SNMP Enumeration Module - Metasploit
This page contains detailed information about how to use the auxiliary/scanner/snmp/snmp_enum metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: SNMP Enumeration Module
Module: auxiliary/scanner/snmp/snmp_enum
Source code: modules/auxiliary/scanner/snmp/snmp_enum.rb
Disclosure date: -
Last modification time: 2020-06-11 13:09:25 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: -
Target network port(s): 161
List of CVEs: -
This module allows enumeration of any devices with SNMP protocol support. It supports hardware, software, and network information. The default community used is "public".
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/snmp/snmp_enum
msf auxiliary(snmp_enum) > show options
... show and set options ...
msf auxiliary(snmp_enum) > set RHOSTS ip-range
msf auxiliary(snmp_enum) > exploit
Other examples of setting the RHOSTS option:
Example 1:
msf auxiliary(snmp_enum) > set RHOSTS 192.168.1.3-192.168.1.200
Example 2:
msf auxiliary(snmp_enum) > set RHOSTS 192.168.1.1/24
Example 3:
msf auxiliary(snmp_enum) > 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
This module performs a detailed enumeration of a host or a range through SNMP protocol. It supports hardware, software, and network information.
Verification Steps
- Do:
use auxiliary/scanner/snmp/snmp_enum
- Do:
set RHOSTS [IP]
- Do:
run
Scenarios
msf > use auxiliary/scanner/snmp/snmp_enum
msf auxiliary(auxiliary/scanner/snmp/snmp_enum) > set RHOSTS 1.1.1.2
RHOSTS => 1.1.1.2
msf auxiliary(auxiliary/scanner/snmp/snmp_enum) > run
[*] System information
Hostname : Netgear-GSM7224
Description : GSM7224 L2 Managed Gigabit Switch
Contact : dookie
Location : Basement
Uptime snmp : 56 days, 00:36:28.00
Uptime system : -
System date : -
[*] Network information
IP forwarding enabled : no
Default TTL : 64
TCP segments received : 20782
TCP segments sent : 9973
TCP segments retrans. : 9973
Input datagrams : 4052407
Delivered datagrams : 1155615
Output datagrams : 18261
[*] Network interfaces
Interface [ up ] Unit: 1 Slot: 0 Port: 1 Gigabit - Level
Id : 1
Mac address : 00:0f:b5:fc:bd:24
Type : ethernet-csmacd
Speed : 1000 Mbps
Mtu : 1500
In octets : 3716564861
Out octets : 675201778
...snip...
[*] Routing information
Destination Next hop Mask Metric
0.0.0.0 5.1.168.192 0.0.0.0 1
1.0.0.127 1.0.0.127 255.255.255.255 0
[*] TCP connections and listening ports
Local address Local port Remote address Remote port State
0.0.0.0 23 0.0.0.0 0 listen
0.0.0.0 80 0.0.0.0 0 listen
0.0.0.0 4242 0.0.0.0 0 listen
1.0.0.127 2222 0.0.0.0 0 listen
[*] Listening UDP ports
Local address Local port
0.0.0.0 0
0.0.0.0 161
0.0.0.0 514
[*] Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed
msf auxiliary(auxiliary/scanner/snmp/snmp_enum) >
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Msfconsole Usage
Here is how the scanner/snmp/snmp_enum auxiliary module looks in the msfconsole:
msf6 > use auxiliary/scanner/snmp/snmp_enum
msf6 auxiliary(scanner/snmp/snmp_enum) > show info
Name: SNMP Enumeration Module
Module: auxiliary/scanner/snmp/snmp_enum
License: Metasploit Framework License (BSD)
Rank: Normal
Provided by:
Matteo Cantoni <[email protected]>
Check supported:
No
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
COMMUNITY public yes SNMP Community String
RETRIES 1 yes SNMP Retries
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 161 yes The target port (UDP)
THREADS 1 yes The number of concurrent threads (max one per host)
TIMEOUT 1 yes SNMP Timeout
VERSION 1 yes SNMP Version <1/2c>
Description:
This module allows enumeration of any devices with SNMP protocol
support. It supports hardware, software, and network information.
The default community used is "public".
