ICSA-23-103-15
Vulnerability from csaf_cisa - Published: 2023-04-14 20:06 - Updated: 2023-04-14 20:06Summary
Mitsubishi Electric GOC35 Series
Notes
CISA Disclaimer: This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov
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/.
Risk evaluation: Successful exploitation of this vulnerability could lead to a communication error and may result in a denial-of-service condition.
Critical infrastructure sectors: Critical Manufacturing
Countries/areas deployed: Worldwide
Company headquarters location: India
Recommended Practices: CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
Recommended Practices: Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the Internet.
Recommended Practices: Locate control system networks and remote devices behind firewalls and isolate them from business networks.
Recommended Practices: 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.
Recommended Practices: CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
Recommended Practices: 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.
Recommended Practices: 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.
Recommended Practices: Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
Recommended Practices: No known public exploits specifically target this vulnerability.
7.5 (High)
Vendor Fix
Mitsubishi Electric India has released the following countermeasure/mitigation:
Vendor Fix
The firmware of Extension unit GC-ENET-COM where the first 2 digits of the 11-digit serial number starting with “17” have been fixed. The firmware update in Extension unit GC-ENET-COM is only available from the vendor. Users should contact a local Mitsubishi Electric India representative.
https://mitsubishielectric.in/contact-us
Vendor Fix
Mitsubishi Electric India recommends users take the following mitigations to minimize the risk of attackers exploiting this vulnerability if the mentioned countermeasures cannot be implemented.
Vendor Fix
Use a firewall, virtual private network (VPN), etc. to prevent unauthorized access when internet access is required.
Vendor Fix
Locate control system networks and remote devices behind firewalls and isolate them from the business network to restrict access from untrusted networks and hosts.
Vendor Fix
Restrict physical access to your computer and network equipment on the same network.
References
Acknowledgments
COE-CNDS lab, VJTI, Mumbai India
Faruk Kazi
Parul Sindhwad
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"title": "Recommended Practices"
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"title": "Mitsubishi Electric GOC35 Series",
"tracking": {
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"branches": [
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"category": "product_version_range",
"name": "16XXXXXXXXX.",
"product": {
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"vulnerabilities": [
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"cve": "CVE-2023-1285",
"cwe": {
"id": "CWE-364",
"name": "Signal Handler Race Condition"
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"notes": [
{
"category": "summary",
"text": "A vulnerability exists in the Ethernet communication Extension unit (GC-ENET-COM) of GOC35 series due to a signal handler race condition. If a malicious attacker sends a large number of specially crafted packets, communication errors could occur and could result in a denial-of-service condition when GC-ENET-COM is configured as a Modbus TCP Server. CVE-2023-1285 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).",
"title": "Vulnerability Summary"
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{
"category": "vendor_fix",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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