CVE-2021-1876: Use After Free

Published Apr 26, 2021
·
Updated

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. Processing maliciously crafted web content may lead to arbitrary code execution.

Other sources

NSRemoteView. A use after free issue was addressed with improved memory management.

Credit

Matthew Denton(Google Chrome), Matthew Denton(Google Chrome), Matthew Denton(Google Chrome)

Affected Software

33 affected componentsFixes available
Apple macOS Big Sur<11.3
11.3
Apple Catalina
Apple Mojave
Apple iOS and macOS>=10.14<=10.14.5
Apple iOS and macOS>=10.15<=10.15.5
Apple iOS and macOS=10.14.6
Apple iOS and macOS=10.14.6-security_update_2019-001
Apple iOS and macOS=10.14.6-security_update_2019-002
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-security_update_2021-001
Apple iOS and macOS=10.14.6-security_update_2021-002
Apple iOS and macOS=10.14.6-supplemental_update
Apple iOS and macOS=10.14.6-supplemental_update_2
Apple iOS and macOS=10.15.6
Apple iOS and macOS=10.15.6-supplemental_update
Apple iOS and macOS=10.15.7
Apple iOS and macOS=10.15.7-security_update_2020
Apple iOS and macOS=10.15.7-security_update_2020-001
Apple iOS and macOS=10.15.7-security_update_2020-005
Apple iOS and macOS=10.15.7-security_update_2020-007
Apple iOS and macOS=10.15.7-security_update_2021-001
Apple iOS and macOS=10.15.7-supplemental_update
Apple macOS>=11.0<11.3

Event History

Sep 8, 2021
CVE Published
via MITRE·02:49 PM
Data Sourced
via MITRE·02:49 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 CVE-2021-1876?

CVE-2021-1876 is a vulnerability in NSRemoteView that allows for a use after free issue.

2

What is the severity of CVE-2021-1876?

The severity of CVE-2021-1876 is not mentioned in the provided information.

3

How does CVE-2021-1876 affect Apple Catalina?

Apple Catalina is affected by CVE-2021-1876.

4

How does CVE-2021-1876 affect Apple Mojave?

Apple Mojave is affected by CVE-2021-1876.

5

How does CVE-2021-1876 affect macOS Big Sur?

macOS Big Sur version up to exclusive 11.3 is affected by CVE-2021-1876.

6

How can CVE-2021-1876 be fixed?

To fix CVE-2021-1876, apply the updates provided by Apple.

7

Where can I find more information about CVE-2021-1876?

You can find more information about CVE-2021-1876 on Apple's support website.

Company

Resources

Contact

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