CVE-2021-1782: Apple Multiple Products Race Condition Vulnerability

Published Jan 26, 2021
·
Updated

A race condition was addressed with improved locking. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4. A malicious application may be able to elevate privileges. Apple is aware of a report that this issue may have been actively exploited..

Other sources

Apple iOS, iPadOs, macOS, watchOS, and tvOS contain a race condition vulnerability that may allow a malicious application to elevate privileges.

CISA

Kernel. A race condition was addressed with improved locking.

Credit

an anonymous researcher

Affected Software

31 affected componentsFixes available
Apple tvOS<14.4
14.4
Apple macOS Big Sur<11.2
11.2
Apple Catalina
Apple Mojave
Apple WatchOS<7.3
7.3
Apple Multiple Products
Apple iOS<14.4
14.4
Apple iPadOS<14.4
14.4
Apple iPadOS<14.4
Apple iPhone OS<14.4
Apple iOS and macOS>=10.14<10.14.6
Apple iOS and macOS>=10.15<10.15.7
Apple iOS and macOS=10.14.6
Apple iOS and macOS=10.14.6-security_update_2019-004
Apple iOS and macOS=10.14.6-security_update_2019-005
Apple iOS and macOS=10.14.6-security_update_2019-006
Apple iOS and macOS=10.14.6-security_update_2019-007
Apple iOS and macOS=10.14.6-security_update_2020-001
Apple iOS and macOS=10.14.6-security_update_2020-002
Apple iOS and macOS=10.14.6-security_update_2020-003
Apple iOS and macOS=10.14.6-security_update_2020-004
Apple iOS and macOS=10.14.6-security_update_2020-005
Apple iOS and macOS=10.14.6-security_update_2020-006
Apple iOS and macOS=10.14.6-security_update_2020-007
Apple iOS and macOS=10.14.6-supplemental_update
Apple iOS and macOS=10.14.6-supplemental_update_2
Apple iOS and macOS=10.15.7
Apple iOS and macOS=10.15.7-supplemental_update
Apple macOS>=11.0<11.2
Apple tvOS<14.4
Apple WatchOS<7.3

Event History

Apr 2, 2021
CVE Published
via MITRE·05:59 PM
Data Sourced
via MITRE·05:59 PM
DescriptionWeakness
Data Sourced
via NVD·06:15 PM
DescriptionSeverityWeaknessAffected Software
Nov 3, 2021
Known Exploited
via CISA·12:00 AM

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is CVE-2021-1782?

CVE-2021-1782 is a race condition vulnerability in multiple Apple products that allows a malicious application to elevate privileges.

2

Which Apple products are affected by CVE-2021-1782?

CVE-2021-1782 affects macOS Big Sur, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4, and iPadOS 14.4.

3

What is the severity of CVE-2021-1782?

CVE-2021-1782 has a severity rating of high, with a severity value of 7.

4

How can I fix CVE-2021-1782?

To fix CVE-2021-1782, update your affected Apple products to the specified versions: macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4, and iPadOS 14.4.

5

Where can I find more information about CVE-2021-1782?

You can find more information about CVE-2021-1782 on the Apple support page: [link](https://support.apple.com/en-us/HT212146).

Contact

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