CVE-2021-30773: Input Validation

Published Jul 19, 2021
·
Updated

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

Other sources

An issue in code signature validation was addressed with improved checks. This issue is fixed in iOS 14.7, tvOS 14.7, watchOS 7.6. A malicious application may be able to bypass code signing checks.

— MITRE

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), 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, Zachary Keffaber@@QuickUpdate5, Denis Tokarev@@illusionofcha0s, tr3e, 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·01:47 PM
Data Sourced
via MITRE·01:47 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-2021-30773?

CVE-2021-30773 is a vulnerability in the Identity Service that allowed for an issue in code signature validation.

2

Who is affected by CVE-2021-30773?

Users of Apple watchOS versions up to and excluding 7.6 and Apple tvOS versions up to and excluding 14.7 are affected by CVE-2021-30773.

3

How severe is CVE-2021-30773?

The severity of CVE-2021-30773 is not specified in the provided information.

4

What is the remedy for CVE-2021-30773?

Apple has released updates (watchOS 7.6 and tvOS 14.7) that address the issue in code signature validation.

5

Where can I find more information about CVE-2021-30773?

You can find more information about CVE-2021-30773 on the Apple support website.

Company

Resources

Contact

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