NTP Mode 6 UNSETTRAP DRDoS Scanner - Metasploit
This page contains detailed information about how to use the auxiliary/scanner/ntp/ntp_unsettrap_dos metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: NTP Mode 6 UNSETTRAP DRDoS Scanner
Module: auxiliary/scanner/ntp/ntp_unsettrap_dos
Source code: modules/auxiliary/scanner/ntp/ntp_unsettrap_dos.rb
Disclosure date: 2014-08-25
Last modification time: 2017-07-24 06:26:21 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: -
Target network port(s): 123
List of CVEs: CVE-2013-5211
This module identifies NTP servers which permit mode 6 UNSETTRAP requests that can be used to conduct DRDoS attacks. In some configurations, NTP servers will respond to UNSETTRAP requests with multiple packets, allowing remote attackers to cause a distributed, reflected denial of service (aka, "DRDoS" or traffic amplification) via spoofed requests.
Module Ranking and Traits
Module Ranking:
- normal: The exploit is otherwise reliable, but depends on a specific version and can't (or doesn't) reliably autodetect. More information about ranking can be found here.
Basic Usage
This module is a scanner module, and is capable of testing against multiple hosts.
msf > use auxiliary/scanner/ntp/ntp_unsettrap_dos
msf auxiliary(ntp_unsettrap_dos) > show options
... show and set options ...
msf auxiliary(ntp_unsettrap_dos) > set RHOSTS ip-range
msf auxiliary(ntp_unsettrap_dos) > exploit
Other examples of setting the RHOSTS option:
Example 1:
msf auxiliary(ntp_unsettrap_dos) > set RHOSTS 192.168.1.3-192.168.1.200
Example 2:
msf auxiliary(ntp_unsettrap_dos) > set RHOSTS 192.168.1.1/24
Example 3:
msf auxiliary(ntp_unsettrap_dos) > set RHOSTS file:/tmp/ip_list.txt
Required Options
- RHOSTS: The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
Go back to menu.
Msfconsole Usage
Here is how the scanner/ntp/ntp_unsettrap_dos auxiliary module looks in the msfconsole:
msf6 > use auxiliary/scanner/ntp/ntp_unsettrap_dos
msf6 auxiliary(scanner/ntp/ntp_unsettrap_dos) > show info
Name: NTP Mode 6 UNSETTRAP DRDoS Scanner
Module: auxiliary/scanner/ntp/ntp_unsettrap_dos
License: Metasploit Framework License (BSD)
Rank: Normal
Disclosed: 2014-08-25
Provided by:
Jon Hart <[email protected]>
Check supported:
No
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
BATCHSIZE 256 yes The number of hosts to probe in each set
FILTER no The filter string for capturing traffic
INTERFACE no The name of the interface
PCAPFILE no The name of the PCAP capture file to process
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 123 yes The target port (UDP)
SNAPLEN 65535 yes The number of bytes to capture
THREADS 10 yes The number of concurrent threads
TIMEOUT 500 yes The number of seconds to wait for new data
Description:
This module identifies NTP servers which permit mode 6 UNSETTRAP
requests that can be used to conduct DRDoS attacks. In some
configurations, NTP servers will respond to UNSETTRAP requests with
multiple packets, allowing remote attackers to cause a distributed,
reflected denial of service (aka, "DRDoS" or traffic amplification)
via spoofed requests.
References:
https://nvd.nist.gov/vuln/detail/CVE-2013-5211
https://github.com/rapid7/metasploit-framework/pull/3696
http://r-7.co/R7-2014-12
Module Options
This is a complete list of options available in the scanner/ntp/ntp_unsettrap_dos auxiliary module:
msf6 auxiliary(scanner/ntp/ntp_unsettrap_dos) > show options
Module options (auxiliary/scanner/ntp/ntp_unsettrap_dos):
Name Current Setting Required Description
---- --------------- -------- -----------
BATCHSIZE 256 yes The number of hosts to probe in each set
FILTER no The filter string for capturing traffic
INTERFACE no The name of the interface
PCAPFILE no The name of the PCAP capture file to process
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 123 yes The target port (UDP)
SNAPLEN 65535 yes The number of bytes to capture
THREADS 10 yes The number of concurrent threads
TIMEOUT 500 yes The number of seconds to wait for new data
Advanced Options
Here is a complete list of advanced options supported by the scanner/ntp/ntp_unsettrap_dos auxiliary module:
msf6 auxiliary(scanner/ntp/ntp_unsettrap_dos) > show advanced
Module advanced options (auxiliary/scanner/ntp/ntp_unsettrap_dos):
Name Current Setting Required Description
---- --------------- -------- -----------
CHOST no The local client address
CPORT no The local client port
GATEWAY_PROBE_HOST 8.8.8.8 yes Send a TTL=1 random UDP datagram to this host to discover the default gateway's MAC
GATEWAY_PROBE_PORT no The port on GATEWAY_PROBE_HOST to send a random UDP probe to (random if 0 or unset)
IMPLEMENTATION 3 yes Use this NTP mode 7 implementation
NUM_REQUESTS 1 no Number of requests to send
SECRET 1297303073 yes A 32-bit cookie for probe requests.
