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AUSCERT External Security Bulletin Redistribution
ESB-2018.1078
Advisory (ICSA-18-100-02): Multiple vulnerabilities have
been identified in Omron CX-One
11 April 2018
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Omron CX-One
Publisher: ICS-CERT
Operating System: Network Appliance
Windows
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2018-8834 CVE-2018-7530 CVE-2018-7514
Original Bulletin:
https://ics-cert.us-cert.gov/advisories/ICSA-18-100-02
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Advisory (ICSA-18-100-02)
Omron CX-One
Original release date: April 10, 2018
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/.
1. EXECUTIVE SUMMARY
CVSS v3 5.3
ATTENTION: Low skill level to exploit.
Vendor: Omron
Equipment: CX-One
Vulnerabilities: Stack-based Buffer Overflow, Heap-based Buffer Overflow, Type
Confusion.
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow remote code
execution.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of CX-One are affected:
CX-One Versions 4.42 and prior, including the following applications:
CX-FLnet versions 1.00 and prior,
CX-Protocol versions 1.992 and prior,
CX-Programmer versions 9.65 and prior,
CX-Server versions 5.0.22 and prior,
Network Configurator versions 3.63 and prior, and
Switch Box Utility versions 1.68 and prior.
3.2 VULNERABILITY OVERVIEW
3.2.1 HEAP-BASED BUFFER OVERFLOW CWE-122
Parsing malformed project files may cause a heap-based buffer overflow.
CVE-2018-8834 has been assigned to this vulnerability. A CVSS v3 base score of
5.3 has been calculated; the CVSS vector string is
(AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L).
3.2.2 STACK-BASED BUFFER OVERFLOW CWE-121
Parsing malformed project files may cause a stack-based buffer overflow.
CVE-2018-7514 has been assigned to this vulnerability. A CVSS v3 base score of
5.3 has been calculated; the CVSS vector string is
(AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L).
3.2.3 ACCESS OF RESOURCE USING INCOMPATIBLE TYPE (TYPE CONFUSION) CWE-843
Parsing malformed project files may allow the pointer to call an incorrect
object resulting in an access of resource using incompatible type condition.
CVE-2018-7530 has been assigned to this vulnerability. A CVSS v3 base score of
5.3 has been calculated; the CVSS vector string is
(AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L).
3.3 BACKGROUND
Critical Infrastructure Sectors: Critical Manufacturing
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Japan
3.4 RESEARCHER
Rgod, working with Trend Micro's Zero Day Initiative, reported these
vulnerabilities to NCCIC.
4. MITIGATIONS
Omron has released an updated version of CX-One to address the reported
vulnerabilities. These releases are available through the CX-One auto-update
service.
CX-FLnet version 1.10,
CX-Protocol version 1.993,
CX-Programmer versions 9.66,
Common Module including CX-Server version 5.0.23,
Network Configurator version 3.64, and
Switch Box Utility version 1.69
NCCIC 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.
NCCIC reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.
NCCIC 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 website.
Organizations observing any suspected malicious activity should follow their
established internal procedures and report their findings to NCCIC for
tracking and correlation against other incidents.
No known public exploits specifically target these vulnerabilities. These
vulnerabilities are not exploitable remotely.
Contact Information
For any questions related to this report, please contact the NCCIC at:
Email: NCCICCUSTOMERSERVICE@hq.dhs.gov (link sends e-mail)
Toll Free: 1-888-282-0870
For industrial control systems cybersecurity information:
http://ics-cert.us-cert.gov
or incident reporting: https://ics-cert.us-cert.gov/Report-Incident?
The NCCIC 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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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
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