Description Preview
Overview
The vulnerability exists in the ELECOM WRC-300FEBK-S router's certificate validation mechanism. When the device communicates with remote servers, it fails to properly validate SSL/TLS certificates. This improper validation allows an attacker positioned between the router and legitimate servers to intercept and modify communications by presenting fake certificates that the router will accept as valid. By manipulating the communication responses, an attacker can inject malicious commands that may be executed by the router's operating system with the privileges of the running processes. This vulnerability is particularly dangerous as it could lead to complete compromise of the affected device, potentially allowing attackers to access the internal network, modify router configurations, or use the device as part of a larger attack.
Remediation
Users of affected ELECOM WRC-300FEBK-S routers should:
- Update the router firmware to the latest version provided by ELECOM that addresses this vulnerability
- Check the ELECOM security advisory for specific update instructions
- After updating, change all router administration passwords
- Review and restrict remote management access to the router
- Monitor for unusual network activity that might indicate compromise
- Consider implementing network segmentation to limit potential damage if the router is compromised
References
- JPCERT Coordination Center Advisory: https://jvn.jp/en/jp/JVN47580234/index.html
- ELECOM Security Advisory: https://www.elecom.co.jp/news/security/20210126-01/
- Common Weakness Enumeration: CWE-295 (Improper Certificate Validation)
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.
- 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
