critical
9.3
CWE
416
Advisory Published
CVE Published
Updated

CVE-2020-27917: Use After Free

First published: Thu Nov 05 2020(Updated: )

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.1, iOS 14.2 and iPadOS 14.2, iCloud for Windows 11.5, tvOS 14.2, iTunes 12.11 for Windows. Processing maliciously crafted web content may lead to code execution.

Credit: found by OSS-Fuzz found by OSS-Fuzz found by OSS-Fuzz found by OSS-Fuzz found by OSS-Fuzz found by OSS-Fuzz found by OSS-Fuzz found by OSS-Fuzz found by OSS-Fuzz found by OSS-Fuzz product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple iTunes for Windows<12.11
12.11
Apple iCloud for Windows<11.5
11.5
Apple macOS Big Sur<11.0.1
11.0.1
Apple watchOS<7.1
7.1
Apple tvOS<14.2
14.2
Apple iOS<14.2
14.2
Apple iPadOS<14.2
14.2
Apple Icloud Windows<11.5
Apple Itunes Windows<12.11
Apple iPadOS<14.2
Apple iPhone OS<14.2
Apple macOS>=11.0<11.0.1
Apple tvOS<14.2
Apple watchOS<7.1

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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-2020-27917?

    CVE-2020-27917 is a use after free vulnerability in libxml2 library.

  • What is the severity of CVE-2020-27917?

    The severity of CVE-2020-27917 is not mentioned.

  • How can CVE-2020-27917 be exploited?

    CVE-2020-27917 can be exploited by an attacker to execute arbitrary code or cause a denial-of-service condition.

  • Is there a fix for CVE-2020-27917?

    Yes, a fix for CVE-2020-27917 has been provided by Apple.

  • Where can I find more information about CVE-2020-27917?

    You can find more information about CVE-2020-27917 on the Apple support website.

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