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AUSCERT External Security Bulletin Redistribution
ESB-2015.3044
Honeywell Midas Gas Detector Vulnerabilities
7 December 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: Honeywell Midas Gas Detector
Publisher: US-CERT
Operating System: Network Appliance
Impact/Access: Access Privileged Data -- Remote with User Interaction
Unauthorised Access -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2015-7908 CVE-2015-7907
Original Bulletin:
https://ics-cert.us-cert.gov/advisories/ICSA-15-309-02
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Advisory (ICSA-15-309-02)
Honeywell Midas Gas Detector Vulnerabilities
Original release date: December 03, 2015
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/.
OVERVIEW
This advisory was originally posted to the US-CERT secure Portal library on
November 5, 2015, and is being released to the ICS-CERT web site.
Independent researcher Maxim Rupp has identified two vulnerabilities in
Honeywells Midas gas detector. Honeywell has produced firmware versions to
mitigate these vulnerabilities.
These vulnerabilities could be exploited remotely.
AFFECTED PRODUCTS
The following Midas versions are affected:
Midas, Version 1.13b1 and prior versions, and
Midas Black, Version 2.13b1 and prior versions.
IMPACT
Successful exploitation of these vulnerabilities could allow a remote attacker
to gain unauthenticated access to the device, potentially allowing
configuration changes, as well as the initiation of calibration or test
processes.
Impact to individual organizations depends on many factors that are unique to
each organization. NCCIC/ICS-CERT recommends that organizations evaluate the
impact of these vulnerabilities based on their operational environment,
architecture, and product implementation.
BACKGROUND
Honeywell is a US-based company that maintains offices worldwide.
The affected products, Midas and Midas Black gas detectors, test air for
specific toxic, flammable, and ambient gases. According to Honeywell, Midas
gas detectors are deployed across several sectors including Chemical,
Commercial Facilities, Critical Manufacturing, Energy, Food and Agriculture,
Water and Wastewater Systems. Honeywell estimates that these products are used
worldwide.
VULNERABILITY CHARACTERIZATION
VULNERABILITY OVERVIEW
PATH TRAVERSAL [a]
The web server interface allows the authentication process to be bypassed,
potentially allowing unauthorized configuration changes to be made to the
device, as well as the initiation of calibration or test processes.
CVE-2015-7907 [b] has been assigned to this vulnerability. A CVSS v3 base
score of 8.6 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L). [c]
CLEARTEXT TRANSMISSION OF SENSITIVE INFORMATION [d]
The users password is not encrypted during transmission.
CVE-2015-7908 [e] has been assigned to this vulnerability. A CVSS v3 base
score of 9.4 has been assigned; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L). [f]
VULNERABILITY DETAILS
EXPLOITABILITY
These vulnerabilities could be exploited remotely.
EXISTENCE OF EXPLOIT
No known public exploits specifically target these vulnerabilities.
DIFFICULTY
An attacker with low skill would be able to exploit these vulnerabilities.
MITIGATION
Honeywell has released new firmware versions of the Midas and Midas Black gas
detectors, which address the identified vulnerabilities. The new firmware
versions for the Midas gas detector, Version 1.13b3, and the Midas Black gas
detector, Version 2.13b3, are available at the following URL:
http://www.honeywellanalytics.com/en-ca/products/Midas(link is external)
Honeywell recommends that new versions should be installed on all affected
products. Until a new version is applied, Honeywell strongly suggests that
customers with affected products should take the following steps to protect
themselves:
Allow only trained and trusted persons to have physical access to the
system, to include devices connected to the system through the Ethernet
port;
Isolate the system from the Internet, or create additional layers of
defense by placing the affected hardware behind a firewall or into a DMZ;
and
If remote connections to the device are required, consider using a Virtual
Private Networks (VPN) or other means to ensure secure remote connections
into the network.
Honeywells Security Notification, SN 2015-10-14 01 is available at the
following URL:
http://www.honeywellanalytics.com/en/products/Midas(link is external)
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 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 at:
http://ics-cert.us-cert.gov/content/recommended-practices. 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 ICSCERT 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
(http://ics-cert.us-cert.gov/).
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.
a. CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path
Traversal'), http://cwe.mitre.org/data/definitions/22.html, web site last
accessed December 03, 2015.
b. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-7907, NIST
uses this advisory to create the CVE web site report. This web site will be
active sometime after publication of this advisory.
c. CVSS Calculator,
https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S...,
web site last accessed December 03, 2015.
d. CWE-319: Cleartext Transmission of Sensitive Information,
http://cwe.mitre.org/data/definitions/319.html, web site last accessed
December 03, 2015.
e. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-7908, NIST
uses this advisory to create the CVE web site report. This web site will be
active sometime after publication of this advisory.
f. CVSS Calculator,
https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S...,
web site last accessed December 03, 2015.
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.
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