medium
5.5
CWE
416
Advisory Published
Updated

CVE-2020-7463: Use After Free

First published: Fri Mar 26 2021(Updated: )

In FreeBSD 12.1-STABLE before r364644, 11.4-STABLE before r364651, 12.1-RELEASE before p9, 11.4-RELEASE before p3, and 11.3-RELEASE before p13, improper handling in the kernel causes a use-after-free bug by sending large user messages from multiple threads on the same SCTP socket. The use-after-free situation may result in unintended kernel behaviour including a kernel panic.

Credit: Megan2013678 Megan2013678 Megan2013678 Megan2013678 Megan2013678 Megan2013678 Megan2013678 secteam@freebsd.org

Affected SoftwareAffected VersionHow to fix
Apple Safari<14.1
14.1
Apple iTunes for Windows<12.11.3
12.11.3
Apple iCloud for Windows<12.3
12.3
Apple macOS Big Sur<11.3
11.3
Apple tvOS<14.5
14.5
Apple watchOS<7.4
7.4
Apple iOS<14.5
14.5
Apple iPadOS<14.5
14.5
FreeBSD FreeBSD=11.3
FreeBSD FreeBSD=11.3-p1
FreeBSD FreeBSD=11.3-p10
FreeBSD FreeBSD=11.3-p11
FreeBSD FreeBSD=11.3-p12
FreeBSD FreeBSD=11.3-p2
FreeBSD FreeBSD=11.3-p3
FreeBSD FreeBSD=11.3-p4
FreeBSD FreeBSD=11.3-p5
FreeBSD FreeBSD=11.3-p6
FreeBSD FreeBSD=11.3-p7
FreeBSD FreeBSD=11.3-p8
FreeBSD FreeBSD=11.3-p9
FreeBSD FreeBSD=11.4
FreeBSD FreeBSD=11.4-p1
FreeBSD FreeBSD=11.4-p2
FreeBSD FreeBSD=12.1
FreeBSD FreeBSD=12.1-p1
FreeBSD FreeBSD=12.1-p2
FreeBSD FreeBSD=12.1-p3
FreeBSD FreeBSD=12.1-p4
FreeBSD FreeBSD=12.1-p5
FreeBSD FreeBSD=12.1-p6
FreeBSD FreeBSD=12.1-p7
FreeBSD FreeBSD=12.1-p8
FreeBSD FreeBSD=12.2
Apple Icloud Windows<12.3
Apple Itunes Windows<12.11.3
Apple Safari<14.1
Apple iPadOS<14.5
Apple iPhone OS<14.5
Apple macOS>=11.0<11.3
Apple tvOS<14.5
Apple watchOS<7.4

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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-2020-7463?

    CVE-2020-7463 is a use after free vulnerability in WebRTC that has been addressed with improved memory management.

  • What is the impact of CVE-2020-7463?

    CVE-2020-7463 may allow a remote attacker to cause unexpected system termination or corrupt kernel memory.

  • Which software products are affected by CVE-2020-7463?

    The following Apple software products are affected by CVE-2020-7463: Safari 14.1, iOS 14.5, iPadOS 14.5, watchOS 7.4, iTunes for Windows 12.11.3, iCloud for Windows 12.3, macOS Big Sur 11.3, and tvOS 14.5.

  • How can I fix CVE-2020-7463?

    To fix CVE-2020-7463, it is recommended to update your affected Apple software products to the latest versions.

  • Where can I find more information about CVE-2020-7463?

    More information about CVE-2020-7463 can be found in the references provided by Apple: [Reference 1](https://support.apple.com/en-us/HT212321), [Reference 2](https://support.apple.com/en-us/HT212317), [Reference 3](https://support.apple.com/en-us/HT212318).

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