CVE-2021-30846: High severity Apple tvOS vulnerability

Published Sep 13, 2021
·
Updated

A flaw was found in WebKitGTK. Processing maliciously crafted web content may lead to arbitrary 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, tvOS 15, iOS 15 and iPadOS 15, watchOS 8. Processing maliciously crafted web content may lead to arbitrary code execution.

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

Credit

Sergei Glazunov(Google Project Zero)

Affected Software

27 affected componentsFixes available
debian/webkit2gtk
2.36.4-1~deb10u12.38.6-0+deb10u12.40.5-1~deb11u12.42.1-1~deb11u22.40.5-1~deb12u12.42.1-1~deb12u12.42.1-2
debian/wpewebkit
2.38.6-1~deb11u12.38.6-12.42.1-1
Apple tvOS<15
15
Apple WatchOS<8
8
Apple macOS Monterey<12.0.1
12.0.1
Apple Safari<15
15
Apple iOS<15
15
Apple iPadOS<15
15
Apple iOS<14.8
14.8
Apple iPadOS<14.8
14.8
Apple Safari<15.0
Apple iPadOS<14.8
Apple iPhone OS<14.8
Apple macOS<12.0.1
Apple tvOS<15.0
Apple WatchOS<8.0
Debian Debian Linux=10.0
Debian Debian Linux=11.0
Fedoraproject Fedora=33
Fedoraproject Fedora=34
redhat/webkitgtk<2.34.0
2.34.0
alpine/webkit2gtk<2.34.0-r0
2.34.0-r0
alpine/webkit2gtk<2.34.0-r0
2.34.0-r0
alpine/webkit2gtk<2.34.0-r0
2.34.0-r0
alpine/webkit2gtk<2.34.0-r0
2.34.0-r0
alpine/webkit2gtk<2.34.0-r0
2.34.0-r0
alpine/webkit2gtk<2.34.0-r0
2.34.0-r0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 2.36.4-1~deb10u1Fixed in 2.38.6-0+deb10u1Fixed in 2.40.5-1~deb11u1Fixed in 2.42.1-1~deb11u2Fixed in 2.40.5-1~deb12u1Fixed in 2.42.1-1~deb12u1Fixed in 2.42.1-2
  2. Upgrade

    Upgrade debian/wpewebkit to a version that resolves this vulnerability.

    Fixed in 2.38.6-1~deb11u1Fixed in 2.38.6-1Fixed in 2.42.1-1
  3. Upgrade

    Upgrade tvOS to a version that resolves this vulnerability.

    Fixed in 15
  4. Upgrade

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

    Fixed in 8
  5. Upgrade

    Upgrade macOS to a version that resolves this vulnerability.

    Fixed in 12.0.1
  6. Upgrade

    Upgrade Safari to a version that resolves this vulnerability.

    Fixed in 15
  7. Upgrade

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

    Fixed in 15
  8. Upgrade

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

    Fixed in 15
  9. Upgrade

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

    Fixed in 14.8
  10. Upgrade

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

    Fixed in 14.8
  11. Upgrade

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

    Fixed in 2.34.0
  12. Upgrade

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

    Fixed in 2.34.0-r0
  13. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 14.8
  14. Upgrade

    Upgrade iPadOS to a version that resolves this vulnerability.

    Fixed in 14.8
  15. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 15
  16. Upgrade

    Upgrade iPadOS to a version that resolves this vulnerability.

    Fixed in 15
  17. Upgrade

    Upgrade watchOS to a version that resolves this vulnerability.

    Fixed in 8

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·04:40 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 the vulnerability ID for this memory corruption issue in WebKit?

The vulnerability ID is CVE-2021-30846.

2

What software versions are affected by CVE-2021-30846?

The affected software versions include Apple watchOS up to version 8, Apple iOS up to version 15, Apple iPadOS up to version 15, Apple iOS up to version 14.8, Apple iPadOS up to version 14.8, Apple tvOS up to version 15, Apple Safari up to version 15, and Apple macOS Monterey up to version 12.0.1.

3

What is the severity of CVE-2021-30846?

The severity of CVE-2021-30846 has not been disclosed.

4

How can I fix the vulnerability CVE-2021-30846?

To fix the vulnerability, it is recommended to update your software to the latest version provided by Apple. Please refer to the Apple support links provided for more information on the available updates.

5

Where can I find more information about CVE-2021-30846?

You can find more information about CVE-2021-30846 on the Apple support pages. Please refer to the provided reference links.

Company

Resources

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