Description Preview
A vulnerability in Mitsubishi Electric MELSEC iQ-R series Safety CPU modules and SIL2 Process CPU modules allows remote unauthenticated attackers to gain unauthorized access by capturing credentials through network traffic sniffing during user registration or password changes. The vulnerability stems from insufficiently protected credentials (CWE-522) in the affected firmware versions.
Overview
The vulnerability affects Mitsubishi Electric MELSEC iQ-R series Safety CPU modules (R08/16/32/120SFCPU) with firmware versions "26" and prior, as well as MELSEC iQ-R series SIL2 Process CPU modules (R08/16/32/120PSFCPU) with firmware versions "11" and prior. An attacker who can monitor network traffic can capture authentication credentials when legitimate users register new accounts or change passwords. These captured credentials can then be used to gain unauthorized access to the affected systems. This vulnerability is particularly concerning for industrial control systems where unauthorized access could lead to safety issues or operational disruptions.
Remediation
- Update firmware to versions newer than "26" for Safety CPU modules (R08/16/32/120SFCPU) and newer than "11" for SIL2 Process CPU modules (R08/16/32/120PSFCPU).
- Implement network segmentation to restrict access to the affected devices.
- Monitor network traffic for suspicious activities.
- Implement additional authentication mechanisms where possible.
- Follow Mitsubishi Electric's specific security recommendations outlined in their advisory (2021-009).
- Consider implementing encrypted communications for all credential exchanges.
- Regularly change passwords and user credentials even after patching.
References
- Mitsubishi Electric Security Advisory: https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-009_en.pdf
- CISA ICS Advisory: https://www.cisa.gov/uscert/ics/advisories/icsa-21-250-01
- JVN Vulnerability Coordination: https://jvn.jp/vu/JVNVU98578731/index.html
- CWE-522: Insufficiently Protected Credentials: https://cwe.mitre.org/data/definitions/522.html
Industry ExposureMost to leastThis section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.
This section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.
- Accommodation & Food ServicesAccommodation & Food Services
- Administrative, Support, Waste Management & Remediation ServicesAdministrative, Support, Waste Management & Remediation Services
- Agriculture, Forestry Fishing & HuntingAgriculture, Forestry Fishing & Hunting
- Arts, Entertainment & RecreationArts, Entertainment & Recreation
- ConstructionConstruction
- Educational ServicesEducational Services
- Finance and InsuranceFinance and Insurance
- Health Care & Social AssistanceHealth Care & Social Assistance
- InformationInformation
- Management of Companies & EnterprisesManagement of Companies & Enterprises
- ManufacturingManufacturing
- MiningMining
- Other Services (except Public Administration)Other Services (except Public Administration)
- Professional, Scientific, & Technical ServicesProfessional, Scientific, & Technical Services
- Public AdministrationPublic Administration
- Real Estate Rental & LeasingReal Estate Rental & Leasing
- Retail TradeRetail Trade
- Transportation & WarehousingTransportation & Warehousing
- UtilitiesUtilities
- Wholesale TradeWholesale Trade
