Vulnerability CVE-2021-30771
Published: 2022-03-18

Description:
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.

Type:

CWE-787

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Apple -> Ipados 
Apple -> Iphone os 
Apple -> Macos 
Apple -> TVOS 
Apple -> Watchos 

 References:
https://support.apple.com/en-us/HT212529
https://support.apple.com/en-us/HT212528
https://support.apple.com/en-us/HT212532
https://support.apple.com/en-us/HT212533
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