CVE-2021-30953: High severity Apple tvOS vulnerability

Published Aug 24, 2021
·
Updated

A flaw was found in WebKitGTK. An out-of-bounds read was addressed with improved bounds checking.

Reference: https://webkitgtk.org/security/WSA-2022-0001.html

Other sources

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in tvOS 15.2, macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted web content may lead to arbitrary code execution.

WebKit. An out-of-bounds read was addressed with improved bounds checking.

Credit

Jianjun Dai(360 Vulnerability Research Institute via Tianfu Cup)

Affected Software

24 affected componentsFixes available
Apple tvOS<15.2
15.2
Apple WatchOS<8.3
8.3
Apple macOS Monterey<12.1
12.1
Apple Safari<15.2
15.2
Apple iOS<15.2
15.2
Apple iPadOS<15.2
15.2
Apple Safari<15.2
Apple iPadOS<15.2
Apple iPhone OS<15.2
Apple macOS>=12.0.0<=12.1
Apple tvOS<15.2
Apple WatchOS<8.3
Fedoraproject Fedora=34
Debian Debian Linux=10.0
Debian Debian Linux=11.0
Fedoraproject Fedora=35
redhat/webkitgtk<2.32.4
2.32.4
debian/webkit2gtk
2.50.6-1~deb12u22.50.6-1~deb12u12.52.6-1~deb13u12.54.0-1~deb13u32.52.6-12.54.2-2
debian/wpewebkit
2.38.6-12.48.3-12.54.2-1
alpine/webkit2gtk<2.34.4-r0
2.34.4-r0
alpine/webkit2gtk<2.34.4-r0
2.34.4-r0
alpine/webkit2gtk<2.34.4-r0
2.34.4-r0
alpine/webkit2gtk<2.34.4-r0
2.34.4-r0
alpine/webkit2gtk<2.34.4-r0
2.34.4-r0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade tvOS to a version that resolves this vulnerability.

    Fixed in 15.2
  2. Upgrade

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

    Fixed in 8.3
  3. Upgrade

    Upgrade macOS to a version that resolves this vulnerability.

    Fixed in 12.1
  4. Upgrade

    Upgrade Safari to a version that resolves this vulnerability.

    Fixed in 15.2
  5. Upgrade

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

    Fixed in 15.2
  6. Upgrade

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

    Fixed in 15.2
  7. Upgrade

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

    Fixed in 2.32.4
  8. Upgrade

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

    Fixed in 2.50.6-1~deb12u2Fixed in 2.50.6-1~deb12u1Fixed in 2.52.6-1~deb13u1Fixed in 2.54.0-1~deb13u3Fixed in 2.52.6-1Fixed in 2.54.2-2
  9. Upgrade

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

    Fixed in 2.38.6-1Fixed in 2.48.3-1Fixed in 2.54.2-1
  10. Upgrade

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

    Fixed in 2.34.4-r0
  11. Upgrade

    Upgrade macOS Monterey to a version that resolves this vulnerability.

    Fixed in 12.1
  12. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 15.2
  13. Upgrade

    Upgrade iPadOS to a version that resolves this vulnerability.

    Fixed in 15.2
  14. Upgrade

    Upgrade watchOS to a version that resolves this vulnerability.

    Fixed in 8.3

Event History

Aug 24, 2021
CVE Published
via MITRE·06:50 PM
Data Sourced
via MITRE·06:50 PM
DescriptionWeakness
Data Sourced
via NVD·07:15 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·07:15 PM
DescriptionSeverityAffected Software
Jan 24, 2022
Data Sourced
via Red Hat·06:13 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-2021-30953?

CVE-2021-30953 is a vulnerability in WebKit that allows an out-of-bounds read.

2

How does CVE-2021-30953 affect Apple macOS Monterey?

CVE-2021-30953 affects Apple macOS Monterey up to version 12.1.

3

How does CVE-2021-30953 affect Apple iOS?

CVE-2021-30953 affects Apple iOS up to version 15.2.

4

How does CVE-2021-30953 affect Apple iPadOS?

CVE-2021-30953 affects Apple iPadOS up to version 15.2.

5

How does CVE-2021-30953 affect Apple Safari?

CVE-2021-30953 affects Apple Safari up to version 15.2.

6

How does CVE-2021-30953 affect Apple watchOS?

CVE-2021-30953 affects Apple watchOS up to version 8.3.

7

How does CVE-2021-30953 affect Apple tvOS?

CVE-2021-30953 affects Apple tvOS up to version 15.2.

8

Are there any official references for CVE-2021-30953?

Yes, you can find official references for CVE-2021-30953 at the following links: [Link 1](https://support.apple.com/en-us/HT212980), [Link 2](https://support.apple.com/en-us/HT212978), [Link 3](https://support.apple.com/en-us/HT212975).

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