DB2 Authentication Brute Force Utility - Metasploit
This page contains detailed information about how to use the auxiliary/scanner/db2/db2_auth metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Table Of Contents
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Module Overview
Name: DB2 Authentication Brute Force Utility
Module: auxiliary/scanner/db2/db2_auth
Source code: modules/auxiliary/scanner/db2/db2_auth.rb
Disclosure date: -
Last modification time: 2021-08-31 17:10:07 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: -
Target network port(s): 50000
List of CVEs: CVE-1999-0502
This module attempts to authenticate against a DB2 instance using username and password combinations indicated by the USER_FILE, PASS_FILE, and USERPASS_FILE options.
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/db2/db2_auth
msf auxiliary(db2_auth) > show options
... show and set options ...
msf auxiliary(db2_auth) > set RHOSTS ip-range
msf auxiliary(db2_auth) > exploit
Other examples of setting the RHOSTS option:
Example 1:
msf auxiliary(db2_auth) > set RHOSTS 192.168.1.3-192.168.1.200
Example 2:
msf auxiliary(db2_auth) > set RHOSTS 192.168.1.1/24
Example 3:
msf auxiliary(db2_auth) > 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
Vulnerable Application
This module attempts to authenticate against a DB2 instance using username and password combinations indicated by the USER_FILE, PASS_FILE, and USERPASS_FILE options.
More information can be found on the Rapid7 Vulnerability & Exploit Database page
Verification Steps
- Start msfconsole
- Do:
use auxiliary/scanner/db2/db2_auth - Do:
set RHOSTS [ip] - Do:
run
Scenarios
A run on Kali Linux 2019.3 and DB2 11.5.0.0a
msf > use auxiliary/scanner/db2/db2_auth
msf auxiliary/scanner/db2/db2_auth) > show options
msf auxiliary/scanner/db2/db2_auth) > set USERNAME db2inst1
msf auxiliary/scanner/db2/db2_auth) > set PASSWORD db2pass
msf auxiliary(scanner/db2/db2_auth) > set DATABASE testdb
msf auxiliary/scanner/db2/db2_auth) > set RHOST 172.17.0.2
msf auxiliary/scanner/db2/db2_auth) > run
[-] 172.17.0.2:50000 - 172.17.0.2:50000 - LOGIN FAILED: db2inst1:db2inst1@testdb (Incorrect: )
[-] 172.17.0.2:50000 - 172.17.0.2:50000 - LOGIN FAILED: db2inst1:dasusr1@testdb (Incorrect: )
[-] 172.17.0.2:50000 - 172.17.0.2:50000 - LOGIN FAILED: db2inst1:db2fenc1@testdb (Incorrect: )
[*] 172.17.0.2:50000 - Login Successful: db2inst1:db2pass
[*] 172.17.0.2:50000 - Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed
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Msfconsole Usage
Here is how the scanner/db2/db2_auth auxiliary module looks in the msfconsole:
msf6 > use auxiliary/scanner/db2/db2_auth
msf6 auxiliary(scanner/db2/db2_auth) > show info
Name: DB2 Authentication Brute Force Utility
Module: auxiliary/scanner/db2/db2_auth
License: Metasploit Framework License (BSD)
Rank: Normal
Provided by:
todb <[email protected]>
Check supported:
No
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
BLANK_PASSWORDS false no Try blank passwords for all users
BRUTEFORCE_SPEED 5 yes How fast to bruteforce, from 0 to 5
DATABASE toolsdb yes The name of the target database
DB_ALL_CREDS false no Try each user/password couple stored in the current database
DB_ALL_PASS false no Add all passwords in the current database to the list
DB_ALL_USERS false no Add all users in the current database to the list
PASSWORD no A specific password to authenticate with
PASS_FILE /opt/metasploit-framework/embedded/framework/data/wordlists/db2_default_pass.txt no File containing passwords, one per line
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 50000 yes The target port (TCP)
STOP_ON_SUCCESS false yes Stop guessing when a credential works for a host
THREADS 1 yes The number of concurrent threads (max one per host)
USERNAME no A specific username to authenticate as
USERPASS_FILE /opt/metasploit-framework/embedded/framework/data/wordlists/db2_default_userpass.txt no File containing (space-separated) users and passwords, one pair per line
USER_AS_PASS false no Try the username as the password for all users
USER_FILE /opt/metasploit-framework/embedded/framework/data/wordlists/db2_default_user.txt no File containing users, one per line
VERBOSE true yes Whether to print output for all attempts
Description:
This module attempts to authenticate against a DB2 instance using
username and password combinations indicated by the USER_FILE,
PASS_FILE, and USERPASS_FILE options.
