critical
9.3
CWE
843
Advisory Published
Updated

CVE-2021-30954

First published: Tue Aug 24 2021(Updated: )

A type confusion issue was addressed with improved memory handling. 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.

Credit: Kunlun Lab via Tianfu Cup Kunlun Lab via Tianfu Cup Kunlun Lab Kunlun Lab via Tianfu Cup Kunlun Lab via Tianfu Cup Kunlun Lab via Tianfu Cup cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Apple Safari<15.2
Apple iPadOS<15.2
Apple iPhone OS<15.2
Apple macOS>=12.0<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
debian/webkit2gtk
2.36.4-1~deb10u1
2.38.6-0+deb10u1
2.40.5-1~deb11u1
2.42.1-1~deb11u2
2.40.5-1~deb12u1
2.42.1-1~deb12u1
2.42.1-2
debian/wpewebkit
2.38.6-1~deb11u1
2.38.6-1
2.42.1-1
Apple tvOS<15.2
15.2
Apple Safari<15.2
15.2
Apple watchOS<8.3
8.3
Apple iOS<15.2
15.2
Apple iPadOS<15.2
15.2
Apple macOS Monterey<12.1
12.1

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID?

    The vulnerability ID is CVE-2021-30954.

  • What is the title of the vulnerability?

    The title of the vulnerability is WebKit. A type confusion issue was addressed with improved memory handling.

  • What software is affected by this vulnerability?

    The affected software includes Apple macOS Monterey 12.1, Apple iOS up to version 15.2, Apple iPadOS up to version 15.2, Apple Safari up to version 15.2, Apple watchOS up to version 8.3, and Apple tvOS up to version 15.2.

  • How severe is CVE-2021-30954?

    The severity of CVE-2021-30954 has not been specified.

  • How can I fix CVE-2021-30954?

    To fix CVE-2021-30954, update your software to the latest available version provided by Apple.

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