Redis Command Execute Scanner - Metasploit


This page contains detailed information about how to use the auxiliary/scanner/redis/redis_server metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.

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Module Overview

Name: Redis Command Execute Scanner
Module: auxiliary/scanner/redis/redis_server
Source code: modules/auxiliary/scanner/redis/redis_server.rb
Disclosure date: -
Last modification time: 2017-07-24 06:26:21 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: -
Target network port(s): 6379
List of CVEs: -

This module locates Redis endpoints by attempting to run a specified Redis command.

Module Ranking and Traits

Module Ranking:

  • normal: The exploit is otherwise reliable, but depends on a specific version and can't (or doesn't) reliably autodetect. More information about ranking can be found here.

Basic Usage

This module is a scanner module, and is capable of testing against multiple hosts.

msf > use auxiliary/scanner/redis/redis_server
msf auxiliary(redis_server) > show options
    ... show and set options ...
msf auxiliary(redis_server) > set RHOSTS ip-range
msf auxiliary(redis_server) > exploit

Other examples of setting the RHOSTS option:

Example 1:

msf auxiliary(redis_server) > set RHOSTS 192.168.1.3-192.168.1.200

Example 2:

msf auxiliary(redis_server) > set RHOSTS 192.168.1.1/24

Example 3:

msf auxiliary(redis_server) > set RHOSTS file:/tmp/ip_list.txt

Required Options

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

Knowledge Base

Description

Redis is an in-memory data structure project implementing a distributed, in-memory key-value database with optional durability. Redis supports different kinds of abstract data structures, such as strings, lists, maps, sets, sorted sets, HyperLogLogs, bitmaps, streams, and spatial indexes.

This module locates Redis endpoints by attempting to run a specified Redis command.

Vulnerable Application

This module is tested on two different Redis server instances. Virtual testing environments (inside docker container):

  • Redis 5.0.6
  • Redis 4.0.14

Verification Steps

  1. Do: use auxiliary/scanner/redis/redis_server
  2. Do: set rhosts [ips]
  3. Do: run

Options

COMMAND

Requires a valid redis command to be executed on rhosts. Defaults to INFO. Redis commands list can be found here.

Scenarios

Redis: 4.0.14 inside a docker container

msf5 auxiliary(scanner/redis/redis_server) > use auxiliary/scanner/redis/redis_server
msf5 auxiliary(scanner/redis/redis_server) > set RHOSTS 172.17.0.3
RHOSTS => 172.17.0.3
msf5 auxiliary(scanner/redis/redis_server) > run

