Description Preview
Zimbra Collaboration Suite (ZCS) versions 8.8.15 and 9.0 expose an mboximport feature that processes ZIP archives. An attacker who bypasses authentication (no authtoken) can upload arbitrary files to the server, enabling directory traversal and remote code execution. This issue stems from an incomplete fix for CVE-2022-27925. The vulnerability is critical due to its network scope, lack of required privileges, and potential impact on confidentiality, integrity, and availability.
Overview
ZCS 8.8.15 and 9.0’s mboximport ZIP extraction capability can be abused by unauthenticated attackers to place files onto the system, potentially executing code remotely. The flaw is a follow-on to an incomplete fix for CVE-2022-27925, amplifying risk by permitting path traversal and arbitrary file writes via crafted ZIP uploads. The CVSS indicates high severity with attacker-controlled file placement and code execution possible over the network.
Remediation
- Upgrade to a patched Zimbra release that includes the complete fix for CVE-2022-37042; apply all available security updates from Zimbra advisories.
- Enforce authentication for the mboximport ZIP upload path; restrict access to trusted users and networks, or disable the mboximport ZIP import feature if it is not required.
- If upgrading is not feasible, implement mitigations: disable or temporarily remove or harden the mboximport ZIP functionality; place strict access controls on the import endpoint; implement a web application firewall rule to block path traversal patterns in ZIP uploads (e.g., ../ sequences and absolute paths).
- Implement input validation and sandboxed extraction: validate ZIP contents before extraction, sanitize file paths, extract ZIPs to a non-privileged, isolated directory with strict file permissions, and avoid writing files to sensitive system paths.
- Enhance monitoring and detection: enable detailed logging around file uploads and ZIP extraction, review for unusual file names or paths, and monitor for known exploitation indicators; consider rotating credentials and reviewing access controls.
- Verify that the fix for CVE-2022-27925 is fully applied and tested in your environment; conduct a targeted test to ensure path traversal and RCE no longer succeed.
References
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: Low
- Accommodation & Food ServicesAccommodation & Food Services: Low
- Administrative, Support, Waste Management & Remediation ServicesAdministrative, Support, Waste Management & Remediation Services: Low
- Agriculture, Forestry Fishing & HuntingAgriculture, Forestry Fishing & Hunting: Low
- Arts, Entertainment & RecreationArts, Entertainment & Recreation: Low
- ConstructionConstruction: Low
- Educational ServicesEducational Services: Low
- Finance and InsuranceFinance and Insurance: Low
- Health Care & Social AssistanceHealth Care & Social Assistance: Low
- InformationInformation: Low
- Management of Companies & EnterprisesManagement of Companies & Enterprises: Low
- MiningMining: Low
- Other Services (except Public Administration)Other Services (except Public Administration): Low
- Professional, Scientific, & Technical ServicesProfessional, Scientific, & Technical Services: Low
- Public AdministrationPublic Administration: Low
- Real Estate Rental & LeasingReal Estate Rental & Leasing: Low
- Retail TradeRetail Trade: Low
- Transportation & WarehousingTransportation & Warehousing: Low
- UtilitiesUtilities: Low
- Wholesale TradeWholesale Trade: Low
