Description Preview
CVE-2021-43938 affects Elcomplus SmartPTT SCADA Server, allowing unauthenticated users to request various files from the server without any authentication or authorization. This missing authorization vulnerability (CWE-862) could potentially expose sensitive information or allow unauthorized access to critical system files.
Overview
The vulnerability in Elcomplus SmartPTT SCADA Server allows unauthenticated users to bypass authentication mechanisms and request various files directly from the server. This security flaw stems from improper authorization controls (CWE-862: Missing Authorization), enabling attackers to access files that should be restricted. In industrial control system environments, this could lead to exposure of sensitive operational data, configuration information, or other critical files that could be leveraged for further attacks. The vulnerability affects the server component of the SmartPTT SCADA system, which is used for monitoring and controlling industrial processes.
Remediation
Organizations using Elcomplus SmartPTT SCADA Server should:
- Update to the latest version of the software as recommended by Elcomplus
- Implement network segmentation to restrict access to the SCADA server from untrusted networks
- Deploy additional authentication mechanisms such as VPN or application-level firewalls when remote access is required
- Monitor system logs for unauthorized file access attempts
- Follow the specific mitigation guidance provided in the CISA advisory (ICSA-22-109-05)
- Consider implementing the principle of least privilege for all users accessing the system
- Conduct regular security assessments to identify and address similar vulnerabilities
References
- CISA Advisory: https://www.cisa.gov/uscert/ics/advisories/icsa-22-109-05
- CWE-862: Missing Authorization - https://cwe.mitre.org/data/definitions/862.html
- MITRE ATT&CK for ICS: Exploitation of Remote Services - https://attack.mitre.org/techniques/T0866/
- ICS-CERT Recommended Practices - https://www.cisa.gov/uscert/ics/recommended-practices
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
