critical
9.3
CWE
119 120
Advisory Published
Updated

CVE-2021-30934: Buffer Overflow

First published: Tue Aug 24 2021(Updated: )

A buffer overflow 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: Dani Biro Dani Biro Dani Biro Dani Biro Dani Biro cve@mitre.org

Affected SoftwareAffected VersionHow to fix
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 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
Fedoraproject Fedora=35
Debian Debian Linux=10.0
Debian Debian Linux=11.0
Apple Safari<15.2
15.2
Apple watchOS<8.3
8.3
Apple tvOS<15.2
15.2
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 CVE-2021-30934?

    CVE-2021-30934 is a buffer overflow vulnerability in WebKit that has been addressed with improved memory handling.

  • Which software is affected by CVE-2021-30934?

    CVE-2021-30934 affects Apple macOS Monterey version up to 12.1, Apple iOS version up to 15.2, Apple iPadOS version up to 15.2, Apple Safari version up to 15.2, Apple watchOS version up to 8.3, and Apple tvOS version up to 15.2.

  • How can I fix the CVE-2021-30934 vulnerability?

    To fix the CVE-2021-30934 vulnerability, make sure to update affected software to the specified remediation versions.

  • Where can I find more information about CVE-2021-30934?

    You can find more information about CVE-2021-30934 on the Apple support page.

  • What is the Common Weakness Enumeration (CWE) ID associated with CVE-2021-30934?

    The Common Weakness Enumeration (CWE) ID associated with CVE-2021-30934 is CWE-119.

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