what you don't know can hurt you
Home Files News &[SERVICES_TAB]About Contact Add New

eNom Inter-Account Transfer Issue

eNom Inter-Account Transfer Issue
Posted Sep 4, 2017
Authored by Joseph Harris

eNom appears to not check for any confirmation from owners when performing domain transfers.

tags | exploit, bypass
SHA-256 | 7d1433ffdd79806fa4a68d7ea53eabd7f14ddfaacf0cc208ce1f0b2f176d6f1d

eNom Inter-Account Transfer Issue

Change Mirror Download
the m group security advisory [2017090100]:
Zero-confirmation inter-account transfers of .uk domains with eNom

* Discovery date: 2017-05-02
* Publish date: 2017-09-01 (+122 days)
* Product: https://www.enom.com/, the website for eNom Inc. and their
APIs, all eNom resellers
* Vulnerable: yes, as of publication date 2017-09-01
* Impact: critical
* Homepage: https://www.enom.com
* Errata by: the m group, Sydney office, <hi@m.pr>
* Reported by: the m group
* URL: https://m.pr/enom-advisory-20170901.html


Vendor description
------------------

eNom is one of the world's largest domain registrars holding over 15
million domain names as well as offering a host of domain and hosting
related services. eNom are also a large internet reseller, powering at
least part of the domain name registration systems for many registrars
including NameCheap.

Website: https://www.enom.com

eNom were recently acquired by Tucows.


Vulnerability & description
---------------------------

eNom allows zero-confirmation .uk domain transfers between reseller
accounts. This bypasses all account security and usual domain transfer
authorization. Combined with instant IPS tag changes at Nominet, the .uk
regional registrar, .uk domains can be hijacked within minutes and
placed into a state where only a manual access restoration procedure
with Nominet can recover the domains.

This vulnerability is accessible to and impacts anyone with an eNom
account or anyone with an account with an eNom reseller which provides
automated domain transfers.

The vulnerability is within eNom's .uk transfer system and impacts .uk
domains only. It does not impact second level .??.uk domains such as
.co.uk and .org.uk.


Steps to reproduce
------------------

1. Open an account with eNom or with an eNom reseller with integrates
with eNom over their APIs, for example NameCheap.
2. Identify a .uk domain managed by eNom. Any .uk domain with an IPS tag
set to ENOM is vulnerable.
3. Issue an inbound transfer request from the reseller.
4. Within a few minutes the .uk domain will "successfully complete"
transfer to your reseller account with no notice given to the original
owner and no confirmation of any kind required.
5. (optional) Immediately transfer the domain elsewhere by changing the
IPS tag and registrant email address making the domain extremely
difficult if not impossible to recover without a manual intervention by
Nominet.


Testing
-------

Confirmed with domain hijacking between NameCheap and eNom using test
domains. The eNom platform and all eNom resellers are assumed to be
vulnerable.


Solution
--------

This vulnerability is with a remote hosted platform there is no
available local solution until eNom resolve the security issue.


Work-around
-----------

Transfer all .uk domains away from eNom. Any .uk domains with the IPS
tag set to ENOM should be transferred away from eNom immediately.

NOTE: during our own domain migrations away from eNom it was discovered
that eNom to not update .uk contact details in certain instances in
their own control panel. This can cause domains to appear to have valid
registrant contact email addresses but they actually have incorrect
details stored at Nominet. Domains which have their IPS tags changed to
push them away from eNom can then be left in a permanently locked and
useless state as authorisation emails sent to invalid registrant contact
addresses can never be authorized.

It is critical that registrant contact details be force-updated from
eNom's control panel before you change the IPS tags even if the contact
details look correct or you may be required to manually contact Nominet
(and pay a fee) to restore your domain. You can verify your .uk
registrant contact details directly with Nominet by opening a Nominet
Online Services account for free.


Vendor contact timeline
-----------------------

Extensive, see the full summary for details.

2017-05-02 (initial report)
2017-05-02 to 2017-08-29 - Significant contact with multiple eNom
representatives.
2017-09-01 (+122 days) - Errata made public.


Login or Register to add favorites

File Archive:

March 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Mar 1st
    16 Files
  • 2
    Mar 2nd
    0 Files
  • 3
    Mar 3rd
    0 Files
  • 4
    Mar 4th
    32 Files
  • 5
    Mar 5th
    28 Files
  • 6
    Mar 6th
    42 Files
  • 7
    Mar 7th
    17 Files
  • 8
    Mar 8th
    13 Files
  • 9
    Mar 9th
    0 Files
  • 10
    Mar 10th
    0 Files
  • 11
    Mar 11th
    15 Files
  • 12
    Mar 12th
    19 Files
  • 13
    Mar 13th
    21 Files
  • 14
    Mar 14th
    38 Files
  • 15
    Mar 15th
    15 Files
  • 16
    Mar 16th
    0 Files
  • 17
    Mar 17th
    0 Files
  • 18
    Mar 18th
    10 Files
  • 19
    Mar 19th
    32 Files
  • 20
    Mar 20th
    46 Files
  • 21
    Mar 21st
    16 Files
  • 22
    Mar 22nd
    13 Files
  • 23
    Mar 23rd
    0 Files
  • 24
    Mar 24th
    0 Files
  • 25
    Mar 25th
    12 Files
  • 26
    Mar 26th
    31 Files
  • 27
    Mar 27th
    19 Files
  • 28
    Mar 28th
    42 Files
  • 29
    Mar 29th
    0 Files
  • 30
    Mar 30th
    0 Files
  • 31
    Mar 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close