CVE-2020-27949: Medium severity Apple macOS Big Sur vulnerability

Published Dec 14, 2020
·
Updated

Kernel. This issue was addressed with improved checks to prevent unauthorized actions.

Other sources

This issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave. A malicious application may cause unexpected changes in memory belonging to processes traced by DTrace.

Credit

Steffen Klee@@_kleest(TU Darmstadt), Secure Mobile Networking Lab

Affected Software

21 affected componentsFixes available
Apple macOS Big Sur<11.1
11.1
Apple Catalina
Apple Mojave
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_2019-001
Apple iOS and macOS=10.14.6-security_update_2019-002
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-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<11.1.0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade Apple macOS to a version that resolves this vulnerability.

    Fixed in 11.1
  2. Upgrade

    Upgrade macOS Big Sur to a version that resolves this vulnerability.

    Fixed in 11.1
  3. Upgrade

    Upgrade macOS Catalina to a version that resolves this vulnerability.

    Patch Security Update 2020-001 Catalina
  4. Upgrade

    Upgrade macOS Mojave to a version that resolves this vulnerability.

    Patch Security Update 2020-007 Mojave

Event History

Dec 14, 2020
Exploit Published
via GitHub·07:39 PM
Apr 2, 2021
CVE Published
via MITRE·05:39 PM
Data Sourced
via MITRE·05:39 PM
DescriptionWeakness

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is CVE-2020-27949?

CVE-2020-27949 is a vulnerability in the Kernel that allows unauthorized actions.

2

Which software versions are affected by CVE-2020-27949?

CVE-2020-27949 affects macOS Big Sur 11.1, Apple Catalina, and Apple Mojave.

3

How was CVE-2020-27949 addressed?

CVE-2020-27949 was addressed with improved checks to prevent unauthorized actions.

4

Where can I find more information about CVE-2020-27949?

You can find more information about CVE-2020-27949 at the following reference: [link](https://support.apple.com/en-us/HT212011)

Company

Resources

Contact

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