Apple macOS: Processing a maliciously crafted dfont file may lead to arbitrary code…
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
This issue was addressed with improved checks. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, Security Update 2021-005 Catalina, tvOS 15, iOS 15 and iPadOS 15, watchOS 8. Processing a maliciously crafted dfont file may lead to arbitrary code execution.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apple | macOS | before 11.6 | 11.6 | Patch available | CNA |
| Apple | macOS | before 2021 | 2021 | Patch available | CNA |
| Apple | macOS | before 14.8 | 14.8 | Patch available | CNA |
| Apple | macOS | before 15 | 15 | Patch available | CNA |
| Apple | macOS | before 15 | 15 | Patch available | CNA |
| Apple | macOS | before 8 | 8 | Patch available | CNA |
- macOS VendorApple Affected before 11.6 Fixed in 11.6 Patch available CNA
- macOS VendorApple Affected before 2021 Fixed in 2021 Patch available CNA
- macOS VendorApple Affected before 14.8 Fixed in 14.8 Patch available CNA
- macOS VendorApple Affected before 15 Fixed in 15 Patch available CNA
- macOS VendorApple Affected before 15 Fixed in 15 Patch available CNA
- macOS VendorApple Affected before 8 Fixed in 8 Patch available CNA
CPE configurations NVD · 16
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* | before 14.8 | Vulnerable | Apple |
| cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* | before 14.8 | Vulnerable | Apple |
| cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* | 10.15 – 10.15.6 | Vulnerable | Apple |
| cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:* | 10.15.7 | Vulnerable | Apple |
| cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020:*:*:*:*:*:* | 10.15.7 security_update_2020 | Vulnerable | Apple |
| cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:* | 10.15.7 security_update_2020-001 | Vulnerable | Apple |
| cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-005:*:*:*:*:*:* | 10.15.7 security_update_2020-005 | Vulnerable | Apple |
| cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-007:*:*:*:*:*:* | 10.15.7 security_update_2020-007 | Vulnerable | Apple |
| cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-001:*:*:*:*:*:* | 10.15.7 security_update_2021-001 | Vulnerable | Apple |
| cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-002:*:*:*:*:*:* | 10.15.7 security_update_2021-002 | Vulnerable | Apple |
- cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 14.8 Vulnerable ·Apple
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 14.8 Vulnerable ·Apple
- cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions 10.15 – 10.15.6 Vulnerable ·Apple
- cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:* Versions 10.15.7 Vulnerable ·Apple
- cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020:*:*:*:*:*:* Versions 10.15.7 security_update_2020 Vulnerable ·Apple
- cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:* Versions 10.15.7 security_update_2020-001 Vulnerable ·Apple
- cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-005:*:*:*:*:*:* Versions 10.15.7 security_update_2020-005 Vulnerable ·Apple
- cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-007:*:*:*:*:*:* Versions 10.15.7 security_update_2020-007 Vulnerable ·Apple
- cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-001:*:*:*:*:*:* Versions 10.15.7 security_update_2021-001 Vulnerable ·Apple
- cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-002:*:*:*:*:*:* Versions 10.15.7 security_update_2021-002 Vulnerable ·Apple
Show 6 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-003:*:*:*:*:*:* | 10.15.7 security_update_2021-003 | Vulnerable | Apple |
| cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-004:*:*:*:*:*:* | 10.15.7 security_update_2021-004 | Vulnerable | Apple |
| cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:* | 10.15.7 supplemental_update | Vulnerable | Apple |
| cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* | 11.0 to before 11.6 | Vulnerable | Apple |
| cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* | before 15.0 | Vulnerable | Apple |
| cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* | before 8.0 | Vulnerable | Apple |
- cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-003:*:*:*:*:*:* Versions 10.15.7 security_update_2021-003 Vulnerable ·Apple
- cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-004:*:*:*:*:*:* Versions 10.15.7 security_update_2021-004 Vulnerable ·Apple
- cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:* Versions 10.15.7 supplemental_update Vulnerable ·Apple
- cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions 11.0 to before 11.6 Vulnerable ·Apple
- cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 15.0 Vulnerable ·Apple
- cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 8.0 Vulnerable ·Apple
Remediation
- Fix · CNA macOS (Apple) Fixed in 11.6
- Fix · CNA macOS (Apple) Fixed in 2021
- Fix · CNA macOS (Apple) Fixed in 14.8
- Fix · CNA macOS (Apple) Fixed in 15
- Fix · CNA macOS (Apple) Fixed in 15
- Fix · CNA macOS (Apple) Fixed in 8
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apple macOS 11.6
12 records Highest priority Priority LOW 12 LOW
Other records, highest priority first
- TI-2021-11219 Apple macOS: Processing a maliciously crafted image may lead to arbitrary code executionPriority LOW 39
- TI-2021-11214 Apple macOS: Processing a maliciously crafted dfont file may lead to arbitrary code…Priority LOW 37
- TI-2021-11213 Apple macOS: Processing a maliciously crafted dfont file may lead to arbitrary code…Priority LOW 37
- Release ·
Apple macOS 2021
11 records Highest priority Priority LOW 11 LOW
Other records, highest priority first
- TI-2021-11219 Apple macOS: Processing a maliciously crafted image may lead to arbitrary code executionPriority LOW 39
- TI-2021-11214 Apple macOS: Processing a maliciously crafted dfont file may lead to arbitrary code…Priority LOW 37
- TI-2021-11213 Apple macOS: Processing a maliciously crafted dfont file may lead to arbitrary code…Priority LOW 37
Show 3 more groups
- Release ·
Apple macOS 15
5 records Highest priority Priority LOW 5 LOW
Other records, highest priority first
- TI-2021-11219 Apple macOS: Processing a maliciously crafted image may lead to arbitrary code executionPriority LOW 39
- TI-2021-11214 Apple macOS: Processing a maliciously crafted dfont file may lead to arbitrary code…Priority LOW 37
- TI-2021-11213 Apple macOS: Processing a maliciously crafted dfont file may lead to arbitrary code…Priority LOW 37
- Release ·
Apple macOS 8
4 records Highest priority Priority LOW 4 LOW
Other records, highest priority first
- TI-2021-11219 Apple macOS: Processing a maliciously crafted image may lead to arbitrary code executionPriority LOW 39
- TI-2021-11214 Apple macOS: Processing a maliciously crafted dfont file may lead to arbitrary code…Priority LOW 37
- TI-2021-11213 Apple macOS: Processing a maliciously crafted dfont file may lead to arbitrary code…Priority LOW 37
- Release ·
Apple macOS 14.8
3 records Highest priority Priority LOW 3 LOW
Other records, highest priority first
- TI-2021-11214 Apple macOS: Processing a maliciously crafted dfont file may lead to arbitrary code…Priority LOW 37
- TI-2021-11213 Apple macOS: Processing a maliciously crafted dfont file may lead to arbitrary code…Priority LOW 37
Timeline
- 2026-10-02 Threatist record created from CVE-2021-30843
- 2026-10-03 Alias added: GHSA-vj68-8mm2-9q9g
References
Advisory 9
- https://support.apple.com/en-us/HT212804
- https://support.apple.com/en-us/HT212805
- https://support.apple.com/en-us/HT212807
- https://support.apple.com/en-us/HT212814
- https://support.apple.com/en-us/HT212819
- https://support.apple.com/en-us/HT212815
- 20211027 APPLE-SA-2021-10-26-10 Additional information for APPLE-SA-2021-09-20-2 watchOS 8
- 20211027 APPLE-SA-2021-10-26-11 Additional information for APPLE-SA-2021-09-20-3 tvOS 15
- 20211027 APPLE-SA-2021-10-26-9 Additional information for APPLE-SA-2021-09-20-1 iOS 15 and iPadOS 15
More Apple Ipados vulnerabilities
- TI-2025-28008 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 10.0
- TI-2025-22441 Apple iOS and iPadOS: An attacker with arbitrary read and write capability may be able to… KEVCVSS 3.1CRITICAL 9.8
- TI-2025-22440 Memory corruption in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8
- TI-2025-17951 Out-of-bounds write in Apple Safari KEVCVSS 3.1CRITICAL 10.0
- TI-2025-17847 Use after free in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 10.0
- TI-2022-06854 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2021-30843 · CVE Program
- CVE-2021-30843 · NVD
- FIRST EPSS
- GHSA-vj68-8mm2-9q9g · GitHub Advisory Database · CC BY 4.0
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