[+] 172.17.0.3:6379       - Found redis with INFO command: $2701\x0d\x0a# Server\x0d\x0aredis_version:4.0.14\x0d\x0aredis_git_sha1:00000000\x0d\x0aredis_git_dirty:0\x0d\x0aredis_build_id:30850c2ae048947f\x0d\x0aredis_mode:standalone\x0d\x0aos:Linux 4.19.69-1-MANJARO x86_64\x0d\x0aarch_bits:64\x0d\x0amultiplexing_api:epoll\x0d\x0aatomicvar_api:atomic-builtin\x0d\x0agcc_version:8.3.0\x0d\x0aprocess_id:1\x0d\x0arun_id:de1d3d4547ce93ecad76de2efdbcf7ae2d456613\x0d\x0atcp_port:6379\x0d\x0auptime_in_seconds:564\x0d\x0auptime_in_days:0\x0d\x0ahz:10\x0d\x0alru_clock:10154159\x0d\x0aexecutable:/data/redis-server\x0d\x0aconfig_file:\x0d\x0a\x0d\x0a# Clients\x0d\x0aconnected_clients:1\x0d\x0aclient_longest_output_list:0\x0d\x0aclient_biggest_input_buf:0\x0d\x0ablocked_clients:0\x0d\x0a\x0d\x0a# Memory\x0d\x0aused_memory:849224\x0d\x0aused_memory_human:829.32K\x0d\x0aused_memory_rss:4464640\x0d\x0aused_memory_rss_human:4.26M\x0d\x0aused_memory_peak:849224\x0d\x0aused_memory_peak_human:829.32K\x0d\x0aused_memory_peak_perc:100.00%\x0d\x0aused_memory_overhead:836126\x0d\x0aused_memory_startup:786488\x0d\x0aused_memory_dataset:13098\x0d\x0aused_memory_dataset_perc:20.88%\x0d\x0atotal_system_memory:12010311680\x0d\x0atotal_system_memory_human:11.19G\x0d\x0aused_memory_lua:37888\x0d\x0aused_memory_lua_human:37.00K\x0d\x0amaxmemory:0\x0d\x0amaxmemory_human:0B\x0d\x0amaxmemory_policy:noeviction\x0d\x0amem_fragmentation_ratio:5.26\x0d\x0amem_allocator:jemalloc-4.0.3\x0d\x0aactive_defrag_running:0\x0d\x0alazyfree_pending_objects:0\x0d\x0a\x0d\x0a# Persistence\x0d\x0aloading:0\x0d\x0ardb_changes_since_last_save:0\x0d\x0ardb_bgsave_in_progress:0\x0d\x0ardb_last_save_time:1570434683\x0d\x0ardb_last_bgsave_status:ok\x0d\x0ardb_last_bgsave_time_sec:-1\x0d\x0ardb_current_bgsave_time_sec:-1\x0d\x0ardb_last_cow_size:0\x0d\x0aaof_enabled:0\x0d\x0aaof_rewrite_in_progress:0\x0d\x0aaof_rewrite_scheduled:0\x0d\x0aaof_last_rewrite_time_sec:-1\x0d\x0aaof_current_rewrite_time_sec:-1\x0d\x0aaof_last_bgrewrite_status:ok\x0d\x0aaof_last_write_status:ok\x0d\x0aaof_last_cow_size:0\x0d\x0a\x0d\x0a# Stats\x0d\x0atotal_connections_received:5\x0d\x0atotal_commands_processed:3\x0d\x0ainstantaneous_ops_per_sec:0\x0d\x0atotal_net_input_bytes:79\x0d\x0atotal_net_output_bytes:8191\x0d\x0ainstantaneous_input_kbps:0.00\x0d\x0ainstantaneous_output_kbps:0.00\x0d\x0arejected_connections:0\x0d\x0async_full:0\x0d\x0async_partial_ok:0\x0d\x0async_partial_err:0\x0d\x0aexpired_keys:0\x0d\x0aexpired_stale_perc:0.00\x0d\x0aexpired_time_cap_reached_count:0\x0d\x0aevicted_keys:0\x0d\x0akeyspace_hits:0\x0d\x0akeyspace_misses:0\x0d\x0apubsub_channels:0\x0d\x0apubsub_patterns:0\x0d\x0alatest_fork_usec:0\x0d\x0amigrate_cached_sockets:0\x0d\x0aslave_expires_tracked_keys:0\x0d\x0aactive_defrag_hits:0\x0d\x0aactive_defrag_misses:0\x0d\x0aactive_defrag_key_hits:0\x0d\x0aactive_defrag_key_misses:0\x0d\x0a\x0d\x0a# Replication\x0d\x0arole:master\x0d\x0aconnected_slaves:0\x0d\x0amaster_replid:0d4b69672220406a209cf68d63e22215f5bc8741\x0d\x0amaster_replid2:0000000000000000000000000000000000000000\x0d\x0amaster_repl_offset:0\x0d\x0asecond_repl_offset:-1\x0d\x0arepl_backlog_active:0\x0d\x0arepl_backlog_size:1048576\x0d\x0arepl_backlog_first_byte_offset:0\x0d\x0arepl_backlog_histlen:0\x0d\x0a\x0d\x0a# CPU\x0d\x0aused_cpu_sys:0.66\x0d\x0aused_cpu_user:0.45\x0d\x0aused_cpu_sys_children:0.00\x0d\x0aused_cpu_user_children:0.00\x0d\x0a\x0d\x0a# Cluster\x0d\x0acluster_enabled:0\x0d\x0a\x0d\x0a# Keyspace
[*] 172.17.0.3:6379       - Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed

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Msfconsole Usage

Here is how the scanner/redis/redis_server auxiliary module looks in the msfconsole:

msf6 > use auxiliary/scanner/redis/redis_server

msf6 auxiliary(scanner/redis/redis_server) > show info

       Name: Redis Command Execute Scanner
     Module: auxiliary/scanner/redis/redis_server
    License: Metasploit Framework License (BSD)
       Rank: Normal

