Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2022.4073
Advisory (icsa-22-228-02) LS ELECTRIC PLC and XG5000
17 August 2022
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: LS ELECTRIC PLC
XG5000
Publisher: ICS-CERT
Operating System: Network Appliance
Resolution: Mitigation
CVE Names: CVE-2022-2758
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-22-228-02
Comment: CVSS (Max): 6.5 CVE-2022-2758 (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N)
CVSS Source: ICS-CERT
Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- --------------------------BEGIN INCLUDED TEXT--------------------
ICS Advisory (ICSA-22-228-02)
LS ELECTRIC PLC and XG5000
Original release date: August 16, 2022
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 6.5
o ATTENTION: Exploitable remotely
o Vendor : LS Electric, LS Industrial Systems (LSIS) Co. Ltd
o Equipment: LS ELEC PLC and XG5000
o Vulnerability: Inadequate Encryption Strength
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow an attacker to
decrypt credentials and gain full access to the affected programmable logic
controller (PLC).
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of LS ELECTRIC PLC, a PLC, and XG5000, a PLC programming
software, are affected:
o LS Electric PLC: All versions
o XG5000: All versions
3.2 VULNERABILITY OVERVIEW
3.2.1 INADEQUATE ENCRYPTION STRENGTH CWE-326
Passwords are not adequately encrypted during the communication process between
the XG5000 software and the affected PLC. This could allow an attacker to
identify and decrypt the affected PLC's password by sniffing the traffic.
CVE-2022-2758 has been assigned to this vulnerability. A CVSS v3 base score of
6.5 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:R/S:U/C:H/
I:N/A:N ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Multiple
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: South Korea
3.4 RESEARCHER
Hong-Gi Kin of the Korea Internet & Security Agency (KISA) reported this
vulnerability to CISA.
4. MITIGATIONS
LS Electric is aware of the vulnerability and is developing mitigations. Users
of these affected products are recommended to contact LS Electric for
additional information.
CISA 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 they are not accessible from the Internet .
o Locate control system networks and remote devices behind firewalls and
isolate them from business networks.
o When remote access is required, use secure methods, such as Virtual Private
Networks (VPNs), recognizing VPNs may have vulnerabilities and should be
updated to the most current version available. Also recognize VPN is only
as secure as its connected devices.
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 at cisa.gov/ics . Several CISA products detailing cyber
defense best 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 at cisa.gov/ics in the technical information paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies .
Organizations observing suspected malicious activity should follow established
internal procedures and report findings to CISA for tracking and correlation
against other incidents.
CISA also 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.
No known public exploits specifically target this vulnerability.
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.
- --------------------------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: https://auscert.org.au/gpg-key/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=xb5M
-----END PGP SIGNATURE-----