-----BEGIN PGP SIGNED MESSAGE-----
AUSCERT External Security Bulletin Redistribution
ICSA-17-115-03 Hyundai Motor America Blue Link
26 April 2017
AusCERT Security Bulletin Summary
Product: Hyundai Blue Link
Operating System: Apple iOS
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Provide Misleading Information -- Remote/Unauthenticated
CVE Names: CVE-2017-6054 CVE-2017-6052
- --------------------------BEGIN INCLUDED TEXT--------------------
Hyundai Motor America Blue Link
Original release date: April 25, 2017
All information products included in http://ics-cert.us-cert.gov are provided
"as is" for informational purposes only. The Department of Homeland Security
(DHS) does not provide any warranties of any kind regarding any information
contained within. DHS does not endorse any commercial product or service,
referenced in this product or otherwise. Further dissemination of this
product is governed by the Traffic Light Protocol (TLP) marking in the
header. For more information about TLP, see http://www.us-cert.gov/tlp/.
CVSS v3 7.5
ATTENTION: Remotely exploitable
Vendor: Hyundai Motor America
Equipment: Blue Link
Vulnerability: Man-in-the-Middle, Use of Hard-Coded Cryptographic Key
The following versions of Blue Link, a mobile application for Hyundai
vehicle management, are affected:
Blue Link Version 3.9.5, and
Blue Link Version 3.9.4.
Successful exploitation of these vulnerabilities may allow a remote attacker
to gain access to insecurely transmitted sensitive information, which could
allow the attacker to locate, unlock, and start a vehicle associated with
the affected application.
Rapid7 working with Hyundai Motor America reports that it would be
difficult to impossible to conduct this attack at scale, since an attacker
would typically need to first subvert physically local networks, or gain
a privileged position on the network path from the app user to their
Hyundai Motor America released Blue Link, Version 3.9.6, a mandatory update
to the application, which mitigates the aforementioned vulnerabilities on
March 6, 2017, for Android devices and March 8, 2017, for iOS devices.
Rapid7 has released a security advisory that can be found at
(link is external)
ICS-CERT reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.
ICS-CERT also provides a section for control systems security recommended
practices on the ICS-CERT web page. Several recommended practices are
available for reading and download, including Improving Industrial Control
Systems Cybersecurity with Defense-in-Depth Strategies.
Additional mitigation guidance and recommended practices are
publicly available in the ICS-CERT Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies, that is available for download from the ICS-CERT web site.
Organizations observing any suspected malicious activity should follow their
established internal procedures and report their findings to ICS-CERT for
tracking and correlation against other incidents.
No known public exploits specifically target these vulnerabilities. High
skill level is needed to exploit.
Communication channel endpoints are not verified, which may allow a remote
attacker to access or influence communications between the identified
CVE-2017-6052 has been assigned to this vulnerability. A CVSS v3
base score of 4.6 has been assigned; the CVSS vector string is
USE OF HARD-CODED CRYPTOGRAPHIC KEY CWE-321
The application uses a hard-coded decryption password to protect sensitive
CVE-2017-6054 has been assigned to this vulnerability. A CVSS v3
base score of 7.5 has been assigned; the CVSS vector string is
These vulnerabilities were discovered by Will Hatzer and Arjun Kumar
working with Rapid7.
Critical Infrastructure Sector(s): Transportation Systems
Countries/Areas Deployed: United States
Company Headquarters Location: Fountain Valley, California
For any questions related to this report, please contact ICS-CERT at:
Email: firstname.lastname@example.org (link sends e-mail)
Toll Free: 1-877-776-7585
International Callers: (208) 526-0900
For industrial control systems security information and incident reporting:
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to email@example.com
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
Australian Computer Emergency Response Team
The University of Queensland
Internet Email: firstname.lastname@example.org
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
-----BEGIN PGP SIGNATURE-----
-----END PGP SIGNATURE-----