ESB-2021.2282 – [Win] Panasonic FPWIN Pro: Access confidential data – Existing account

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AUSCERT External Security Bulletin Redistribution

ESB-2021.2282
Advisory (icsa-21-180-03) Panasonic FPWIN Pro
30 June 2021

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AusCERT Security Bulletin Summary
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Product: Panasonic FPWIN Pro
Publisher: ICS-CERT
Operating System: Windows
Impact/Access: Access Confidential Data — Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-32972

Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-21-180-03

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ICS Advisory (ICSA-21-180-03)

Panasonic FPWIN Pro

Original release date: June 29, 2021

Legal Notice

All information products included in https://us-cert.cisa.gov/ics 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 https://us-cert.cisa.gov/tlp/ .

1. EXECUTIVE SUMMARY

o CVSS v3 5.9
o ATTENTION: Low attack complexity
o Vendor: Panasonic
o Equipment: FPWIN Pro
o Vulnerability: Improper Restriction of XML External Entity Reference

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow a remote attacker to
retrieve sensitive information from the file system where affected software is
installed.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Panasonic reports this vulnerability affects the following products:

o FPWIN Pro programming control software: All Versions 7.5.1.1 and prior

3.2 VULNERABILITY OVERVIEW

3.2.1 IMPROPER RESTRICTION OF XML EXTERNAL ENTITY REFERENCE CWE-611

A specially crafted project file specifying a URI causes the XML parser to
access the URI and embed the contents, which may allow an attacker to disclose
information that is accessible in the context of the user executing software.

CVE-2021-32972 has been assigned to this vulnerability. A CVSS v3 base score of
5.9 has been calculated; the CVSS vector string is ( AV:L/AC:L/PR:L/UI:R/S:C/
C:H/I:N/A:N ).

3.3 BACKGROUND

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

3.4 RESEARCHER

Michael Heinzl reported this vulnerability to CISA.

4. MITIGATIONS

Panasonic has released FPWIN Pro v7.5.2.0 to address this vulnerability.

For more information about this issue, please contact the Panasonic Product
Security Incident Response Team .

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 recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability. 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.cisa.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.cisa.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 this vulnerability. This
vulnerability is not exploitable remotely.

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

Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870

CISA 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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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.
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