References:
https://nvd.nist.gov/vuln/detail/CVE-1999-0502
Module Options
This is a complete list of options available in the scanner/db2/db2_auth auxiliary module:
msf6 auxiliary(scanner/db2/db2_auth) > show options
Module options (auxiliary/scanner/db2/db2_auth):
Name Current Setting Required Description
---- --------------- -------- -----------
BLANK_PASSWORDS false no Try blank passwords for all users
BRUTEFORCE_SPEED 5 yes How fast to bruteforce, from 0 to 5
DATABASE toolsdb yes The name of the target database
DB_ALL_CREDS false no Try each user/password couple stored in the current database
DB_ALL_PASS false no Add all passwords in the current database to the list
DB_ALL_USERS false no Add all users in the current database to the list
PASSWORD no A specific password to authenticate with
PASS_FILE /opt/metasploit-framework/embedded/framework/data/wordlists/db2_default_pass.txt no File containing passwords, one per line
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 50000 yes The target port (TCP)
STOP_ON_SUCCESS false yes Stop guessing when a credential works for a host
THREADS 1 yes The number of concurrent threads (max one per host)
USERNAME no A specific username to authenticate as
USERPASS_FILE /opt/metasploit-framework/embedded/framework/data/wordlists/db2_default_userpass.txt no File containing (space-separated) users and passwords, one pair per line
USER_AS_PASS false no Try the username as the password for all users
USER_FILE /opt/metasploit-framework/embedded/framework/data/wordlists/db2_default_user.txt no File containing users, one per line
VERBOSE true yes Whether to print output for all attempts
Advanced Options
Here is a complete list of advanced options supported by the scanner/db2/db2_auth auxiliary module:
msf6 auxiliary(scanner/db2/db2_auth) > show advanced
Module advanced options (auxiliary/scanner/db2/db2_auth):
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
MaxGuessesPerService 0 no Maximum number of credentials to try per service instance. If set to zero or a non-number, this option will not be used.
MaxGuessesPerUser 0 no Maximum guesses for a particular username for the service instance. Note that users are considered unique among different services, so a user at 10.1.1.1:22 is different from one at 10.2.2.2:
22, and both will be tried up to the MaxGuessesPerUser limit. If set to zero or a non-number, this option will not be used.
MaxMinutesPerService 0 no Maximum time in minutes to bruteforce the service instance. If set to zero or a non-number, this option will not be used.
REMOVE_PASS_FILE false yes Automatically delete the PASS_FILE on module completion
REMOVE_USERPASS_FILE false yes Automatically delete the USERPASS_FILE on module completion
REMOVE_USER_FILE false yes Automatically delete the USER_FILE on module completion
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
TRANSITION_DELAY 0 no Amount of time (in minutes) to delay before transitioning to the next user in the array (or password when PASSWORD_SPRAY=true)
WORKSPACE no Specify the workspace for this module
Auxiliary Actions
This is a list of all auxiliary actions that the scanner/db2/db2_auth module can do:
msf6 auxiliary(scanner/db2/db2_auth) > show actions
Auxiliary actions:
Name Description
---- -----------
Evasion Options
Here is the full list of possible evasion options supported by the scanner/db2/db2_auth auxiliary module in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 auxiliary(scanner/db2/db2_auth) > 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:
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.
