D-Link User-Agent Backdoor Scanner - Metasploit
This page contains detailed information about how to use the auxiliary/scanner/http/dlink_user_agent_backdoor metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: D-Link User-Agent Backdoor Scanner
Module: auxiliary/scanner/http/dlink_user_agent_backdoor
Source code: modules/auxiliary/scanner/http/dlink_user_agent_backdoor.rb
Disclosure date: 2013-10-12
Last modification time: 2017-07-24 06:26:21 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: http, https
Target network port(s): 80, 443, 3000, 8000, 8008, 8080, 8443, 8880, 8888
List of CVEs: -
This module attempts to find D-Link devices running Alphanetworks web interfaces affected by the backdoor found on the User-Agent header. This module has been tested successfully on a DIR-100 device with firmware version v1.13.
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/http/dlink_user_agent_backdoor
msf auxiliary(dlink_user_agent_backdoor) > show options
... show and set options ...
msf auxiliary(dlink_user_agent_backdoor) > set RHOSTS ip-range
msf auxiliary(dlink_user_agent_backdoor) > exploit
Other examples of setting the RHOSTS option:
Example 1:
msf auxiliary(dlink_user_agent_backdoor) > set RHOSTS 192.168.1.3-192.168.1.200
Example 2:
msf auxiliary(dlink_user_agent_backdoor) > set RHOSTS 192.168.1.1/24
Example 3:
msf auxiliary(dlink_user_agent_backdoor) > set RHOSTS file:/tmp/ip_list.txt
Required Options
- RHOSTS: The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
Go back to menu.
Msfconsole Usage
Here is how the scanner/http/dlink_user_agent_backdoor auxiliary module looks in the msfconsole:
msf6 > use auxiliary/scanner/http/dlink_user_agent_backdoor
msf6 auxiliary(scanner/http/dlink_user_agent_backdoor) > show info
Name: D-Link User-Agent Backdoor Scanner
Module: auxiliary/scanner/http/dlink_user_agent_backdoor
License: Metasploit Framework License (BSD)
Rank: Normal
Disclosed: 2013-10-12
Provided by:
Craig Heffner
Michael Messner <[email protected]>
juan vazquez <[email protected]>
Check supported:
No
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 80 yes The target port (TCP)
SSL false no Negotiate SSL/TLS for outgoing connections
THREADS 1 yes The number of concurrent threads (max one per host)
VHOST no HTTP server virtual host
Description:
This module attempts to find D-Link devices running Alphanetworks
web interfaces affected by the backdoor found on the User-Agent
header. This module has been tested successfully on a DIR-100 device
with firmware version v1.13.
References:
http://www.devttys0.com/2013/10/reverse-engineering-a-d-link-backdoor/
Module Options
This is a complete list of options available in the scanner/http/dlink_user_agent_backdoor auxiliary module:
msf6 auxiliary(scanner/http/dlink_user_agent_backdoor) > show options
Module options (auxiliary/scanner/http/dlink_user_agent_backdoor):
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 80 yes The target port (TCP)
SSL false no Negotiate SSL/TLS for outgoing connections
THREADS 1 yes The number of concurrent threads (max one per host)
VHOST no HTTP server virtual host
Advanced Options
Here is a complete list of advanced options supported by the scanner/http/dlink_user_agent_backdoor auxiliary module:
msf6 auxiliary(scanner/http/dlink_user_agent_backdoor) > show advanced
Module advanced options (auxiliary/scanner/http/dlink_user_agent_backdoor):
Name Current Setting Required Description
---- --------------- -------- -----------
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
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)
ShowProgress true yes Display progress messages during a scan
ShowProgressPercent 10 yes The interval in percent that progress should be shown
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
Auxiliary Actions
This is a list of all auxiliary actions that the scanner/http/dlink_user_agent_backdoor module can do:
msf6 auxiliary(scanner/http/dlink_user_agent_backdoor) > show actions
Auxiliary actions:
Name Description
---- -----------
Evasion Options
Here is the full list of possible evasion options supported by the scanner/http/dlink_user_agent_backdoor auxiliary module in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 auxiliary(scanner/http/dlink_user_agent_backdoor) > 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
Go back to menu.