Provided by:
  iallison <[email protected]>
  Nixawk

Check supported:
  No

Basic options:
  Name      Current Setting  Required  Description
  ----      ---------------  --------  -----------
  COMMAND   INFO             yes       The Redis command to run
  PASSWORD  foobared         no        Redis password for authentication test
  RHOSTS                     yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
  RPORT     6379             yes       The target port (TCP)
  THREADS   1                yes       The number of concurrent threads (max one per host)

Description:
  This module locates Redis endpoints by attempting to run a specified 
  Redis command.

Module Options

This is a complete list of options available in the scanner/redis/redis_server auxiliary module:

msf6 auxiliary(scanner/redis/redis_server) > show options

Module options (auxiliary/scanner/redis/redis_server):

   Name      Current Setting  Required  Description
   ----      ---------------  --------  -----------
   COMMAND   INFO             yes       The Redis command to run
   PASSWORD  foobared         no        Redis password for authentication test
   RHOSTS                     yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
   RPORT     6379             yes       The target port (TCP)
   THREADS   1                yes       The number of concurrent threads (max one per host)

Advanced Options

Here is a complete list of advanced options supported by the scanner/redis/redis_server auxiliary module:

msf6 auxiliary(scanner/redis/redis_server) > show advanced

Module advanced options (auxiliary/scanner/redis/redis_server):

   Name                 Current Setting  Required  Description
   ----                 ---------------  --------  -----------
   CHOST                                 no        The local client address
   CPORT                                 no        The local client port
   ConnectTimeout       10               yes       Maximum number of seconds to establish a TCP connection
   Proxies                               no        A proxy chain of format type:host:port[,type:host:port][...]
   READ_TIMEOUT         2                yes       Seconds to wait while reading redis responses
   SSL                  false            no        Negotiate SSL/TLS for outgoing connections
   SSLCipher                             no        String for SSL cipher - "DHE-RSA-AES256-SHA" or "ADH"
   SSLVerifyMode        PEER             no        SSL verification method (Accepted: CLIENT_ONCE, FAIL_IF_NO_PEER_CERT, NONE, PEER)
   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)
   ShowProgress         true             yes       Display progress messages during a scan
   ShowProgressPercent  10               yes       The interval in percent that progress should be shown
   VERBOSE              false            no        Enable detailed status messages
   WORKSPACE                             no        Specify the workspace for this module

Auxiliary Actions

This is a list of all auxiliary actions that the scanner/redis/redis_server module can do:

msf6 auxiliary(scanner/redis/redis_server) > show actions

Auxiliary actions:

   Name  Description
   ----  -----------

Evasion Options

Here is the full list of possible evasion options supported by the scanner/redis/redis_server auxiliary module in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):

msf6 auxiliary(scanner/redis/redis_server) > show evasion

Module evasion options:

   Name                Current Setting  Required  Description
   ----                ---------------  --------  -----------
   TCP::max_send_size  0                no        Maxiumum tcp segment size.  (0 = disable)
   TCP::send_delay     0                no        Delays inserted before every send.  (0 = disable)

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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.

Error while communicating: <E>

Here is a relevant code snippet related to the "Error while communicating: <E>" error message:

37:	      return unless (data = redis_command(command))
38:	      report_service(host: rhost, port: rport, name: "redis server", info: "#{command} response: #{data}")
39:	      print_good("Found redis with #{command} command: #{Rex::Text.to_hex_ascii(data)}")
40:	    rescue Rex::AddressInUse, Rex::HostUnreachable, Rex::ConnectionTimeout,
41:	           Rex::ConnectionRefused, ::Timeout::Error, ::EOFError, ::Errno::ETIMEDOUT => e
42:	      vprint_error("Error while communicating: #{e}")
43:	    ensure
44:	      disconnect
45:	    end
46:	  end
47:	end

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See Also

Check also the following modules related to this module:

Authors

  • iallison <ian[at]team-allison.com>
  • Nixawk

Version

This page has been produced using Metasploit Framework version 6.2.23-dev. For more modules, visit the Metasploit Module Library.

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