References:
http://en.wikipedia.org/wiki/Simple_Network_Management_Protocol
http://net-snmp.sourceforge.net/docs/man/snmpwalk.html
http://www.nothink.org/perl/snmpcheck/
Module Options
This is a complete list of options available in the scanner/snmp/snmp_enum auxiliary module:
msf6 auxiliary(scanner/snmp/snmp_enum) > show options
Module options (auxiliary/scanner/snmp/snmp_enum):
Name Current Setting Required Description
---- --------------- -------- -----------
COMMUNITY public yes SNMP Community String
RETRIES 1 yes SNMP Retries
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 161 yes The target port (UDP)
THREADS 1 yes The number of concurrent threads (max one per host)
TIMEOUT 1 yes SNMP Timeout
VERSION 1 yes SNMP Version <1/2c>
Advanced Options
Here is a complete list of advanced options supported by the scanner/snmp/snmp_enum auxiliary module:
msf6 auxiliary(scanner/snmp/snmp_enum) > show advanced
Module advanced options (auxiliary/scanner/snmp/snmp_enum):
Name Current Setting Required Description
---- --------------- -------- -----------
CHOST no The local client address
CPORT no The local client port
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/snmp/snmp_enum module can do:
msf6 auxiliary(scanner/snmp/snmp_enum) > show actions
Auxiliary actions:
Name Description
---- -----------
Evasion Options
Here is the full list of possible evasion options supported by the scanner/snmp/snmp_enum auxiliary module in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 auxiliary(scanner/snmp/snmp_enum) > 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.
NotFoundErrors
Here is a relevant code snippet related to the "NotFoundErrors" error message:
503: iis["BGIRequests"] = http_totalBGIRequests
504: end
505:
506: http_totalNotFoundErrors = snmp.get_value('1.3.6.1.4.1.311.1.7.3.1.22.0')
507: if http_totalNotFoundErrors.to_s !~ /Null/
508: iis["NotFoundErrors"] = http_totalNotFoundErrors
509: end
510:
511: if not iis.empty?
512: output_data["IIS server information"] = iis
513: end
<IP> SNMP request timeout.
Here is a relevant code snippet related to the "<IP> SNMP request timeout." error message:
856:
857: print_line(line)
858: print_line('')
859:
860: rescue SNMP::RequestTimeout
861: print_error("#{ip} SNMP request timeout.")
862: rescue Rex::ConnectionError
863: print_error("#{ip} Connection refused.")
864: rescue SNMP::InvalidIpAddress
865: print_error("#{ip} Invalid IP Address. Check it with 'snmpwalk tool'.")
866: rescue SNMP::UnsupportedVersion
<IP> Connection refused.
Here is a relevant code snippet related to the "<IP> Connection refused." error message:
858: print_line('')
859:
860: rescue SNMP::RequestTimeout
861: print_error("#{ip} SNMP request timeout.")
862: rescue Rex::ConnectionError
863: print_error("#{ip} Connection refused.")
864: rescue SNMP::InvalidIpAddress
865: print_error("#{ip} Invalid IP Address. Check it with 'snmpwalk tool'.")
866: rescue SNMP::UnsupportedVersion
867: print_error("#{ip} Unsupported SNMP version specified. Select from '1' or '2c'.")
868: rescue ::Interrupt
<IP> Invalid IP Address. Check it with 'snmpwalk tool'.
Here is a relevant code snippet related to the "<IP> Invalid IP Address. Check it with 'snmpwalk tool'." error message:
860: rescue SNMP::RequestTimeout
861: print_error("#{ip} SNMP request timeout.")
862: rescue Rex::ConnectionError
863: print_error("#{ip} Connection refused.")
864: rescue SNMP::InvalidIpAddress
865: print_error("#{ip} Invalid IP Address. Check it with 'snmpwalk tool'.")
866: rescue SNMP::UnsupportedVersion
867: print_error("#{ip} Unsupported SNMP version specified. Select from '1' or '2c'.")
868: rescue ::Interrupt
869: raise $!
870: rescue ::Exception => e
<IP> Unsupported SNMP version specified. Select from '1' or '2c'.
