ICS Advisory (ICSA-23-024-02)

SOCOMEC MODULYS GP

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1. EXECUTIVE SUMMARY

  • CVSS v3 5.7
  • ATTENTION: Exploitable remotely/low attack complexity  
  • Vendor: SOCOMEC  
  • Equipment: MODULYS GP  
  • 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: 

  •  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

  • CRITICAL INFRASTRUCTURE SECTORS: Energy 
  • COUNTRIES/AREAS DEPLOYED: Worldwide 
  • COMPANY HEADQUARTERS LOCATION: France 

3.4 RESEARCHER

Javier Fernandez Beré and Aarón Flecha Menéndez 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:

  • Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the Internet.
  • Locate control system networks and remote devices behind firewalls and isolate them from business networks.
  • 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.  


Contact Information

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

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

For industrial control systems cybersecurity information:  https://us-cert.cisa.gov/ics 
or incident reporting:  https://us-cert.cisa.gov/report

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