CVE-2021-30836: Input Validation

Published Sep 13, 2021
·
Updated

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

References: https://webkitgtk.org/security/WSA-2021-0007.html https://www.openwall.com/lists/oss-security/2021/12/20/6

Other sources

An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 14.8 and iPadOS 14.8, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing a maliciously crafted audio file may disclose restricted memory.

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

Credit

Peter Nguyen Vu Hoang(STAR Labs)

Affected Software

20 affected componentsFixes available
Apple Safari<15.0.0
Apple iPadOS<14.8
Apple iPhone OS<14.8
Apple macOS<12.0.1
Apple tvOS<15.0
Apple WatchOS<8.0
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
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

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. Upgrade

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

    Fixed in 8
  3. Upgrade

    Upgrade macOS to a version that resolves this vulnerability.

    Fixed in 12.0.1
  4. Upgrade

    Upgrade Safari to a version that resolves this vulnerability.

    Fixed in 15
  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 Apple iOS and iPadOS to a version that resolves this vulnerability.

    Fixed in 14.8
  8. Upgrade

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

    Fixed in 14.8
  9. Upgrade

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

    Fixed in 2.32.4
  10. Upgrade

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

    Fixed in 2.32.4-r0
  11. Upgrade

    Upgrade WebKitGTK to a version that resolves this vulnerability.

    Patch WSA-2021-0007

Event History

Oct 28, 2021
CVE Published
via MITRE·06:17 PM
Data Sourced
via MITRE·06:17 PM
DescriptionWeakness
Data Sourced
via NVD·07:15 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·07:15 PM
DescriptionSeverityAffected Software
Dec 20, 2021
Data Sourced
via Red Hat·07:13 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-2021-30836?

CVE-2021-30836 is a vulnerability in WebKit where an out-of-bounds read was addressed with improved input validation.

2

Which software is affected by CVE-2021-30836?

CVE-2021-30836 affects the following software versions: Apple watchOS 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

How severe is CVE-2021-30836?

The severity of CVE-2021-30836 is not provided in the information available.

4

How can I fix CVE-2021-30836?

To fix CVE-2021-30836, it is recommended to update the affected software to the versions mentioned in the affected software list.

5

Where can I find more information about CVE-2021-30836?

You can find more information about CVE-2021-30836 on the following references: [link1], [link2], [link3]. [link1] [link2] [link3] These links provide detailed information and guidance on the vulnerability and its remediation.

Company

Resources

Contact

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