8.8Alta KEV

CVE-2021-30858Apple iOS, iPadOS, macOS Use-After-Free Vulnerability

Apple macOS; Apple iOS Publicada: 2021-08-24 21:49 (hace 5 años)

Explotación conocida — Apple iOS, iPadOS, macOS Use-After-Free Vulnerability

CISA confirmó el 03.11.2021 que esta vulnerabilidad se usa en ataques reales. Plazo para las agencias federales de EE. UU.: 17.11.2021.

Acción requerida: Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2021-30858

Descripción

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.

Debilidad (CWE): CWE-416

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Fabricante	Producto	Versiones
Apple	iOS	unspecified – < 14.8
apple	ipados	13.1 – < 14.8
apple	iphone os	< 12.5.5
Apple	macOS	unspecified – < 11.6
debian	debian linux	10.0
fedoraproject	fedora	33

Referencias y parches

https://support.apple.com/en-us/HT212804 Third Party Advisory
https://support.apple.com/en-us/HT212807 Third Party Advisory
20210917 APPLE-SA-2021-09-13-3 macOS Big Sur 11.6 mailing-listMailing ListThird Party Advisory
20210917 APPLE-SA-2021-09-13-1 iOS 14.8 and iPadOS 14.8 mailing-listMailing ListThird Party Advisory
20210917 APPLE-SA-2021-09-13-5 Safari 14.1.2 mailing-listMailing ListThird Party Advisory
[oss-security] 20210920 WebKitGTK and WPE WebKit Security Advisory WSA-2021-0005 mailing-listMailing List
FEDORA-2021-c00e45b6c0 vendor-advisoryRelease Notes
20210921 APPLE-SA-2021-09-20-6 Additional information for APPLE-SA-2021-09-13-1 iOS 14.8 and iPadOS 14.8 mailing-listMailing ListThird Party Advisory
20210921 APPLE-SA-2021-09-20-7 Additional information for APPLE-SA-2021-09-13-3 macOS Big Sur 11.6 mailing-listMailing ListThird Party Advisory
DSA-4975 vendor-advisoryMailing ListThird Party Advisory
DSA-4976 vendor-advisoryMailing ListThird Party Advisory
https://support.apple.com/kb/HT212824 Third Party Advisory
20210924 APPLE-SA-2021-09-23-1 iOS 12.5.5 mailing-listMailing ListThird Party Advisory
FEDORA-2021-edf6957b7d vendor-advisoryRelease Notes
[oss-security] 20211026 WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 mailing-listMailing List
[oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 mailing-listMailing List
[oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 mailing-listMailing List
[oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 mailing-listMailing List
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30858 US Government Resource

Coincidencias CPE (NVD) (8)

cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* ≥ 13.1 < 14.8
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* < 12.5.5
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* ≥ 13.0 < 14.8
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* < 11.6
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

Puntuación CVSS

8.8Alta

Fuente: CISA-ADP · CVSS 3.1

Vector de ataque: Red
Complejidad: Baja
Privilegios: Ninguno
Interacción del usuario: Requerida
Alcance: Sin cambio
Confidencialidad: Alto
Integridad: Alto
Disponibilidad: Alto

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Todas las puntuaciones (4)

CISA-ADP	CVSS 3.1	8.8Alta
nvd	CVSS 3.1	8.8Alta
134c704f-9b21-4f2e-91b3-4a467353bcc0	CVSS 3.1	8.8Alta
nvd	CVSS 2.0	6.8Media

EPSS (probabilidad de explotación en 30 días)

13.38%

superior al 96 % de todas las CVE

Evaluación de CISA (SSVC)

Explotación: active
Automatizable: no
Impacto técnico: total

Cronología

ID reservado2021-04-13
Publicada2021-08-24 21:49
Llegó a IP-DB2026-10-24 23:34
Añadida a KEV2021-11-03
Última actualización2026-06-17 06:51

Asignada por (CNA): apple
Estado en NVD: Analyzed

Ver en la fuente: CVE.org · NVD

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