Description Preview
A vulnerability in Ghost CMS versions 4.0.0 through 4.9.4 allows any authenticated user, including those with limited contributor permissions, to access admin-level API keys through the integrations API endpoint. This implementation error in the limits service creates a privilege escalation risk where lower-privileged users can gain administrative access to the system.
Overview
Ghost is a popular Node.js content management system used by many websites and blogs. The vulnerability (CVE-2021-39192) exists in the limits service implementation, which failed to properly restrict access to sensitive API endpoints. When exploited, any authenticated user can access the integrations API endpoint and view admin-level API keys. This allows contributors and other non-administrator users to escalate their privileges and potentially gain complete control over the Ghost installation. The vulnerability affects all Ghost installations running versions 4.0.0 through 4.9.4.
Remediation
To address this vulnerability, take the following actions:
- Update Ghost to version 4.10.0 or later, which contains the security patch.
- After updating, regenerate all API keys to invalidate any that may have been compromised.
- If immediate updating is not possible, disable all non-Administrator accounts as a temporary workaround to prevent unauthorized API access.
- Review system logs for any suspicious activity that might indicate exploitation of this vulnerability.
- Consider implementing additional access controls and monitoring for your Ghost installation.
References
- Ghost Release Notes v4.10.0: https://github.com/TryGhost/Ghost/releases/tag/v4.10.0
- GitHub Security Advisory: https://github.com/TryGhost/Ghost/security/advisories/GHSA-j5c2-hm46-wp5c
- CWE-269: Improper Privilege Management - https://cwe.mitre.org/data/definitions/269.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
