high
7.5
CWE
401
Advisory Published
CVE Published
Updated

CVE-2021-30844

First published: Mon Sep 13 2021(Updated: )

A logic issue was addressed with improved state management. This issue is fixed in Security Update 2021-005 Catalina, macOS Big Sur 11.6. A remote attacker may be able to leak memory.

Credit: Peter Nguyen Vu Hoang STAR LabsPeter Nguyen Vu Hoang STAR Labs product-security@apple.com Peter Nguyen Vu Hoang STAR LabsPeter Nguyen Vu Hoang STAR Labs

Affected SoftwareAffected VersionHow to fix
Apple Catalina
Apple macOS Big Sur<11.6
11.6
Apple macOS Big Sur<11.6.1
11.6.1
Apple Mac OS X>=10.15<=10.15.6
Apple Mac OS X=10.15.7
Apple Mac OS X=10.15.7-security_update_2020
Apple Mac OS X=10.15.7-security_update_2020-001
Apple Mac OS X=10.15.7-security_update_2020-005
Apple Mac OS X=10.15.7-security_update_2020-007
Apple Mac OS X=10.15.7-security_update_2021-001
Apple Mac OS X=10.15.7-security_update_2021-002
Apple Mac OS X=10.15.7-security_update_2021-003
Apple Mac OS X=10.15.7-security_update_2021-006
Apple Mac OS X=10.15.7-supplemental_update
Apple macOS<11.6.1

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is CVE-2021-30844?

    CVE-2021-30844 is a vulnerability related to SMB and involves a logic issue that has been addressed with improved state management.

  • Which software versions are affected by CVE-2021-30844?

    macOS Big Sur versions 11.6 and earlier, including 11.6.1, and macOS Catalina are affected by CVE-2021-30844.

  • How can I fix CVE-2021-30844?

    To fix CVE-2021-30844, update your macOS Big Sur to version 11.6.1 or update to a newer version if available.

  • Where can I find more information about CVE-2021-30844?

    You can find more information about CVE-2021-30844 on the Apple Support website. Here are some references: [Link 1](https://support.apple.com/en-us/HT212871), [Link 2](https://support.apple.com/en-us/HT212872), [Link 3](https://support.apple.com/en-us/HT212804).

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