CVE-2021-30663: Apple Multiple Products WebKit Integer Overflow Vulnerability

Published May 3, 2021
·
Updated

An integer overflow was addressed with improved input validation.

Other sources

Apple iOS, iPadOS, macOS, tvOS, and Safari WebKit contain an integer overflow vulnerability that leads to code execution when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.

— CISA

Credit

an anonymous researcher

Affected Software

18 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 macOS Big Sur<11.3.1
11.3.1
Apple tvOS<14.6
14.6
Apple Multiple Products
Apple Safari<14.1
14.1
Apple Safari<14.1.1
14.1.1
Apple iOS<12.5.3
12.5.3
Apple iOS<14.5.1
14.5.1
Apple iPadOS<14.5.1
14.5.1
Apple Safari<14.1.1
Apple iPadOS>=14.0<14.5.1
Apple iPhone OS<12.5.3
Apple iPhone OS>=14.0<14.5.1
Apple macOS>=11.0<11.3.1
Apple tvOS<14.6
Apple macOS>=11.0<11.3.1
redhat/webkitgtk<2.32.3
2.32.3

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 Apple macOS to a version that resolves this vulnerability.

    Fixed in 11.3.1
  4. Upgrade

    Upgrade tvOS to a version that resolves this vulnerability.

    Fixed in 14.6
  5. Upgrade

    Upgrade Safari to a version that resolves this vulnerability.

    Fixed in 14.1
  6. Upgrade

    Upgrade Safari to a version that resolves this vulnerability.

    Fixed in 14.1.1
  7. Upgrade

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

    Fixed in 12.5.3
  8. Upgrade

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

    Fixed in 14.5.1
  9. Upgrade

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

    Fixed in 14.5.1
  10. Upgrade

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

    Fixed in 2.32.3
  11. Upgrade

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

    Fixed in 2.36.4-1~deb10u1
  12. Upgrade

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

    Fixed in 2.38.6-0+deb10u1
  13. Upgrade

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

    Fixed in 2.40.5-1~deb11u1
  14. Upgrade

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

    Fixed in 2.42.1-1~deb11u2
  15. Upgrade

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

    Fixed in 2.40.5-1~deb12u1
  16. Upgrade

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

    Fixed in 2.42.1-1~deb12u1
  17. Upgrade

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

    Fixed in 2.42.1-2
  18. Upgrade

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

    Fixed in 2.38.6-1~deb11u1
  19. Upgrade

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

    Fixed in 2.38.6-1
  20. Upgrade

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

    Fixed in 2.42.1-1

Event History

Jul 28, 2021
Data Sourced
via Red Hat·01:37 PM
DescriptionSeverityAffected Software
Sep 8, 2021
CVE Published
via MITRE·02:49 PM
Data Sourced
via MITRE·02:49 PM
DescriptionWeakness
Data Sourced
via NVD·03:15 PM
DescriptionSeverityWeaknessAffected Software
Nov 3, 2021
Known Exploited
via CISA·12:00 AM

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is the vulnerability ID for this Apple product vulnerability?

The vulnerability ID for this Apple product vulnerability is CVE-2021-30663.

2

Which Apple products are affected by this vulnerability?

Apple iOS, iPadOS, macOS, tvOS, and Safari WebKit are affected by this vulnerability.

3

What is the severity of CVE-2021-30663?

The severity of CVE-2021-30663 is not specified in the provided information.

4

How can the CVE-2021-30663 vulnerability be exploited?

The CVE-2021-30663 vulnerability can be exploited by processing maliciously crafted web content.

5

How can I fix the CVE-2021-30663 vulnerability?

To fix the CVE-2021-30663 vulnerability, update to the recommended version provided by Apple.

Company

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