Here is a relevant code snippet related to the "<IP> Unsupported SNMP version specified. Select from '1' or '2c'." error message:
862: rescue Rex::ConnectionError
863: print_error("#{ip} Connection refused.")
864: rescue SNMP::InvalidIpAddress
865: print_error("#{ip} Invalid IP Address. Check it with 'snmpwalk tool'.")
866: rescue SNMP::UnsupportedVersion
867: print_error("#{ip} Unsupported SNMP version specified. Select from '1' or '2c'.")
868: rescue ::Interrupt
869: raise $!
870: rescue ::Exception => e
871: print_error("Unknown error: #{e.class} #{e}")
872: elog(e)
Unknown error: <E.CLASS> <E>
Here is a relevant code snippet related to the "Unknown error: <E.CLASS> <E>" error message:
866: rescue SNMP::UnsupportedVersion
867: print_error("#{ip} Unsupported SNMP version specified. Select from '1' or '2c'.")
868: rescue ::Interrupt
869: raise $!
870: rescue ::Exception => e
871: print_error("Unknown error: #{e.class} #{e}")
872: elog(e)
873: ensure
874: disconnect_snmp
875: end
876: end
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Related Pull Requests
- #13608 Merged Pull Request: Standardise Error Logging
- #12044 Merged Pull Request: Fix SNMP enumeration module network interface processing
- #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
- #5059 Merged Pull Request: Yard doc corrections
- #3399 Merged Pull Request: Rewire some snmp modules to use print_error instead of print_status.
- #3088 Merged Pull Request: Treat missing SNMP timestamp elements as 0 in auxiliary/scanner/snmp/snmp_enum
- #2525 Merged Pull Request: Change module boilerplate
- #1925 Merged Pull Request: Making changes recommended in redmine 7945
- #1228 Merged Pull Request: MSFTIDY cleanup #1 - auxiliary
- #1092 Merged Pull Request: Make error handling consistent in SNMP modules
References
- CVE: Not available
- http://en.wikipedia.org/wiki/Simple_Network_Management_Protocol
- http://net-snmp.sourceforge.net/docs/man/snmpwalk.html
- http://www.nothink.org/perl/snmpcheck/
See Also
Check also the following modules related to this module:
- auxiliary/admin/backupexec/registry
- auxiliary/gather/java_rmi_registry
- exploit/windows/local/ms13_097_ie_registry_symlink
- exploit/windows/local/registry_persistence
- auxiliary/scanner/snmp/snmp_enum_hp_laserjet
- auxiliary/scanner/snmp/snmp_enumshares
- auxiliary/scanner/snmp/snmp_enumusers
- auxiliary/scanner/snmp/snmp_login
- auxiliary/scanner/snmp/snmp_set
- auxiliary/scanner/snmp/aix_version
- auxiliary/scanner/snmp/arris_dg950
- auxiliary/scanner/snmp/brocade_enumhash
- auxiliary/scanner/snmp/cisco_config_tftp
- auxiliary/scanner/snmp/cisco_upload_file
- auxiliary/scanner/snmp/cnpilot_r_snmp_loot
- auxiliary/scanner/snmp/epmp1000_snmp_loot
- auxiliary/scanner/snmp/netopia_enum
- auxiliary/scanner/snmp/sbg6580_enum
- auxiliary/scanner/snmp/ubee_ddw3611
- auxiliary/scanner/snmp/xerox_workcentre_enumusers
- exploit/linux/snmp/awind_snmp_exec
- exploit/linux/snmp/net_snmpd_rw_access
- exploit/linux/http/nagios_xi_snmptrap_authenticated_rce
- exploit/windows/http/hp_nnm_ovwebsnmpsrv_main
- exploit/windows/http/hp_nnm_ovwebsnmpsrv_ovutil
- exploit/windows/http/hp_nnm_ovwebsnmpsrv_uro
- exploit/windows/http/hp_nnm_snmp
- exploit/windows/http/hp_nnm_snmpviewer_actapp
- post/windows/gather/enum_snmp
Authors
Matteo Cantoni <goony[at]nothink.org>
Version
This page has been produced using Metasploit Framework version 6.1.27-dev. For more modules, visit the Metasploit Module Library.
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