CVE-2021-30848: High severity Apple macOS Monterey vulnerability

Published Sep 13, 2021
·
Updated

A flaw was found in WebKitGTK. Processing maliciously crafted web content may lead to code execution.

References: https://webkitgtk.org/security/WSA-2021-0006.html https://www.openwall.com/lists/oss-security/2021/10/26/9

Other sources

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 14.8 and iPadOS 14.8, Safari 15, iOS 15 and iPadOS 15. Processing maliciously crafted web content may lead to code execution.

— MITRE

WebKit. A memory corruption issue was addressed with improved memory handling.

Credit

Sergei Glazunov(Google Project Zero)

Affected Software

17 affected componentsFixes available
Apple macOS Monterey<12.0.1
12.0.1
Apple Safari<15
15
Apple iOS<14.8
14.8
Apple iPadOS<14.8
14.8
Apple iOS<15
15
Apple iPadOS<15
15
Apple Safari<15.0
Apple iPadOS<14.8
Apple iPhone OS<14.8
Apple macOS<12.0.1
redhat/webkitgtk<2.32.4
2.32.4
alpine/webkit2gtk<2.32.4-r0
2.32.4-r0
alpine/webkit2gtk<2.32.4-r0
2.32.4-r0
alpine/webkit2gtk<2.32.4-r0
2.32.4-r0
alpine/webkit2gtk<2.32.4-r0
2.32.4-r0
alpine/webkit2gtk<2.32.4-r0
2.32.4-r0
alpine/webkit2gtk<2.32.4-r0
2.32.4-r0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade macOS to a version that resolves this vulnerability.

    Fixed in 12.0.1
  2. Upgrade

    Upgrade Safari to a version that resolves this vulnerability.

    Fixed in 15
  3. Upgrade

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

    Fixed in 14.8
  4. Upgrade

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

    Fixed in 14.8
  5. Upgrade

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

    Fixed in 15
  6. Upgrade

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

    Fixed in 15
  7. Upgrade

    Upgrade redhat/webkitgtk to a version that resolves this vulnerability.

    Fixed in 2.32.4
  8. Upgrade

    Upgrade alpine/webkit2gtk to a version that resolves this vulnerability.

    Fixed in 2.32.4-r0
  9. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 14.8
  10. Upgrade

    Upgrade iPadOS to a version that resolves this vulnerability.

    Fixed in 14.8
  11. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 15
  12. Upgrade

    Upgrade iPadOS to a version that resolves this vulnerability.

    Fixed in 15

Event History

Oct 19, 2021
CVE Published
via MITRE·01:11 PM
Data Sourced
via MITRE·01:11 PM
DescriptionWeakness
Data Sourced
via NVD·02:15 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·02:15 PM
DescriptionSeverityAffected Software
Oct 27, 2021
Data Sourced
via Red Hat·04:43 PM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is CVE-2021-30848?

CVE-2021-30848 is a memory corruption issue in WebKit that was addressed with improved memory handling.

2

Which software is affected by CVE-2021-30848?

CVE-2021-30848 affects Apple iOS versions up to but excluding 15, Apple iPadOS versions up to but excluding 15, Apple iOS versions up to but excluding 14.8, Apple iPadOS versions up to but excluding 14.8, Apple Safari versions up to but excluding 15, and Apple macOS Monterey versions up to but excluding 12.0.1.

3

How can I fix CVE-2021-30848?

To fix CVE-2021-30848, Apple recommends updating to the latest available software versions. Please refer to the vendor's security advisory for specific instructions.

4

Where can I find more information about CVE-2021-30848?

You can find more information about CVE-2021-30848 in the following references provided by Apple: [Reference 1](https://support.apple.com/en-us/HT212814), [Reference 2](https://support.apple.com/en-us/HT212807), [Reference 3](https://support.apple.com/en-us/HT212869).

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