CVE-2021-30770: Input Validation

Published Jul 19, 2021
·
Updated

A logic issue was addressed with improved validation. This issue is fixed in iOS 14.7, tvOS 14.7, watchOS 7.6. An attacker that has already achieved kernel code execution may be able to bypass kernel memory mitigations.

Other sources

ActionKit. An input validation issue was addressed with improved input validation.

— Apple

Analytics. A logic issue was addressed with improved restrictions.

— Apple

Analytics. This issue was addressed with a new entitlement.

— Apple

App Store. A permissions issue was addressed with improved validation.

— Apple

Audio. This issue was addressed with improved checks.

— Apple

Credit

Linus Henze (pinauten.de), Zachary Keffaber@@QuickUpdate5, Denis Tokarev@@illusionofcha0s, tr3e, George Nosenko, JunDong Xie(Ant Security Light), ryuzaki, Mickey Jin@@patch1t(Trend Micro), Sunglin(Knownsec 404 team), Yizhuo Wang(Group of Software Security In Progress), Tim Michaud@@TimGMichaud(Zoom Video Communications), Csaba Fitzl@@theevilbit(Offensive Security), tr3e(Trend Micro Zero Day Initiative), hjy79425575(Trend Micro Zero Day Initiative), Matthew Denton(Google Chrome Security), Jzhu(Baidu Security), Ye Zhang@@co0py_Cat(Baidu Security), CFF(Topsec Alpha Team), CVE-2021-3518, CVE-2018-25010, CVE-2018-25011, CVE-2018-25014, CVE-2020-36328, CVE-2020-36329, CVE-2020-36330, CVE-2020-36331, Anonymous(Trend Micro Zero Day Initiative), Christoph Guttandin(Media Codings), Sergei Glazunov(Google Project Zero), Ivan Fratric(Google Project Zero), vm_call, Nozhdar Abdulkhaleq Shukri, Mickey Jin@@patch1t(Trend Micro working with Trend Micro Zero Day Initiative), Georgi Valkov (httpstorm.com)

Affected Software

7 affected componentsFixes available
Apple tvOS<14.7
14.7
Apple WatchOS<7.6
7.6
Apple iPhone OS<14.7
Apple tvOS<14.7
Apple WatchOS<7.6
Apple iOS<14.7
14.7
Apple iPadOS<14.7
14.7

Event History

Jul 19, 2021
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
DescriptionWeakness
Updated
via Apple·12:00 AM
Affected Software
Updated
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Sep 8, 2021
CVE Published
via MITRE·01:46 PM
Data Sourced
via MITRE·01:46 PM
DescriptionWeakness
Feb 24, 2026
Updated
via Apple·07:00 PM
DescriptionWeaknessAffected Software
Updated
via Apple·07:00 PM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is CVE-2021-30770?

CVE-2021-30770 is a vulnerability in the Kernel that was addressed with improved validation.

2

Which software is affected by CVE-2021-30770?

The affected software includes Apple watchOS up to version 7.6 and Apple tvOS up to version 14.7.

3

How can I fix CVE-2021-30770?

To fix CVE-2021-30770, update your Apple watchOS to version 7.6 or later and Apple tvOS to version 14.7 or later.

4

Where can I find more information about CVE-2021-30770?

You can find more information about CVE-2021-30770 in the following references: [Apple Support Article 1](https://support.apple.com/en-us/HT212604) and [Apple Support Article 2](https://support.apple.com/en-us/HT212605).

5

What is the severity of CVE-2021-30770?

The severity of CVE-2021-30770 has not been specified.

Company

Resources

Contact

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CVE-2021-30770 - Input Validation - SecAlerts