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> - Failed to connect to the web server
Here is a relevant code snippet related to the "<RHOST>:<RPORT> - Failed to connect to the web server" error message:
36:
37: def is_alpha_web_server?
38: begin
39: res = send_request_cgi({'uri' => '/'})
40: rescue ::Rex::ConnectionError
41: vprint_error("#{rhost}:#{rport} - Failed to connect to the web server")
42: return false
43: end
44:
45: # Signatures:
46: # * httpd-alphanetworks/2.23
<IP> - Alphanetworks web server doesn't detected
Here is a relevant code snippet related to the "<IP> - Alphanetworks web server doesn't detected" error message:
55: def run_host(ip)
56:
57: if is_alpha_web_server?
58: vprint_good("#{ip} - Alphanetworks web server detected")
59: else
60: vprint_error("#{ip} - Alphanetworks web server doesn't detected")
61: return
62: end
63:
64: begin
65: res = send_request_cgi({
<IP>:<RPORT> - Failed to connect to the web server
Here is a relevant code snippet related to the "<IP>:<RPORT> - Failed to connect to the web server" error message:
66: 'uri' => '/',
67: 'method' => 'GET',
68: 'agent' => 'xmlset_roodkcableoj28840ybtide'
69: })
70: rescue ::Rex::ConnectionError
71: vprint_error("#{ip}:#{rport} - Failed to connect to the web server")
72: return
73: end
74:
75: # DIR-100 device with firmware version v1.13
76: # not sure if this matches on other devices
Go back to menu.
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
- #6081 Merged Pull Request: Minor D-Link fixes
- #2525 Merged Pull Request: Change module boilerplate
- #2516 Merged Pull Request: Add module for the dlink user-agent backdoor
References
See Also
Check also the following modules related to this module:
- auxiliary/admin/http/dlink_dir_300_600_exec_noauth
- auxiliary/admin/http/dlink_dir_645_password_extractor
- auxiliary/admin/http/dlink_dsl320b_password_extractor
- auxiliary/admin/vxworks/dlink_i2eye_autoanswer
- auxiliary/scanner/http/dlink_dir_300_615_http_login
- auxiliary/scanner/http/dlink_dir_615h_http_login
- auxiliary/scanner/http/dlink_dir_session_cgi_http_login
- auxiliary/sqli/dlink/dlink_central_wifimanager_sqli
- exploit/linux/http/dlink_authentication_cgi_bof
- exploit/linux/http/dlink_command_php_exec_noauth
- exploit/linux/http/dlink_dcs_930l_authenticated_remote_command_execution
- exploit/linux/http/dlink_dcs931l_upload
- exploit/linux/http/dlink_diagnostic_exec_noauth
- exploit/linux/http/dlink_dir300_exec_telnet
- exploit/linux/http/dlink_dir605l_captcha_bof
- exploit/linux/http/dlink_dir615_up_exec
- exploit/linux/http/dlink_dir850l_unauth_exec
- exploit/linux/http/dlink_dsl2750b_exec_noauth
- exploit/linux/http/dlink_dspw110_cookie_noauth_exec
- exploit/linux/http/dlink_dspw215_info_cgi_bof
- exploit/linux/http/dlink_dwl_2600_command_injection
- exploit/linux/http/dlink_hedwig_cgi_bof
- exploit/linux/http/dlink_hnap_bof
- exploit/linux/http/dlink_hnap_header_exec_noauth
- exploit/linux/http/dlink_hnap_login_bof
- exploit/linux/http/dlink_upnp_exec_noauth
- exploit/linux/upnp/dlink_dir859_exec_ssdpcgi
- exploit/linux/upnp/dlink_dir859_subscribe_exec
- exploit/windows/http/dlink_central_wifimanager_rce
- exploit/windows/tftp/dlink_long_filename
- auxiliary/scanner/upnp/ssdp_msearch
- exploit/linux/upnp/dlink_upnp_msearch_exec
- auxiliary/scanner/backdoor/energizer_duo_detect
- exploit/windows/backdoor/energizer_duo_payload
Authors
- Craig Heffner
- Michael Messner <devnull[at]s3cur1ty.de>
- juan vazquez
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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