Description Preview
A vulnerability has been identified in Ozeki NG SMS Gateway through version 4.17.6. The RSS To SMS module processes XML files without proper validation, making it susceptible to XML External Entity (XXE) attacks. This vulnerability (CWE-611) allows attackers to read arbitrary files on the server's filesystem or perform Server-Side Request Forgery (SSRF) attacks by submitting specially crafted XML input. The XXE vulnerability could potentially lead to information disclosure, server-side request forgery, denial of service, or other security issues depending on the server configuration.
Overview
The Ozeki NG SMS Gateway is a software solution that enables organizations to send and receive SMS messages from various applications. The vulnerability exists in the RSS To SMS module, which is designed to convert RSS feeds into SMS messages. This module processes XML data from RSS feeds but fails to disable external entity processing, which allows attackers to exploit XXE vulnerabilities. An attacker could craft malicious XML content that, when processed by the vulnerable module, could lead to unauthorized access to files on the server's filesystem or enable SSRF attacks to reach internal network resources that would otherwise be inaccessible.
Remediation
To address this vulnerability, system administrators should:
- Update Ozeki NG SMS Gateway to the latest version that includes patches for this vulnerability.
- If immediate updating is not possible, consider disabling the RSS To SMS module until the update can be applied.
- Implement network-level controls to restrict the SMS Gateway's ability to make outbound connections to internal resources.
- Apply the principle of least privilege to the service account running the SMS Gateway application.
- Monitor system logs for suspicious activities that might indicate exploitation attempts.
- Consider implementing a Web Application Firewall (WAF) that can detect and block XXE attack patterns.
References
- Vendor Advisory: http://www.ozeki.hu/index.php?owpn=231
- Exploit Details and Technical Analysis: https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2020-14029-XXE-Ozeki%20SMS%20Gateway
- CWE-611: Improper Restriction of XML External Entity Reference: https://cwe.mitre.org/data/definitions/611.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.
- ManufacturingManufacturing
- 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
- 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
