CVE-2021-30759 — Out-of-bounds Write in Apple Macos

CWE-787 — Out-of-bounds Write5 documents4 sources
Severity
7.8HIGHNVD
EPSS
1.0%
top 22.44%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
8
Apple IOSApple MacosApple Security Update Catalina+5 more
Timeline
PublishedSep 8
Latest updateMay 24

Description

A stack overflow was addressed with improved input validation. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7, Security Update 2021-005 Mojave, Security Update 2021-004 Catalina. 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 Packages9 packages

▶CVEListV5apple/security_update_catalinaunspecified — 2021
▶NVDapple/tvos< 14.7
▶CVEListV5apple/macosunspecified — 11.5+3
▶NVDapple/macos11.0 — 11.5
▶NVDapple/watchos< 7.6

🔴Vulnerability Details

2
GHSA
GHSA-5xrw-9wr4-v4rm: A stack overflow was addressed with improved input validation↗2022-05-24
▶
CVEList
CVE-2021-30759: A stack overflow was addressed with improved input validation↗2021-09-08
▶

📋Vendor Advisories

2
Apple
CVE-2021-30759: Security Update 2021-005 Mojave↗2021-07-21
▶
Apple
CVE-2021-30759: iOS 14.7 and iPadOS 14.7↗
▶