<IP>:<RPORT> - LOGIN FAILED: <RESULT.CREDENTIAL> (<RESULT.STATUS>: <RESULT.PROOF>)
Here is a relevant code snippet related to the "<IP>:<RPORT> - LOGIN FAILED: <RESULT.CREDENTIAL> (<RESULT.STATUS>: <RESULT.PROOF>)" error message:
78: credential_data[:core] = credential_core
79: create_credential_login(credential_data)
80:
81: print_good "#{ip}:#{rport} - Login Successful: #{result.credential}"
82: else
83: invalidate_login(credential_data)
84: vprint_error "#{ip}:#{rport} - LOGIN FAILED: #{result.credential} (#{result.status}: #{result.proof})"
85: end
86: end
87: end
88: end
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Related Pull Requests
- #12394 Merged Pull Request: Corrected spelling in db2_auth.rb
- #12022 Merged Pull Request: Deregister PASSWORD_SPRAY option for LoginScanner modules
- #8716 Merged Pull Request: Print_Status -> Print_Good (And OCD bits 'n bobs)
- #8338 Merged Pull Request: Fix msf/core and self.class msftidy warnings
- #6655 Merged Pull Request: use MetasploitModule as a class name
- #6648 Merged Pull Request: Change metasploit class names
- #6014 Merged Pull Request: Related to #4803, Update LoginScanner modules to have into account TCP advanced options
- #4737 Merged Pull Request: Preserve Context in LoginScanner socket calls, fixes #4723
- #4364 Merged Pull Request: Modules should respect bruteforce_speed again
- #4057 Merged Pull Request: Re-eneable tcp evasions in some LoginScanners
- #3999 Merged Pull Request: Fix #3995 - Make negative messages less verbose for LoginScanner modules
- #3746 Merged Pull Request: Feature/msp 11162/db all creds
- #2525 Merged Pull Request: Change module boilerplate
- #2426 Merged Pull Request: Find and replace Msf::Config.install_root, "data"
- #1228 Merged Pull Request: MSFTIDY cleanup #1 - auxiliary
References
See Also
Check also the following modules related to this module:
- auxiliary/scanner/telnet/brocade_enable_login
- auxiliary/scanner/http/dell_idrac
- auxiliary/scanner/http/dlink_dir_300_615_http_login
- auxiliary/scanner/http/dlink_dir_615h_http_login
- auxiliary/scanner/http/dlink_dir_session_cgi_http_login
- auxiliary/scanner/ftp/ftp_login
- auxiliary/scanner/http/http_login
- auxiliary/scanner/http/joomla_bruteforce_login
- auxiliary/scanner/mysql/mysql_login
- auxiliary/scanner/nntp/nntp_login
- auxiliary/scanner/oracle/oracle_login
- auxiliary/scanner/pcanywhere/pcanywhere_login
- auxiliary/scanner/postgres/postgres_login
- auxiliary/scanner/rservices/rexec_login
- auxiliary/scanner/rservices/rlogin_login
- auxiliary/scanner/rservices/rsh_login
- exploit/multi/ssh/sshexec
- auxiliary/scanner/ssh/ssh_login
- auxiliary/scanner/telnet/telnet_login
- auxiliary/scanner/http/tomcat_mgr_login
- auxiliary/scanner/vmware/vmauthd_login
- auxiliary/scanner/vmware/vmware_http_login
- auxiliary/scanner/winrm/winrm_login
- auxiliary/scanner/http/wordpress_xmlrpc_login
- auxiliary/scanner/db2/db2_version
- auxiliary/scanner/db2/discovery
- auxiliary/admin/db2/db2rcmd
- auxiliary/scanner/vnc/vnc_none_auth
Related Nessus plugins:
- MPEi/X Default FTP Accounts
- Netscape Enterprise Default Administrative Password
- Unpassworded 'guest' Account
- Unpassworded 'EZsetup' Account
- Unpassworded 'demos' Account
- Unpassworded '4Dgifts' Account
- Unpassworded 'OutOfBox' Account
- Unpassworded 'root' Account
- Unpassworded 'lp' Account
- Unpassworded 'sync' Account
Authors
- todb
Version
This page has been produced using Metasploit Framework version 6.1.29-dev. For more modules, visit the Metasploit Module Library.
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