PT-2021-5762 · Apple+8 · Macos Big Sur+13

Christoph Guttandin · Published 2021-07-09 · Updated 2024-06-15 · CVE-2021-30758

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Safari versions prior to 14.1.2 iOS versions prior to 14.7 macOS Big Sur versions prior to 11.5 watchOS versions prior to 7.6 tvOS versions prior to 14.7 WebKitGTK, WPE WebKit (affected versions not specified)

Description The issue is related to a type confusion problem with errors in data type conversion. Exploitation of this issue may allow a remote attacker to access confidential data, compromise its integrity, and cause a denial of service using malicious web content. Processing maliciously crafted web content may lead to arbitrary code execution.

Recommendations For Safari versions prior to 14.1.2, update to Safari 14.1.2 or later. For iOS versions prior to 14.7, update to iOS 14.7 or later. For macOS Big Sur versions prior to 11.5, update to macOS Big Sur 11.5 or later. For watchOS versions prior to 7.6, update to watchOS 7.6 or later. For tvOS versions prior to 14.7, update to tvOS 14.7 or later. For WebKitGTK, WPE WebKit, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

Type Confusion

Weakness Enumeration

CWE-843

Related Identifiers

ALSA-2021:4381

BDU:2022-00207

CESA-2021_4381

CVE-2021-30758

DSA-4945-1

MGASA-2021-0400

OPENSUSE-SU-2021:1101-1

OPENSUSE-SU-2021:2598-1

OPENSUSE-SU-2021_1101-1

OPENSUSE-SU-2021_2598-1

OPENSUSE-SU-2024:11506-1

RHSA-2021:4381

RHSA-2021_4381

RHSA-2025:10364

RLSA-2021:4381

SUSE-SU-2021:2598-1

SUSE-SU-2021:2600-1

SUSE-SU-2021:2762-1

USN-5024-1

Affected Products

Almalinux

Astra Linux

Centos

Linuxmint

Apple Macos

Red Hat

Rocky Linux

Safari

Suse

Ubuntu

Ios

Macos Big Sur

Tvos

Watchos

References · 288

• https://ubuntu.com/security/CVE-2021-21775 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-30720 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4945-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5024-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-21779 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-30665 · Vendor Advisory
• https://support.apple.com/en-us/HT212601 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-30758 · Security Note
• https://support.apple.com/en-us/HT212605 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:2598-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:2762-1 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2022-0114SE47 · Vendor Advisory
• https://errata.almalinux.org/8/ALSA-2021-4381.html · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2021-4381.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-00207 · Security Note