ESB-2018.2702 - [Appliance] Fuji Electric V-Server: Multiple vulnerabilities 2018-09-12

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2702
                         Advisory (ICSA-18-254-01)
                             12 September 2018

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

Product:           Fuji Electric V-Server
Publisher:         ICS-CERT
Operating System:  Network Appliance
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-14823 CVE-2018-14819 CVE-2018-14817
                   CVE-2018-14815 CVE-2018-14813 CVE-2018-14811
                   CVE-2018-14809  

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-18-254-01

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Advisory (ICSA-18-254-01)

Fuji Electric V-Server

Original release date: September 11, 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
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For more information about TLP, see http://www.us-cert.gov/tlp/.


1. EXECUTIVE SUMMARY

  o CVSS v3 7.3
  o ATTENTION: Exploitable remotely/low skill level to exploit/public exploits
    are available
  o Vendor: Fuji Electric
  o Equipment: V-Server
  o Vulnerabilities: Use-After Free, Untrusted Pointer Dereference, Heap-based
    Buffer Overflow, Out-of-Bounds Write, Integer Underflow, Out-of-Bounds
    Read, and Stack-based Buffer Overflow

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow for remote code
execution on the device, causing a denial of service condition or information
exposure.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of V-Server, a data collection and management service,
are affected:

  o V-Server VPR 4.0.3.0 and prior.

3.2 VULNERABILITY OVERVIEW

3.2.1    USE AFTER FREE CWE-416

A use after free vulnerability has been identified, which may allow remote code
execution.

CVE-2018-14809 has been assigned to this vulnerability. A CVSS v3 base score of
7.3 has been calculated; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

3.2.2    UNTRUSTED POINTER DEREFERENCE CWE-822

Multiple untrusted pointer dereference vulnerabilities have been identified,
which may allow remote code execution.

CVE-2018-14811 has been assigned to this vulnerability. A CVSS v3 base score of
7.3 has been calculated; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

3.2.3    HEAP-BASED BUFFER OVERFLOW CWE-122

A heap-based buffer overflow vulnerability has been identified, which may allow
remote code execution.

CVE-2018-14813 has been assigned to this vulnerability. A CVSS v3 base score of
7.3 has been calculated; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

3.2.4    OUT-OF-BOUNDS WRITE CWE-787

Several out-of-bounds write vulnerabilities have been identified, which may
allow remote code execution.

CVE-2018-14815 has been assigned to this vulnerability. A CVSS v3 base score of
7.3 has been calculated; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

3.2.5    INTEGER UNDERFLOW CWE-191

An integer underflow vulnerability has been identified, which may allow remote
code execution.

CVE-2018-14817 has been assigned to this vulnerability. A CVSS v3 base score of
7.3 has been calculated; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

3.2.6    OUT-OF-BOUNDS READ CWE-125

An out-of-bounds read vulnerability has been identified, which may allow remote
code execution.

CVE-2018-14819 has been assigned to this vulnerability. A CVSS v3 base score of
7.3 has been calculated; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

3.2.7    STACK-BASED BUFFER OVERFLOW CWE-121

A stack-based buffer overflow vulnerability has been identified, which may
allow remote code execution.

CVE-2018-14823 has been assigned to this vulnerability. A CVSS v3 base score of
7.3 has been calculated; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

3.3 BACKGROUND

  o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
  o COUNTRIES/AREAS DEPLOYED: Worldwide
  o COMPANY HEADQUARTERS LOCATION: Japan

3.4 RESEARCHER

Steven Seeley (mr_me) of Source Incite working with Trend Micro's Zero Day
Initiative reported these vulnerabilities to NCCIC.

4. MITIGATIONS

Fuji Electric has released Version 4.0.4.0 of the software that can be
downloaded from (login required):

http://monitouch.fujielectric.com/site/support-e/download-index-01.html

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.

Contact Information

For any questions related to this report, please contact the NCCIC at:

Email: NCCICCUSTOMERSERVICE@hq.dhs.gov
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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