Description Preview
Overview
This vulnerability allows attackers to execute arbitrary code on affected Apple devices by exploiting improper validation of dfont files. Dfont files are Macintosh font suitcase files used in Apple operating systems. When a victim processes a specially crafted malicious dfont file, the attacker could potentially gain code execution privileges on the target system. This could lead to unauthorized access, data theft, or further system compromise. The vulnerability affects multiple Apple operating systems and devices, making it a significant security concern for Apple users.
Remediation
To protect against this vulnerability, users should update their Apple devices to the following versions or later:
- iOS 14.8 or iOS 15
- iPadOS 14.8 or iPadOS 15
- macOS Big Sur 11.6
- Security Update 2021-005 Catalina
- tvOS 15
- watchOS 8
Users should install these updates as soon as possible through their device's standard update mechanism. Additionally, users should be cautious when opening font files from untrusted sources and avoid downloading or installing fonts from unofficial websites or other unverified sources.
References
- Apple Security Updates: https://support.apple.com/en-us/HT212804 (iOS 14.8 and iPadOS 14.8)
- Apple Security Updates: https://support.apple.com/en-us/HT212805 (macOS Big Sur 11.6)
- Apple Security Updates: https://support.apple.com/en-us/HT212807 (Security Update 2021-005 Catalina)
- Apple Security Updates: https://support.apple.com/en-us/HT212814 (iOS 15 and iPadOS 15)
- Apple Security Updates: https://support.apple.com/en-us/HT212815 (tvOS 15)
- Apple Security Updates: https://support.apple.com/en-us/HT212819 (watchOS 8)
- Full Disclosure Mailing List: http://seclists.org/fulldisclosure/2021/Oct/61 (iOS 15 and iPadOS 15)
- Full Disclosure Mailing List: http://seclists.org/fulldisclosure/2021/Oct/62 (watchOS 8)
- Full Disclosure Mailing List: http://seclists.org/fulldisclosure/2021/Oct/63 (tvOS 15)
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.
- Educational ServicesEducational Services
- Health Care & Social AssistanceHealth Care & Social Assistance
- Public AdministrationPublic Administration
- Retail TradeRetail Trade
- Arts, Entertainment & RecreationArts, Entertainment & Recreation
- InformationInformation
- Management of Companies & EnterprisesManagement of Companies & Enterprises
- Transportation & WarehousingTransportation & Warehousing
- Wholesale TradeWholesale Trade
- Accommodation & Food ServicesAccommodation & Food Services
- Administrative, Support, Waste Management & Remediation ServicesAdministrative, Support, Waste Management & Remediation Services
- Agriculture, Forestry Fishing & HuntingAgriculture, Forestry Fishing & Hunting
- ConstructionConstruction
- Finance and InsuranceFinance and Insurance
- ManufacturingManufacturing
- MiningMining
- Other Services (except Public Administration)Other Services (except Public Administration)
- Professional, Scientific, & Technical ServicesProfessional, Scientific, & Technical Services
- Real Estate Rental & LeasingReal Estate Rental & Leasing
- UtilitiesUtilities
