Microsoft SQL Server Escalate Db_Owner - Metasploit
This page contains detailed information about how to use the auxiliary/admin/mssql/mssql_escalate_dbowner metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: Microsoft SQL Server Escalate Db_Owner
Module: auxiliary/admin/mssql/mssql_escalate_dbowner
Source code: modules/auxiliary/admin/mssql/mssql_escalate_dbowner.rb
Disclosure date: -
Last modification time: 2020-09-22 02:56:51 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: ms-sql2000, ms-sql-s, sybase
Target network port(s): 1433, 1434, 1435, 2533, 2638, 9152, 14330
List of CVEs: -
This module can be used to escalate privileges to sysadmin if the user has the db_owner role in a trustworthy database owned by a sysadmin user. Once the user has the sysadmin role the msssql_payload module can be used to obtain a shell on the system.
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
msf > use auxiliary/admin/mssql/mssql_escalate_dbowner
msf auxiliary(mssql_escalate_dbowner) > show targets
... a list of targets ...
msf auxiliary(mssql_escalate_dbowner) > set TARGET target-id
msf auxiliary(mssql_escalate_dbowner) > show options
... show and set options ...
msf auxiliary(mssql_escalate_dbowner) > exploit
Required Options
- RHOSTS: The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
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Msfconsole Usage
Here is how the admin/mssql/mssql_escalate_dbowner auxiliary module looks in the msfconsole:
msf6 > use auxiliary/admin/mssql/mssql_escalate_dbowner
msf6 auxiliary(admin/mssql/mssql_escalate_dbowner) > show info
Name: Microsoft SQL Server Escalate Db_Owner
Module: auxiliary/admin/mssql/mssql_escalate_dbowner
License: Metasploit Framework License (BSD)
Rank: Normal
Provided by:
nullbind <[email protected]>
Check supported:
No
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
PASSWORD no The password for the specified username
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 1433 yes The target port (TCP)
TDSENCRYPTION false yes Use TLS/SSL for TDS data "Force Encryption"
USERNAME sa no The username to authenticate as
USE_WINDOWS_AUTHENT false yes Use windows authentification (requires DOMAIN option set)
Description:
This module can be used to escalate privileges to sysadmin if the
user has the db_owner role in a trustworthy database owned by a
sysadmin user. Once the user has the sysadmin role the
msssql_payload module can be used to obtain a shell on the system.
References:
http://technet.microsoft.com/en-us/library/ms188676(v=sql.105).aspx
Module Options
This is a complete list of options available in the admin/mssql/mssql_escalate_dbowner auxiliary module:
msf6 auxiliary(admin/mssql/mssql_escalate_dbowner) > show options
Module options (auxiliary/admin/mssql/mssql_escalate_dbowner):
Name Current Setting Required Description
---- --------------- -------- -----------
PASSWORD no The password for the specified username
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 1433 yes The target port (TCP)
TDSENCRYPTION false yes Use TLS/SSL for TDS data "Force Encryption"
USERNAME sa no The username to authenticate as
USE_WINDOWS_AUTHENT false yes Use windows authentification (requires DOMAIN option set)
Advanced Options
Here is a complete list of advanced options supported by the admin/mssql/mssql_escalate_dbowner auxiliary module:
msf6 auxiliary(admin/mssql/mssql_escalate_dbowner) > show advanced
Module advanced options (auxiliary/admin/mssql/mssql_escalate_dbowner):
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
DOMAIN WORKSTATION yes The domain to use for windows authentication
HEX2BINARY /opt/metasploit-framework/embedded/framework/data/exploits/mssql/h2b no The path to the hex2binary script on the disk
NTLM::SendLM true yes Always send the LANMAN response (except when NTLMv2_session is specified)
NTLM::SendNTLM true yes Activate the 'Negotiate NTLM key' flag, indicating the use of NTLM responses
NTLM::SendSPN true yes Send an avp of type SPN in the ntlmv2 client blob, this allows authentication on Windows 7+/Server 2008 R2+ when SPN is required
NTLM::UseLMKey false yes Activate the 'Negotiate Lan Manager Key' flag, using the LM key when the LM response is sent
NTLM::UseNTLM2_session true yes Activate the 'Negotiate NTLM2 key' flag, forcing the use of a NTLMv2_session
NTLM::UseNTLMv2 true yes Use NTLMv2 instead of NTLM2_session when 'Negotiate NTLM2' key is true
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
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)
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 admin/mssql/mssql_escalate_dbowner module can do:
msf6 auxiliary(admin/mssql/mssql_escalate_dbowner) > show actions
Auxiliary actions:
Name Description
---- -----------
Evasion Options
Here is the full list of possible evasion options supported by the admin/mssql/mssql_escalate_dbowner auxiliary module in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 auxiliary(admin/mssql/mssql_escalate_dbowner) > 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.
Login was unsuccessful. Check your credentials.
Here is a relevant code snippet related to the "Login was unsuccessful. Check your credentials." error message:
26: # Check connection and issue initial query
27: print_status("Attempting to connect to the database server at #{rhost}:#{rport} as #{datastore['USERNAME']}...")
