CVE-2021-30771
published 2022-03-18CVE-2021-30771: An out-of-bounds write was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.4, iOS 14.6 and iPadOS 14.6, watchOS 7.5, tvOS…
PriorityP343high7.8CVSS 3.1
AVLACLPRNUIRSUCHIHAH
EPSS
1.26%
66.3th percentile
An out-of-bounds write was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.4, iOS 14.6 and iPadOS 14.6, watchOS 7.5, tvOS 14.6. Processing a maliciously crafted font file may lead to arbitrary code execution.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apple | ios_and_ipados | >= unspecified < 14.6 | 14.6 |
| apple | ipados | < 14.6 | 14.6 |
| apple | iphone_os | < 14.6 | 14.6 |
| apple | macos | >= 11.0 < 11.4 | 11.4 |
| apple | macos | >= unspecified < 11.4 | 11.4 |
| apple | macos_big_sur | — | — |
| apple | tvos | < 14.6 | 14.6 |
| apple | tvos | — | — |
| apple | tvos | >= unspecified < 14.6 | 14.6 |
| apple | watchos | < 7.5 | 7.5 |
| apple | watchos | — | — |
| apple | watchos | >= unspecified < 7.5 | 7.5 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
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Apple
CVE-2021-30771: macOS Big Sur 11.4
vendor_apple·2021-05-24·CVSS 7.8
CVE-2021-30771 [HIGH] CVE-2021-30771: macOS Big Sur 11.4
Apple Security Update: About the security content of macOS Big Sur 11.4
Product: macOS Big Sur
Version: 11.4
CVE: CVE-2021-30771
Component: FontParser
Impact: Processing a maliciously crafted font file may lead to arbitrary code execution
Description: An out-of-bounds write was addressed with improved input validation.
Apple
CVE-2021-30771: tvOS 14.6
vendor_apple·2021-05-24·CVSS 7.8
CVE-2021-30771 [HIGH] CVE-2021-30771: tvOS 14.6
Apple Security Update: About the security content of tvOS 14.6
Product: tvOS
Version: 14.6
CVE: CVE-2021-30771
Component: FontParser
Impact: Processing a maliciously crafted font file may lead to arbitrary code execution
Description: An out-of-bounds write was addressed with improved input validation.
Apple
CVE-2021-30771: watchOS 7.5
vendor_apple·2021-05-24·CVSS 7.8
CVE-2021-30771 [HIGH] CVE-2021-30771: watchOS 7.5
Apple Security Update: About the security content of watchOS 7.5
Product: watchOS
Version: 7.5
CVE: CVE-2021-30771
Component: FontParser
Impact: Processing a maliciously crafted font file may lead to arbitrary code execution
Description: An out-of-bounds write was addressed with improved input validation.
GHSA
GHSA-qh6f-fwr4-m984: An out-of-bounds write was addressed with improved input validation
ghsa_unreviewed·2022-03-19
CVE-2021-30771 [HIGH] CWE-787 GHSA-qh6f-fwr4-m984: An out-of-bounds write was addressed with improved input validation
An out-of-bounds write was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.4, iOS 14.6 and iPadOS 14.6, watchOS 7.5, tvOS 14.6. Processing a maliciously crafted font file may lead to arbitrary code execution.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://support.apple.com/en-us/HT212528https://support.apple.com/en-us/HT212529https://support.apple.com/en-us/HT212532https://support.apple.com/en-us/HT212533https://support.apple.com/en-us/HT212528https://support.apple.com/en-us/HT212529https://support.apple.com/en-us/HT212532https://support.apple.com/en-us/HT212533
2022-03-18
Published