ESB-2018.2475 - [Appliance] Yokogawa ASTPLANNER, iDefine, STARDOM, and TriFellows: Multiple vulnerabilities 2018-08-22

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2475
           Advisory (ICSA-18-233-01) Yokogawa iDefine, STARDOM,
                        ASTPLANNER, and TriFellows
                              22 August 2018

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

Product:           Yokogawa ASTPLANNER
                   Yokogawa iDefine
                   Yokogawa STARDOM
                   Yokogawa TriFellows
Publisher:         ICS-CERT
Operating System:  Network Appliance
Impact/Access:     Denial of Service               -- Remote/Unauthenticated
                   Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-0651  

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-18-233-01

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Advisory (ICSA-18-233-01)

Yokogawa iDefine, STARDOM, ASTPLANNER, and TriFellows

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

  o CVSS v3 8.6
  o ATTENTION: Remotely exploitable/Low skill level to exploit
  o Vendor: Yokogawa
  o Equipment: iDefine, STARDOM, ASTPLANNER, and TriFellows
  o Vulnerability: Stack-based Buffer Overflow

2. RISK EVALUATION

Successful exploitation of this vulnerability may allow arbitrary code
execution, or the stopping of the license management function.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

According to Yokogawa the following products are affected:

  o ASTPLANNER: R15.01 and prior,
  o iDefine for ProSafe-RS: R1.16.3 and prior,
  o STARDOM: VDS R7.50 and prior and FCN/FCJ Simulator R4.20 and prior, and
  o TriFellows: Version 5.04 and prior.

3.2 VULNERABILITY OVERVIEW

3.2.1    STACK-BASED BUFFER OVERFLOW CWE-121

This vulnerability that affects the license management function when it
receives specially crafted data. An attacker could overflow the buffer by
exploiting this, which may result in the license management function stopping
or result in arbitrary code execution.

CVE-2018-0651 has been assigned to this vulnerability. A CVSS v3 base score of
8.6 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/
C:L/I:L/A:H).

3.3 BACKGROUND

  o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing, Energy, and Food
    and Agriculture
  o COUNTRIES/AREAS DEPLOYED: Worldwide
  o COMPANY HEADQUARTERS LOCATION: Japan

3.4 RESEARCHER

Yokogawa worked with JPCERT to report this vulnerability to NCCIC.

4. MITIGATIONS

Yokogawa recommends users to update to the latest versions or apply the patch:
ASTPLANNER: Update to R15.02.01 or contact support for the patch,

  o iDefine for ProSafe-RS: Update to R1.16.4,
  o STARDOM: Update to VDS R8.10 or contact support for the patch, and
  o TriFellows: Update to Version 5.10 or contact support for the patch.
  o Support:
  o iDefine for ProSafe-RS and STARDOM users: https://contact.yokogawa.com/cs/
    gw?c-id=000498
  o ASTPLANNER and TriFellows users: https://contact.yokogawa.com/cs/gw?c-id=
    000497

When Yokogawa service personnel perform system upgrade or install patches,
those charges are borne by the user. Please contact support in the following
section for the countermeasures regarding the affected products. Yokogawa
strongly suggests all users to introduce appropriate security measures not
only for the vulnerability identified, but also to the overall systems.

Refer to Yokogawa's security notification YSAR-18-0006 for more information,
which can be located here:

https://www.yokogawa.com/library/resources/white-papers/
yokogawa-security-advisory-report-list/

NCCIC recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability. Specifically, users should:

  o Minimize network exposure for all control system devices and/or systems,
    and ensure that they are not accessible from the Internet.
  o Locate control system networks and remote devices behind firewalls, and
    isolate them from the business network.
  o 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.

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 on the ICS-CERT website in the Technical Information Paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies.

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 this vulnerability.

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