CVE-2021-30771 — Out-of-bounds Write in Apple IOS AND Ipados

CWE-787 — Out-of-bounds Write5 documents3 sources
Severity
7.8HIGHNVD
EPSS
0.4%
top 38.91%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
7
Apple IOS AND IpadosApple MacosApple Tvos+4 more
Timeline
PublishedMar 18
Latest updateMar 19

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages12 packages

▶CVEListV5apple/tvosunspecified — 14.6
▶NVDapple/tvos< 14.6
▶CVEListV5apple/macosunspecified — 11.4
▶NVDapple/macos11.0 — 11.4
▶NVDapple/ipados< 14.6

🔴Vulnerability Details

1
GHSA
GHSA-qh6f-fwr4-m984: An out-of-bounds write was addressed with improved input validation↗2022-03-19
▶

📋Vendor Advisories

3
Apple
CVE-2021-30771: macOS Big Sur 11.4↗2021-05-24
▶
Apple
CVE-2021-30771: tvOS 14.6↗2021-05-24
▶
Apple
CVE-2021-30771: watchOS 7.5↗2021-05-24
▶