CVE-2020-27911: Input Validation

Published Nov 5, 2020
·
Updated

libxml2. An integer overflow was addressed through improved input validation.

Other sources

An integer overflow was addressed through improved input validation. 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. A remote attacker may be able to cause unexpected application termination or arbitrary 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

Affected Software

17 affected componentsFixes available
Apple macOS Big Sur<11.0.1
11.0.1
Apple tvOS<14.2
14.2
Apple macOS Big Sur<11.1
11.1
Apple Catalina
Apple Mojave
Apple WatchOS<7.1
7.1
Apple iCloud for Windows<11.5
11.5
Apple iTunes for Windows<12.11
12.11
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

Event History

Dec 8, 2020
CVE Published
via MITRE·08:10 PM
Data Sourced
via MITRE·08:10 PM
DescriptionWeakness

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 CVE-2020-27911?

CVE-2020-27911 is a vulnerability in libxml2 that allows for integer overflow through improved input validation.

2

Which software versions are affected by CVE-2020-27911?

CVE-2020-27911 affects Apple iOS up to version 14.2, Apple iPadOS up to version 14.2, Apple tvOS up to version 14.2, Apple iCloud for Windows up to version 11.5, Apple iTunes for Windows up to version 12.11, Apple macOS Big Sur up to version 11.0.1, Apple watchOS up to version 7.1, Apple macOS Big Sur up to version 11.1, Apple Catalina, and Apple Mojave.

3

How can I fix CVE-2020-27911 vulnerability?

To fix CVE-2020-27911, Apple users should update their software to the latest version available.

4

Where can I find more information about CVE-2020-27911?

You can find more information about CVE-2020-27911 on the official Apple support page: [link](https://support.apple.com/en-us/HT211929) [link](https://support.apple.com/en-us/HT211933) [link](https://support.apple.com/en-us/HT211930)

5

What are the Common Weakness Enumerations (CWE) associated with CVE-2020-27911?

The CWEs associated with CVE-2020-27911 are CWE-20 (Improper Input Validation) and CWE-190 (Integer Overflow or Wraparound).

Company

Resources

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