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AUSCERT External Security Bulletin Redistribution
ESB-2017.2764
Advisory (ICSA-17-304-01) - ABB FOX515T Improper Input Validation
1 November 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: ABB FOX515T
Publisher: ICS-CERT
Operating System: Network Appliance
Impact/Access: Access Privileged Data -- Existing Account
Resolution: Alternate Program
CVE Names: CVE-2017-14025
Original Bulletin:
https://ics-cert.us-cert.gov/advisories/ICSA-17-304-01
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Advisory (ICSA-17-304-01)
ABB FOX515T
Original release date: October 31, 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 6.2
ATTENTION: Low skill level to exploit.
Vendor: ABB
Equipment: FOX515T
Vulnerability: Improper Input Validation
AFFECTED PRODUCTS
The following versions of FOX515T, a communication interface, are affected:
FOX515T release 1.0
IMPACT
Successful exploitation of this vulnerability could allow for a local attacker
to craft a malicious script that would enable retrieval of any file on the
server.
MITIGATION
ABB reports that the product has been phased out and has reached obsolete
status. No further maintenance is planned for the product.
Please see the ABB Cyber Security Advisory 1KHW028693 on the ABB Alerts and
Notification page 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 this vulnerability. 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 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.
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.
In addition, ICS-CERT recommends that users take the following measures to
protect themselves from social engineering attacks:
- -Do not click web links or open unsolicited attachments in email messages.
- -Refer to Recognizing and Avoiding Email Scams for more information on
avoiding email scams.
- -Refer to Avoiding Social Engineering and Phishing Attacks for more
information on social engineering attacks.
No known public exploits specifically target this vulnerability. This
vulnerability is not remotely exploitable.
VULNERABILITY OVERVIEW
IMPROPER INPUT VALIDATION CWE-20
An improper input validation vulnerability has been identified, allowing a
local attacker to provide a malicious parameter to the script that is not
validated by the application, This could enable the attacker to retrieve any
file on the server.
CVE-2017-14025 has been assigned to this vulnerability. A CVSS v3 base score
of 6.2 has been assigned; the CVSS vector string is
(AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
RESEARCHER
Ketan Bali reported the vulnerability to ABB.
BACKGROUND
Critical Infrastructure Sector(s): Communications
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Switzerland
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
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