28: if mssql_login_datastore
29: print_good('Connected.')
30: else
31: print_error('Login was unsuccessful. Check your credentials.')
32: disconnect
33: return
34: end
35:
36: # Query for sysadmin status
You're NOT a sysadmin, let's try to change that
Here is a relevant code snippet related to the "You're NOT a sysadmin, let's try to change that" error message:
41: if user_status == 1
42: print_good("#{datastore['USERNAME']} has the sysadmin role, no escalation required.")
43: disconnect
44: return
45: else
46: print_status("You're NOT a sysadmin, let's try to change that")
47: end
48:
49: # Check for trusted databases owned by sysadmins
50: print_status("Checking for trusted databases owned by sysadmins...")
51: trust_db_list = check_trust_dbs
No databases owned by sysadmin were found flagged as trustworthy.
Here is a relevant code snippet related to the "No databases owned by sysadmin were found flagged as trustworthy." error message:
48:
49: # Check for trusted databases owned by sysadmins
50: print_status("Checking for trusted databases owned by sysadmins...")
51: trust_db_list = check_trust_dbs
52: if trust_db_list.nil? || trust_db_list.length == 0
53: print_error('No databases owned by sysadmin were found flagged as trustworthy.')
54: disconnect
55: return
56: else
57: # Display list of accessible databases to user
58: print_good("#{trust_db_list.length} affected database(s) were found:")
Fail buckets, the user doesn't have db_owner role anywhere.
Here is a relevant code snippet related to the "Fail buckets, the user doesn't have db_owner role anywhere." error message:
63:
64: # Check if the user has the db_owner role in any of the databases
65: print_status('Checking if the user has the db_owner role in any of them...')
66: dbowner_status = check_db_owner(trust_db_list)
67: if dbowner_status.nil?
68: print_error("Fail buckets, the user doesn't have db_owner role anywhere.")
69: disconnect
70: return
71: end
72:
73: # Attempt to escalate to sysadmin
Fail buckets, something went wrong.
Here is a relevant code snippet related to the "Fail buckets, something went wrong." error message:
77: # Check if escalation was successful
78: user_status = check_sysadmin
79: if user_status == 1
80: print_good("Congrats, #{datastore['USERNAME']} is now a sysadmin!.")
81: else
82: print_error("Fail buckets, something went wrong.")
83: end
84: else
85: print_error("Error while trying to escalate status")
86: end
87:
Error while trying to escalate status
Here is a relevant code snippet related to the "Error while trying to escalate status" error message:
80: print_good("Congrats, #{datastore['USERNAME']} is now a sysadmin!.")
81: else
82: print_error("Fail buckets, something went wrong.")
83: end
84: else
85: print_error("Error while trying to escalate status")
86: end
87:
88: disconnect
89: return
90: end
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Related Pull Requests
- #14202 Merged Pull Request: Implement the zeitwerk autoloader within lib/msf/core
- #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
- #4325 Merged Pull Request: Minor title change for mssql_enum_domain_accounts_sqli
- #3894 Merged Pull Request: Added mssql_escalate_dbowner module
References
See Also
Check also the following modules related to this module:
- auxiliary/admin/mssql/mssql_enum
- auxiliary/admin/mssql/mssql_enum_domain_accounts
- auxiliary/admin/mssql/mssql_enum_domain_accounts_sqli
- auxiliary/admin/mssql/mssql_enum_sql_logins
- auxiliary/admin/mssql/mssql_escalate_dbowner_sqli
- auxiliary/admin/mssql/mssql_escalate_execute_as
- auxiliary/admin/mssql/mssql_escalate_execute_as_sqli
- auxiliary/admin/mssql/mssql_exec
- auxiliary/admin/mssql/mssql_findandsampledata
- auxiliary/admin/mssql/mssql_idf
- auxiliary/admin/mssql/mssql_ntlm_stealer
- auxiliary/admin/mssql/mssql_ntlm_stealer_sqli
- auxiliary/admin/mssql/mssql_sql
- auxiliary/admin/mssql/mssql_sql_file
- auxiliary/scanner/mssql/mssql_hashdump
- auxiliary/scanner/mssql/mssql_login
- auxiliary/scanner/mssql/mssql_ping
- auxiliary/scanner/mssql/mssql_schemadump
- exploit/windows/mssql/mssql_clr_payload
- exploit/windows/mssql/mssql_linkcrawler
- exploit/windows/mssql/mssql_payload
- exploit/windows/mssql/mssql_payload_sqli
- post/windows/gather/credentials/mssql_local_hashdump
- post/windows/manage/mssql_local_auth_bypass
- exploit/windows/mssql/lyris_listmanager_weak_pass
- exploit/windows/mssql/ms02_039_slammer
- exploit/windows/mssql/ms02_056_hello
- exploit/windows/mssql/ms09_004_sp_replwritetovarbin
- exploit/windows/mssql/ms09_004_sp_replwritetovarbin_sqli
- auxiliary/server/capture/mssql
Authors
- nullbind <scott.sutherland[at]netspi.com>
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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