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AUSCERT External Security Bulletin Redistribution
ESB-2023.0438
Advisory (icsa-23-024-02) SOCOMEC MODULYS GP
25 January 2023
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AusCERT Security Bulletin Summary
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Product: SOCOMEC MODULYS GP
Publisher: ICS-CERT
Operating System: Network Appliance
Resolution: None
CVE Names: CVE-2023-0356
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-23-024-02
Comment: CVSS (Max): 5.7 CVE-2023-0356 (CVSS:3.0/AV:A/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:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
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ICS Advisory (ICSA-23-024-02)
SOCOMEC MODULYS GP
Original release date: January 24, 2023
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 5.7
o ATTENTION: Exploitable remotely/low attack complexity
o Vendor: SOCOMEC
o Equipment: MODULYS GP
o Vulnerability: Weak Encoding for Password
2. RISK EVALUATION
Successful exploitation of this vulnerability could allow an attacker to obtain
sensitive information on the target system.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of SOCOMEC MODULYS GP, a modular UPS, are affected:
o Netvision v7.20
3.2 VULNERABILITY OVERVIEW
3.2.1 WEAK ENCODING FOR PASSWORD CWE-261
SOCOMEC MODULYS GP Netvision versions 7.20 and prior lack strong encryption for
credentials on HTTP connections, which could result in threat actors obtaining
sensitive information.
CVE-2023-0356 has been assigned to this vulnerability. A CVSS v3 base score of
5.7 has been assigned; the CVSS vector string is ( AV:A/AC:L/PR:N/UI:R/S:U/C:H/
I:N/A:N ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Energy
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: France
3.4 RESEARCHER
Javier Fernandez Bere and Aaron Flecha Menendez of S21sec reported this
vulnerability to CISA.
4. MITIGATIONS
SOCOMEC has not responded to requests to work with CISA to mitigate these
vulnerabilities. Users of the affected products are encouraged to contact
SOCOMEC customer support .
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.
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.
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