Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2020-27931

Severity CVSS v4.0:
Pending analysis
Type:
CWE-787 Out-of-bounds Write
Publication date:
02/04/2021
Last modified:
09/01/2023

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 iOS 14.0 and iPadOS 14.0, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, macOS Big Sur 11.0.1, watchOS 7.0, tvOS 14.0. Processing a maliciously crafted font file may lead to arbitrary code execution.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:M/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
6.80
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* 11.1.0 (excluding)
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* 14.0 (excluding)
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* 14.0 (excluding)
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* 11.0.1 (excluding)
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* 14.0 (excluding)
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* 7.0 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools