SSH Version Corruption - Metasploit
This page contains detailed information about how to use the auxiliary/fuzzers/ssh/ssh_version_corrupt metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: SSH Version Corruption
Module: auxiliary/fuzzers/ssh/ssh_version_corrupt
Source code: modules/auxiliary/fuzzers/ssh/ssh_version_corrupt.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): 22
List of CVEs: -
This module sends a series of SSH requests with a corrupted version string
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/fuzzers/ssh/ssh_version_corrupt
msf auxiliary(ssh_version_corrupt) > show targets
... a list of targets ...
msf auxiliary(ssh_version_corrupt) > set TARGET target-id
msf auxiliary(ssh_version_corrupt) > show options
... show and set options ...
msf auxiliary(ssh_version_corrupt) > 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 fuzzers/ssh/ssh_version_corrupt auxiliary module looks in the msfconsole:
msf6 > use auxiliary/fuzzers/ssh/ssh_version_corrupt
msf6 auxiliary(fuzzers/ssh/ssh_version_corrupt) > show info
Name: SSH Version Corruption
Module: auxiliary/fuzzers/ssh/ssh_version_corrupt
License: Metasploit Framework License (BSD)
Rank: Normal
Provided by:
hdm <[email protected]>
Check supported:
No
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
MAXDEPTH no Specify a maximum byte depth to test
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 22 yes The target port (TCP)
Description:
This module sends a series of SSH requests with a corrupted version
string
Module Options
This is a complete list of options available in the fuzzers/ssh/ssh_version_corrupt auxiliary module:
msf6 auxiliary(fuzzers/ssh/ssh_version_corrupt) > show options
Module options (auxiliary/fuzzers/ssh/ssh_version_corrupt):
Name Current Setting Required Description
---- --------------- -------- -----------
MAXDEPTH no Specify a maximum byte depth to test
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 22 yes The target port (TCP)
Advanced Options
Here is a complete list of advanced options supported by the fuzzers/ssh/ssh_version_corrupt auxiliary module:
msf6 auxiliary(fuzzers/ssh/ssh_version_corrupt) > show advanced
Module advanced options (auxiliary/fuzzers/ssh/ssh_version_corrupt):
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
FuzzChar X yes Sets the character to use for generating long strings
FuzzTracer MSFROCKS yes Sets the magic string to embed into fuzzer string inputs
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 fuzzers/ssh/ssh_version_corrupt module can do:
msf6 auxiliary(fuzzers/ssh/ssh_version_corrupt) > show actions
Auxiliary actions:
Name Description
---- -----------
Evasion Options
Here is the full list of possible evasion options supported by the fuzzers/ssh/ssh_version_corrupt auxiliary module in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 auxiliary(fuzzers/ssh/ssh_version_corrupt) > 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.
The service may have crashed: iteration:<VALUE> method=<LAST_INP> string=<VALUE> error=<LAST_ERR>
Here is a relevant code snippet related to the "The service may have crashed: iteration:<VALUE> method=<LAST_INP> string=<VALUE> error=<LAST_ERR>" error message:
63: disconnect
64: end
65:
66: if(not @connected)
67: if(last_str)
68: print_status("The service may have crashed: iteration:#{cnt-1} method=#{last_inp} string=#{last_str.unpack("H*")[0]} error=#{last_err}")
69: else
70: print_status("Could not connect to the service: #{last_err}")
71: end
72: return
73: end
Could not connect to the service: <LAST_ERR>
Here is a relevant code snippet related to the "Could not connect to the service: <LAST_ERR>" error message:
65:
66: if(not @connected)
67: if(last_str)
68: print_status("The service may have crashed: iteration:#{cnt-1} method=#{last_inp} string=#{last_str.unpack("H*")[0]} error=#{last_err}")
69: else
70: print_status("Could not connect to the service: #{last_err}")
71: end
72: return
73: end
74:
75: if(not @banner)
The service may have crashed (no banner): iteration:<VALUE> method=<LAST_INP> string=<VALUE>
Here is a relevant code snippet related to the "The service may have crashed (no banner): iteration:<VALUE> method=<LAST_INP> string=<VALUE>" error message:
71: end
72: return
73: end
74:
75: if(not @banner)
76: print_status("The service may have crashed (no banner): iteration:#{cnt-1} method=#{last_inp} string=#{last_str.unpack("H*")[0]} ")
77: return
78: end
79:
80: last_str = str
81: last_inp = @last_fuzzer_input
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Related Pull Requests
- #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
- #2525 Merged Pull Request: Change module boilerplate
- #1228 Merged Pull Request: MSFTIDY cleanup #1 - auxiliary
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See Also
Check also the following modules related to this module:
- auxiliary/fuzzers/ssh/ssh_version_15
- auxiliary/gather/ibm_sametime_version
- auxiliary/scanner/db2/db2_version
- auxiliary/scanner/etcd/version
- auxiliary/scanner/ftp/ftp_version
- auxiliary/scanner/h323/h323_version
- auxiliary/scanner/http/coldfusion_version
- auxiliary/scanner/http/docker_version
- auxiliary/scanner/http/emby_version_ssrf
- auxiliary/scanner/http/http_version
- auxiliary/scanner/http/joomla_version
- auxiliary/scanner/http/sap_businessobjects_version_enum
- auxiliary/scanner/http/ssl_version
- auxiliary/scanner/imap/imap_version
- auxiliary/scanner/ipmi/ipmi_version
- auxiliary/scanner/lotus/lotus_domino_version
- auxiliary/scanner/memcached/memcached_udp_version
- auxiliary/scanner/mysql/mysql_version
- auxiliary/scanner/oracle/tnslsnr_version
- auxiliary/scanner/pop3/pop3_version
- auxiliary/scanner/postgres/postgres_version
- auxiliary/scanner/printer/printer_version_info
- auxiliary/scanner/sap/sap_mgmt_con_version
- auxiliary/scanner/scada/digi_addp_version
- auxiliary/scanner/scada/digi_realport_version
- auxiliary/scanner/smb/smb_version
- auxiliary/scanner/smtp/smtp_version
- auxiliary/scanner/snmp/aix_version
- auxiliary/scanner/ssh/ssh_version
- auxiliary/scanner/telnet/lantronix_telnet_version
- auxiliary/scanner/telnet/telnet_version
- auxiliary/scanner/vmware/vmauthd_version
- auxiliary/scanner/vxworks/wdbrpc_version
- post/multi/gather/enum_software_versions
Authors
- hdm
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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