SRCIP no Use this source IP
ScannerMaxResends 10 yes The maximum times to resend a packet when out of buffers
ScannerRecvInterval 30 yes The maximum numbers of sends before entering the processing loop
ScannerRecvQueueLimit 100 yes The maximum queue size before breaking out of the processing loop
ScannerRecvWindow 15 yes The number of seconds to wait post-scan to catch leftover replies
ShowProgress true yes Display progress messages during a scan
ShowProgressPercent 10 yes The interval in percent that progress should be shown
VERBOSE false no Enable detailed status messages
VERSION 2 yes Use this NTP version
WORKSPACE no Specify the workspace for this module
Auxiliary Actions
This is a list of all auxiliary actions that the scanner/ntp/ntp_unsettrap_dos module can do:
msf6 auxiliary(scanner/ntp/ntp_unsettrap_dos) > show actions
Auxiliary actions:
Name Description
---- -----------
Evasion Options
Here is the full list of possible evasion options supported by the scanner/ntp/ntp_unsettrap_dos auxiliary module in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 auxiliary(scanner/ntp/ntp_unsettrap_dos) > show evasion
Module evasion options:
Name Current Setting Required Description
---- --------------- -------- -----------
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Error Messages
This module may fail with the following error messages:
Check for the possible causes from the code snippets below found in the module source code. This can often times help in identifying the root cause of the problem.
<PEER> - Not vulnerable to <WHAT>: <PROOF>
Here is a relevant code snippet related to the "<PEER> - Not vulnerable to <WHAT>: <PROOF>" error message:
68: :port => rport,
69: :proto => 'udp',
70: :name => what,
71: :refs => self.references
72: })
73: else
74: vprint_status("#{peer} - Not vulnerable to #{what}: #{proof}")
75: end
76: end
77: end
78: end
Go back to menu.
Related Pull Requests
- #8716 Merged Pull Request: Print_Status -> Print_Good (And OCD bits 'n bobs)
- #8518 Merged Pull Request: update CVE reference in where modules report_vuln
- #8338 Merged Pull Request: Fix msf/core and self.class msftidy warnings
- #8185 Merged Pull Request: convert NTP modules to bindata
- #6655 Merged Pull Request: use MetasploitModule as a class name
- #6648 Merged Pull Request: Change metasploit class names
- #3834 Merged Pull Request: Update UDPScanner to support sending from a forged IP, update NTP DDoS modules to use this to demonstrate impact
- #3698 Merged Pull Request: Fixup release
- #3696 Merged Pull Request: Add modules for more NTP amplification attacks -- R7-2014-12
References
See Also
Check also the following modules related to this module:
- auxiliary/scanner/ntp/ntp_monlist
- auxiliary/scanner/ntp/ntp_peer_list_dos
- auxiliary/scanner/ntp/ntp_peer_list_sum_dos
- auxiliary/scanner/ntp/ntp_readvar
- auxiliary/scanner/ntp/ntp_req_nonce_dos
- auxiliary/scanner/ntp/ntp_reslist_dos
- auxiliary/scanner/portmap/portmap_amp
- auxiliary/scanner/upnp/ssdp_amp
- auxiliary/scanner/udp/udp_amplification
- auxiliary/scanner/ntp/ntp_nak_to_the_future
- auxiliary/fuzzers/ntp/ntp_protocol_fuzzer
- exploit/multi/ntp/ntp_overflow
- auxiliary/dos/ntp/ntpd_reserved_dos
- auxiliary/dos/cisco/ios_http_percentpercent
- auxiliary/scanner/http/frontpage_credential_dump
- auxiliary/scanner/http/frontpage_login
- auxiliary/scanner/nessus/nessus_ntp_login
- auxiliary/scanner/nntp/nntp_login
- exploit/linux/http/cayin_cms_ntp
- exploit/linux/http/tr064_ntpserver_cmdinject
- exploit/windows/misc/hp_loadrunner_magentproc
- exploit/windows/misc/hp_loadrunner_magentproc_cmdexec
- exploit/windows/nntp/ms05_030_nntp
Authors
Jon Hart <jon_hart[at]rapid7.com>
Version
This page has been produced using Metasploit Framework version 6.1.28-dev. For more modules, visit the Metasploit Module Library.
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