ESB-2018.2975 - [Win] Delta Electronics ISPSoft: Multiple vulnerabilities 2018-10-03

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2975
            Advisory (ICSA-18-275-01) Delta Electronics ISPSoft
                              3 October 2018

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

Product:           Delta Electronics ISPSoft
Publisher:         ICS-CERT
Operating System:  Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-14800  

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-18-275-01

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Advisory (ICSA-18-275-01)

Delta Electronics ISPSoft

Original release date: October 02, 2018

Legal Notice

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For more information about TLP, see http://www.us-cert.gov/tlp/.

1. EXECUTIVE SUMMARY

  o CVSS v3 5.3
  o ATTENTION: Exploitable remotely/Low skill level to exploit
  o Vendor: Delta Electronics
  o Equipment: ISPSoft
  o Vulnerability: Stack-based Buffer Overflow

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to
execute code under the context of the application.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of ISPSoft, a PLC program development tool, are
affected:

  o ISPSoft Version 3.0.5 and prior.

3.2 VULNERABILITY OVERVIEW

3.2.1    STACK-BASED BUFFER OVERFLOW CWE-121

By opening a crafted file, an attack can cause the application to read past the
boundary allocated to a stack object, which could allow execution of code under
the context of the application.

CVE-2018-14800 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

  o CRITICAL INFRASTRUCTURE SECTOR: Critical Manufacturing
  o COUNTRIES/AREAS DEPLOYED: Worldwide
  o COMPANY HEADQUARTERS LOCATION: Taiwan

3.4 RESEARCHER

Ariele Caltabiano (kimiya) working with Trend Micro's Zero Day Initiative
reported this vulnerability to NCCIC.

4. MITIGATIONS

Delta Electronics recommends affected users update to ISPSoft v3.0.6 or newer.
The update can be downloaded from the following location:

http://www.deltaww.com/services/DownloadCenter2.aspx?secID=8&pid=2&tid=0&CID=06
&itemID=060301&typeID=1&downloadID=DVP-SE%20Series,&title=DVP-SE%20Series&
dataType=8;&check=1&hl=en-US

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.

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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