mnt/cdrom   root                     True
  /sbin/shutdown -h now    root                     True
  /sbin/umount /mnt/cdrom  root                     True
  ALL                      ALL                      True       True
  ALL                      ALL                                 True

[+] Output stored in: /Users/user/.msf4/loot/20180613134731_default_192.168.56.101_sudo.commands_305964.txt
[*] Post module execution completed
msf5 post(multi/recon/sudo_commands) > cat /Users/user/.msf4/loot/20180613134731_default_192.168.56.101_sudo.commands_305964.txt
[*] exec: cat /Users/user/.msf4/loot/20180613134731_default_192.168.56.101_sudo.commands_305964.txt

Command,RunAsUsers,RunAsGroups,Password?,Privesc?
"/sbin/mount /mnt/cdrom","root","","True",""
"/sbin/shutdown -h now","root","","True",""
"/sbin/umount /mnt/cdrom","root","","True",""
"ALL","ALL","","True","True"
"ALL","ALL","","","True"
msf5 post(multi/recon/sudo_commands) >