CVE-2021-30803: Race Condition

Published Jul 21, 2021
·
Updated

A permissions issue was addressed with improved validation. This issue is fixed in macOS Big Sur 11.5. A malicious application may be able to access a user’s recent Contacts.

Other sources

AMD Kernel. A memory corruption issue was addressed with improved input validation.

— Apple

Analytics. A logic issue was addressed with improved restrictions.

— Apple

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

— Apple

AppKit. An information disclosure issue was addressed by removing the vulnerable code.

— Apple

Audio. This issue was addressed with improved checks.

— Apple

Credit

Matt Shockley (twitter.com/mattshockl), Csaba Fitzl@@theevilbit(Offensive Security), Denis Tokarev@@illusionofcha0s, hjy79425575(Trend Micro Zero Day Initiative), tr3e, George Nosenko, JunDong Xie(Ant Security Light), ryuzaki, Zhongcheng Li (CK01), Ron Waisberg@@epsilan, Tim Michaud@@TimGMichaud(Zoom Video Communications), Gary Nield(ECSC Group plc), Mickey Jin@@patch1t(Trend Micro), Sunglin(Knownsec 404 team), Yizhuo Wang(Group of Software Security In Progress), Linus Henze (pinauten.de), Wojciech Reguła@@_r3ggi(SecuRing), tr3e(Trend Micro Zero Day Initiative), Matt Shockley (twitter.com/mattshockl)(Offensive Security), Jzhu(Baidu Security), Ye Zhang@@co0py_Cat(Baidu Security), CFF(Topsec Alpha Team), Anonymous(Trend Micro Zero Day Initiative), Liu Long(Ant Security Light), Yinyi Wu@@3ndy1(Qihoo 360 Vulcan Team), Zuozhi Fan@@pattern_F_(Ant Security TianQiong Lab), CVE-2021-3518, Georgi Valkov (httpstorm.com), Mickey Jin@@patch1t(Trend Micro working with Trend Micro Zero Day Initiative), Christoph Guttandin(Media Codings), Sergei Glazunov(Google Project Zero), Ivan Fratric(Google Project Zero), ABC Research s.r.o

Affected Software

2 affected componentsFixes available
Apple macOS Big Sur<11.5
11.5
macOS>=11.0<11.5

Event History

Jul 21, 2021
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
DescriptionWeakness
Sep 8, 2021
CVE Published
via MITRE·01:38 PM
Data Sourced
via MITRE·01:38 PM
DescriptionWeakness

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 the vulnerability ID for the permissions issue in Identity Services?

The vulnerability ID for the permissions issue in Identity Services is CVE-2021-30803.

2

What software is affected by the permissions issue in Identity Services?

The permissions issue in Identity Services affects Apple macOS Big Sur version up to and excluding 11.5.

3

How was the permissions issue in Identity Services addressed?

The permissions issue in Identity Services was addressed by improving validation.

4

What is the severity of CVE-2021-30803?

The severity of CVE-2021-30803 is not specified.

5

How can I fix the permissions issue in Identity Services?

To fix the permissions issue in Identity Services, update to macOS Big Sur version 11.5 or later.

Company

Resources

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