CVE-2020-27943 — Out-of-bounds Write in Apple IOS AND Ipados

CWE-787 — Out-of-bounds WriteCWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer4 documents4 sources
Severity
7.8HIGHNVD
EPSS
0.4%
top 37.20%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
6
Apple IOS AND IpadosApple MacosApple Tvos+3 more
Timeline
PublishedApr 2
Latest updateMay 24

Description

A memory corruption issue existed in the processing of font files. This issue was addressed with improved input validation. This issue is fixed in tvOS 14.3, iOS 14.3 and iPadOS 14.3, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, watchOS 7.2. 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/tvosunspecified — 14.3
▶NVDapple/tvos< 14.3
▶CVEListV5apple/macosunspecified — 11.1
▶NVDapple/macos< 11.1.0
▶CVEListV5apple/watchosunspecified — 7.2

🔴Vulnerability Details

3
GHSA
GHSA-h5f4-vjcr-r562: A memory corruption issue existed in the processing of font files↗2022-05-24
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CVEList
CVE-2020-27943: A memory corruption issue existed in the processing of font files↗2021-04-02
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Project0
Project Zero RCA: CVE-2020-27930: Safari RCE in Type 1 fonts handled by libType1Scaler.dylib↗
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CVE-2020-27943 — Out-of-bounds Write in Apple | cvebase