Description Preview
A Cross-Site Request Forgery (CSRF) vulnerability has been identified in easyii CMS affecting the admin sign-out functionality located at /admin/sign/out. This vulnerability allows attackers to trick authenticated users into performing unwanted actions without their knowledge or consent. When exploited, an attacker can force administrators to log out of their sessions by having them visit a malicious webpage that triggers the sign-out action. The vulnerability exists due to insufficient CSRF protection mechanisms in the application.
Overview
The vulnerability (CVE-2020-36534) affects easyii CMS, a content management system. The issue is classified as CWE-352 (Cross-Site Request Forgery). When an administrator is authenticated to the easyii CMS admin panel, an attacker can craft a malicious webpage that, when visited by the administrator, will trigger an unwanted sign-out action. This occurs because the application does not properly validate that requests to the /admin/sign/out endpoint originate from legitimate user actions rather than from forged requests. While a forced sign-out may seem less severe than other CSRF attacks, it could be used as part of a larger attack chain or for denial of service purposes against administrators.
Remediation
To remediate this vulnerability, the following actions are recommended:
- Update to the latest version of easyii CMS if a patched version is available.
- Implement proper CSRF protection mechanisms:
- Add CSRF tokens to all forms and state-changing requests
- Validate these tokens on the server side before processing sign-out requests
- Set the SameSite attribute on cookies to prevent CSRF attacks
- Consider implementing additional security measures:
- Use the 'SameSite=Strict' cookie attribute for session cookies
- Implement proper referrer checking for sensitive actions
- Add confirmation steps for important actions
- Regularly audit your codebase for similar CSRF vulnerabilities in other endpoints
References
- easyii CMS GitHub Repository: https://github.com/noumo/easyii/
- VulDB Entry with Exploit Details: https://vuldb.com/?id.160278
- OWASP CSRF Prevention Cheat Sheet: https://cheatsheetseries.owasp.org/cheatsheets/Cross-Site_Request_Forgery_Prevention_Cheat_Sheet.html
- CWE-352: Cross-Site Request Forgery: https://cwe.mitre.org/data/definitions/352.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
