high
8.8
CWE
125
Advisory Published
Updated

CVE-2021-30953

First published: Tue Aug 24 2021(Updated: )

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.

Credit: Jianjun Dai 360 Vulnerability Research Institute via Tianfu CupJianjun Dai 360 Vulnerability Research Institute via Tianfu CupJianjun Dai 360 Vulnerability Research Institute via Tianfu CupJianjun Dai 360 Vulnerability Research Institute via Tianfu CupJianjun Dai 360 Vulnerability Research Institute 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>=12.0.0<=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 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-2021-30953?

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

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

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

  • How does CVE-2021-30953 affect Apple iOS?

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

  • How does CVE-2021-30953 affect Apple iPadOS?

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

  • How does CVE-2021-30953 affect Apple Safari?

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

  • How does CVE-2021-30953 affect Apple watchOS?

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

  • How does CVE-2021-30953 affect Apple tvOS?

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

  • 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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