CVE-2020-9951: Use After Free

Published Sep 16, 2020
·
Updated

A flaw was found in WebKitGTK. An use after free issue was addressed with improved memory management. Processing maliciously crafted web content may lead to arbitrary code execution.

Reference: https://webkitgtk.org/security/WSA-2020-0008.html

Other sources

A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.0. Processing maliciously crafted web content may lead to arbitrary code execution.

— Launchpad

Apple Safari could allow a remote attacker to execute arbitrary code on the system, caused by a use-after-free in the WebKit component. By persuading a victim to visit a specially-crafted Web site, a remote attacker could exploit this vulnerability to execute arbitrary code on the system.

— IBM

WebKit. A use after free issue was addressed with improved memory management.

Credit

cc(Trend Micro Zero Day Initiative), Marcin 'Icewall' Noga(Cisco Talos), an anonymous researcher

Affected Software

30 affected componentsFixes available
debian/webkit2gtk
2.44.2-1~deb11u12.44.3-1~deb11u12.44.2-1~deb12u12.44.3-1~deb12u12.44.3-12.44.4-1
debian/wpewebkit
2.38.6-1~deb11u12.38.6-12.44.3-12.44.4-1
Apple tvOS<14.0
14.0
Apple WatchOS<7.0
7.0
Apple iCloud for Windows<11.5
11.5
IBM Cloud Pak for Security (CP4S)<=1.7.2.0
IBM Cloud Pak for Security (CP4S)<=1.7.1.0
IBM Cloud Pak for Security (CP4S)<=1.7.0.0
Apple iTunes for Windows<12.10.9
12.10.9
Apple Safari<14.0
14.0
Apple iOS<14.0
14.0
Apple iPadOS<14.0
14.0
Apple Icloud Windows<11.5
Apple Itunes Windows<12.10.9
Apple Safari<14.0
Apple iPadOS<14.0
Apple iPhone OS<14.0
Apple tvOS<14.0
Apple WatchOS<7.0
WebKit Webkitgtk\+<=2.30.3
Debian Debian Linux=10.0
redhat/webkitgtk<2.30.0
2.30.0
alpine/webkit2gtk<2.30.0-r0
2.30.0-r0
alpine/webkit2gtk<2.30.0-r0
2.30.0-r0
alpine/webkit2gtk<2.30.0-r0
2.30.0-r0
alpine/webkit2gtk<2.30.0-r0
2.30.0-r0
alpine/webkit2gtk<2.30.0-r0
2.30.0-r0
alpine/webkit2gtk<2.30.0-r0
2.30.0-r0
alpine/webkit2gtk<2.30.0-r0
2.30.0-r0
alpine/webkit2gtk<2.30.0-r0
2.30.0-r0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/webkit2gtk to a version that resolves this vulnerability.

    Fixed in 2.44.2-1~deb11u1Fixed in 2.44.3-1~deb11u1Fixed in 2.44.2-1~deb12u1Fixed in 2.44.3-1~deb12u1Fixed in 2.44.3-1Fixed in 2.44.4-1
  2. Upgrade

    Upgrade debian/wpewebkit to a version that resolves this vulnerability.

    Fixed in 2.38.6-1~deb11u1Fixed in 2.38.6-1Fixed in 2.44.3-1Fixed in 2.44.4-1
  3. Upgrade

    Upgrade tvOS to a version that resolves this vulnerability.

    Fixed in 14.0
  4. Upgrade

    Upgrade Apple iOS, iPadOS, and watchOS to a version that resolves this vulnerability.

    Fixed in 7.0
  5. Upgrade

    Upgrade Apple iCloud to a version that resolves this vulnerability.

    Fixed in 11.5
  6. Upgrade

    Upgrade iTunes to a version that resolves this vulnerability.

    Fixed in 12.10.9
  7. Upgrade

    Upgrade Safari to a version that resolves this vulnerability.

    Fixed in 14.0
  8. Upgrade

    Upgrade Apple iOS and iPadOS to a version that resolves this vulnerability.

    Fixed in 14.0
  9. Upgrade

    Upgrade Apple iOS, iPadOS, and macOS to a version that resolves this vulnerability.

    Fixed in 14.0
  10. Upgrade

    Upgrade redhat/webkitgtk to a version that resolves this vulnerability.

    Fixed in 2.30.0
  11. Upgrade

    Upgrade alpine/webkit2gtk to a version that resolves this vulnerability.

    Fixed in 2.30.0-r0

Event History

Oct 16, 2020
CVE Published
via MITRE·04:53 PM
Data Sourced
via MITRE·04:53 PM
DescriptionWeakness
Data Sourced
via NVD·05:15 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·05:15 PM
DescriptionSeverityAffected Software
Nov 24, 2020
Data Sourced
via Red Hat·06:29 PM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is CVE-2020-9951?

CVE-2020-9951 is a vulnerability in WebKit that allows for a use after free issue.

2

Which software is affected by CVE-2020-9951?

CVE-2020-9951 affects Apple iTunes for Windows (up to version 12.10.9), Apple iCloud for Windows (up to version 11.5), Apple watchOS (up to version 7.0), Apple iOS (up to version 14.0), Apple iPadOS (up to version 14.0), Apple Safari (up to version 14.0), and Apple tvOS (up to version 14.0).

3

How can I fix CVE-2020-9951?

To fix CVE-2020-9951, make sure to update your affected software to the recommended versions provided by Apple.

4

Where can I find more information about CVE-2020-9951?

You can find more information about CVE-2020-9951 on the official Apple support page.

5

What is the severity of CVE-2020-9951?

The severity of CVE-2020-9951 is not specified.

Company

Resources

Contact

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