Operating System:

[Win]

Published:

11 September 2019

Protect yourself against future threats.

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.3443
Multiple vulnerabilities have been identified in Delta Electronics TPEditor
                             11 September 2019

===========================================================================

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

Product:           Delta Electronics TPEditor
Publisher:         ICS-CERT
Operating System:  Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
                   Access Confidential Data        -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-13544 CVE-2019-13540 CVE-2019-13536

Original Bulletin: 
   https://www.us-cert.gov/ics/advisories/icsa-19-253-01

- --------------------------BEGIN INCLUDED TEXT--------------------

ICS Advisory (ICSA-19-253-01)

Delta Electronics TPEditor

Original release date: September 10, 2019

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 7.8
  o ATTENTION: Low skill level to exploit
  o Vendor: Delta Electronics
  o Equipment: TPEditor
  o Vulnerabilities: Stack-based Buffer Overflow, Heap-based Buffer Overflow,
    Out-of-bounds Write

2. RISK EVALUATION

Successful exploitation of these vulnerabilities may allow information
disclosure, remote code execution, or may crash the application.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of TPEditor, a programming software for Delta text
panels, are affected:

  o TPEditor Versions 1.94 and prior

3.2 VULNERABILITY OVERVIEW

3.2.1 STACK-BASED BUFFER OVERFLOW CWE-121

Multiple stack-based buffer overflow vulnerabilities may be exploited by
processing specially crafted project files, which may allow an attacker to
remotely execute arbitrary code.

CVE-2019-13540 has been assigned to these vulnerabilities. A CVSS v3 base score
of 7.8 has been calculated; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U
/C:H/I:H/A:H ).

3.2.2 HEAP-BASED BUFFER OVERFLOW CWE-122

Multiple heap-based buffer overflow vulnerabilities may be exploited by
processing specially crafted project files, which may allow an attacker to
remotely execute arbitrary code.

CVE-2019-13536 has been assigned to these vulnerabilities. A CVSS v3 base score
of 7.8 has been calculated; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U
/C:H/I:H/A:H )

3.2.3 OUT-OF-BOUNDS WRITE CWE-787

Multiple out-of-bounds write vulnerabilities may be exploited by processing
specially crafted project files, which may allow remote code execution.

CVE-2019-13544 has been assigned to these vulnerabilities. A CVSS v3 base score
of 7.8 has been calculated; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U
/C:H/I:H/A:H ).

3.3 BACKGROUND

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

3.4 RESEARCHER

kimiya of 9sg Security Team working with Trend Micro's Zero Day Initiative
(ZDI) reported these vulnerabilities to CISA.

4. MITIGATIONS

Delta Electronics recommends affected users update to the latest version of
Delta Industrial Automation TPEditor, Version 1.95, which is available for
download at:

http://www.deltaww.com/services/DownloadCenter2.aspxsecID=8&pid=2&tid=0&CID=06
&itemID=060302&typeID=1&downloadID=&title=&dataType=8;&check=1&hl=en-US

Delta Electronics also recommends affected users restrict the interaction with
the application to trusted files.
CISA recommends users take the following measures to protect themselves from
social engineering attacks:

  o Do not click web links or open unsolicited attachments in email messages.
  o Refer to Recognizing and Avoiding Email Scams for more information on
    avoiding email scams.
  o Refer to Avoiding Social Engineering and Phishing Attacks for more
    information on social engineering attacks.

CISA reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices
on the ICS webpage on us-cert.gov . 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 webpage on us-cert.gov 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 CISA for tracking
and correlation against other incidents.

No known public exploits specifically target these vulnerabilities. These
vulnerabilities are not exploitable remotely.

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=g2cO
-----END PGP SIGNATURE-----