ESB-2017.1730 - [Appliance] ABB VSN300 WiFi Logger Card: Access privileged data - Remote/unauthenticated 2017-07-13

Printable version
PGP/GPG verifiable version

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.1730
                        ABB VSN300 WiFi Logger Card
                               13 July 2017

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           ABB VSN300 WiFi Logger Card
Publisher:         ICS-CERT
Operating System:  Network Appliance
Impact/Access:     Access Privileged Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-7920 CVE-2017-7916 

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-17-192-03

- --------------------------BEGIN INCLUDED TEXT--------------------

Advisory (ICSA-17-192-03)

ABB VSN300 WiFi Logger Card

Original release date: July 11, 2017

Legal Notice

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/low skill level to exploit.

Vendor: ABB

Equipment: VSN300 WiFi Logger Card

Vulnerabilities: Improper Authentication; Permissions, Privileges, and Access
Controls

AFFECTED PRODUCTS

The following versions of VSN300 WiFi Logger Card, a device for solar system 
monitoring, are affected:

VSN300 WiFi Logger Card versions 1.8.15 and prior.

VSN300 WiFi Logger Card for React versions 2.1.3 and prior.

IMPACT

Successful exploitation of these vulnerabilities could allow attackers to gain
unauthorized access to privileged information.

MITIGATION

ABB recommends that users update firmware to version 1.9.0 or newer for WiFi 
Logger Card, and version 2.2.5 or newer for WiFi Logger Card for React. This 
can be done via remote firmware updating with Aurora Vision or via integrated
web user interface by downloading the firmware from the ABB server.

Users can find more information from ABB's security advisory at the following
location:

http://new.abb.com/about/technology/cyber-security/alerts-and-notifications 
(link is external)

NCCIC/ICS-CERT recommends that users take defensive measures to minimize the 
risk of exploitation of these vulnerabilities. Specifically, users should:

Minimize network exposure for all control system devices and/or systems, and 
ensure that they are not accessible from the Internet.

Locate control system networks and remote devices behind firewalls, and 
isolate them from the business network.

When remote access is required, use secure methods, such as Virtual Private 
Networks (VPNs), recognizing that VPNs may have vulnerabilities and should be
updated to the most current version available. Also recognize that VPN is only
as secure as the connected devices.

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.

VULNERABILITY OVERVIEW

IMPROPER AUTHENTICATION CWE-287

By accessing a specific uniform resource locator (URL) on the web server, a 
malicious user is able to access internal information about status and 
connected devices without authenticating.

CVE-2017-7920 has been assigned to this vulnerability. A CVSS v3 base score of
7.5 has been assigned; the CVSS vector string is 
(AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

PERMISSIONS, PRIVILEGES, AND ACCESS CONTROLS CWE-264

The web application does not properly restrict privileges of the "Guest" 
account. A malicious user may be able to gain access to configuration 
information that should be restricted.

CVE-2017-7916 has been assigned to this vulnerability. A CVSS v3 base score of
6.5 has been assigned; the CVSS vector string is 
(AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).

RESEARCHER

Maxim Rupp identified these vulnerabilities.

BACKGROUND

Critical Infrastructure Sector: Energy

Countries/Areas Deployed: Worldwide

Company Headquarters Location: Zurich, Switzerland

Contact Information

For any questions related to this report, please contact ICS-CERT at:

Email: ics-cert@hq.dhs.gov (link sends e-mail)

Toll Free: 1-877-776-7585

International Callers: (208) 526-0900

For industrial control systems security information and incident reporting: 
http://ics-cert.us-cert.gov

ICS-CERT continuously strives to improve its products and services. You can 
help by choosing one of the links below to provide feedback about this 
product.

- --------------------------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 auscert@auscert.org.au
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:

        http://www.auscert.org.au/render.html?cid=1980

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
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-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=Hk+1
-----END PGP SIGNATURE-----

« Back to bulletins