CVE-2020-27950: Apple Multiple Products Memory Initialization Vulnerability

Published Nov 5, 2020
·
Updated

A memory initialization issue was addressed. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.1, iOS 12.4.9, watchOS 6.2.9, Security Update 2020-006 High Sierra, Security Update 2020-006 Mojave, iOS 14.2 and iPadOS 14.2, watchOS 5.3.9, macOS Catalina 10.15.7 Supplemental Update, macOS Catalina 10.15.7 Update. A malicious application may be able to disclose kernel memory.

Other sources

Apple iOS, iPadOS, macOS, and watchOS contain a memory initialization vulnerability that may allow a malicious application to disclose kernel memory.

— CISA

Kernel. A memory initialization issue was addressed.

Credit

Google Project Zero

Affected Software

20 affected componentsFixes available
Apple Multiple Products
Apple macOS Big Sur<11.0.1
11.0.1
Apple High Sierra
Apple Mojave
Apple WatchOS<5.3.9
5.3.9
Apple WatchOS<6.2.9
6.2.9
Apple WatchOS<7.1
7.1
Apple macOS Catalina Supplemental Update<10.15.7
10.15.7
Apple macOS Catalina Update<10.15.7
10.15.7
Apple iOS<12.4.9
12.4.9
Apple iOS<14.2
14.2
Apple iPadOS<14.2
14.2
Apple iPadOS<14.2
Apple iPhone OS<12.4.9
Apple iPhone OS>=14.0<14.2
Apple macOS<10.15.7
Apple macOS>=11.0<11.0.1
Apple WatchOS<5.3.9
Apple WatchOS>=6.0<6.2.9
Apple WatchOS>=7.0<7.1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade Apple macOS to a version that resolves this vulnerability.

    Fixed in 11.0.1
  2. Upgrade

    Upgrade Apple iOS, iPadOS, and watchOS to a version that resolves this vulnerability.

    Fixed in 5.3.9
  3. Upgrade

    Upgrade Apple iOS, iPadOS, and watchOS to a version that resolves this vulnerability.

    Fixed in 6.2.9
  4. Upgrade

    Upgrade Apple iOS, iPadOS, and watchOS to a version that resolves this vulnerability.

    Fixed in 7.1
  5. Upgrade

    Upgrade Apple macOS Supplemental Update to a version that resolves this vulnerability.

    Fixed in 10.15.7
  6. Upgrade

    Upgrade Apple macOS Catalina Update to a version that resolves this vulnerability.

    Fixed in 10.15.7
  7. Upgrade

    Upgrade Apple iOS and iPadOS to a version that resolves this vulnerability.

    Fixed in 12.4.9
  8. Upgrade

    Upgrade Apple iOS and iPadOS to a version that resolves this vulnerability.

    Fixed in 14.2
  9. Upgrade

    Upgrade Apple iOS, iPadOS, and macOS to a version that resolves this vulnerability.

    Fixed in 14.2
  10. Upgrade

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

    Fixed in 11.0.1
  11. Upgrade

    Upgrade watchOS to a version that resolves this vulnerability.

    Fixed in 7.1
  12. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 12.4.9
  13. Upgrade

    Upgrade watchOS to a version that resolves this vulnerability.

    Fixed in 6.2.9
  14. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Patch Security Update 2020-006 High Sierra
  15. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Patch Security Update 2020-006 Mojave
  16. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 14.2
  17. Upgrade

    Upgrade iPadOS to a version that resolves this vulnerability.

    Fixed in 14.2
  18. Upgrade

    Upgrade watchOS to a version that resolves this vulnerability.

    Fixed in 5.3.9
  19. Upgrade

    Upgrade macOS Catalina (Supplemental Update) to a version that resolves this vulnerability.

    Fixed in 10.15.7
  20. Upgrade

    Upgrade macOS Catalina (Update) to a version that resolves this vulnerability.

    Fixed in 10.15.7

Event History

Dec 8, 2020
CVE Published
via MITRE·08:17 PM
Data Sourced
via MITRE·08:17 PM
DescriptionWeakness
Data Sourced
via NVD·09:15 PM
DescriptionSeverityWeaknessAffected Software
Nov 3, 2021
Known Exploited
via CISA·12:00 AM

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?

The vulnerability ID is CVE-2020-27950.

2

Which products are affected by CVE-2020-27950?

Apple iOS, iPadOS, macOS, and watchOS are affected by CVE-2020-27950.

3

What is the impact of CVE-2020-27950?

CVE-2020-27950 may allow a malicious application to disclose kernel memory.

4

Which versions of iOS are affected by CVE-2020-27950?

iOS versions up to and exclusive of 12.4.9 and versions up to and exclusive of 14.2 are affected by CVE-2020-27950.

5

Which versions of watchOS are affected by CVE-2020-27950?

watchOS versions up to and exclusive of 6.2.9 and versions up to and exclusive of 5.3.9 are affected by CVE-2020-27950.

6

Which versions of macOS are affected by CVE-2020-27950?

macOS Catalina Supplemental Update up to and exclusive of 10.15.7, macOS Catalina Update up to and exclusive of 10.15.7, and macOS Big Sur up to and exclusive of 11.0.1 are affected by CVE-2020-27950.

7

Where can I find more information about CVE-2020-27950?

You can find more information about CVE-2020-27950 on the Apple support website: [link1], [link2], [link3].

Company

Resources

Contact

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