CVE-2020-9893 - webkitgtk: Use-after-free may lead to application termination or arbitrary code execution

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HIGH

webkitgtk: Use-after-free may lead to application termination or arbitrary code execution

Published Oct 16, 2020

8.8

HIGH

CVSS 3.1

EPSS 2.95%

Description

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 13.6 and iPadOS 13.6, tvOS 13.4.8, watchOS 6.2.8, Safari 13.1.2, iTunes 12.10.8 for Windows, iCloud for Windows 11.3, iCloud for Windows 7.20. A remote attacker may be able to cause unexpected application termination or arbitrary code execution.

Affected products

Vendor Apple Product Safari Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <Safari 13.1.2
Vendor Apple Product iCloud for Windows Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iCloud for Windows 11.3
Vendor Apple Product iCloud for Windows (Legacy) Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iCloud for Windows 7.20
Vendor Apple Product iOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iOS 13.6 and iPadOS 13.6
Vendor Apple Product iTunes for Windows Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <iTunes 12.10.8 for Windows
Vendor Apple Product tvOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <tvOS 13.4.8
Vendor Apple Product watchOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <watchOS 6.2.8

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Apple

Safari

n/a

Version	Status	Constraints
unspecified	affected	<Safari 13.1.2

Apple

iCloud for Windows

n/a

Version	Status	Constraints
unspecified	affected	<iCloud for Windows 11.3

Apple

iCloud for Windows (Legacy)

n/a

Version	Status	Constraints
unspecified	affected	<iCloud for Windows 7.20

Apple

iOS

n/a

Version	Status	Constraints
unspecified	affected	<iOS 13.6 and iPadOS 13.6

Apple

iTunes for Windows

n/a

Version	Status	Constraints
unspecified	affected	<iTunes 12.10.8 for Windows

Apple

tvOS

n/a

Version	Status	Constraints
unspecified	affected	<tvOS 13.4.8

Apple

watchOS

n/a

Version	Status	Constraints
unspecified	affected	<watchOS 6.2.8

Red Hat Enterprise Linux 7 Extended Lifecycle Support

webkitgtk4-0:2.48.3-2.el7_9

Fixed · RHSA-2025:10364
Red Hat Enterprise Linux 8

webkit2gtk3-0:2.28.4-1.el8

Fixed · RHSA-2020:4451
Red Hat Enterprise Linux 6

webkitgtk

Out of support scope
Red Hat Enterprise Linux 7

webkitgtk3

Will not fix

Product	Package	State	Advisory
Red Hat Enterprise Linux 7 Extended Lifecycle Support	webkitgtk4-0:2.48.3-2.el7_9	Fixed	RHSA-2025:10364
Red Hat Enterprise Linux 8	webkit2gtk3-0:2.28.4-1.el8	Fixed	RHSA-2020:4451
Red Hat Enterprise Linux 6	webkitgtk	Out of support scope	n/a
Red Hat Enterprise Linux 7	webkitgtk3	Will not fix	n/a

Remediation

No remediation recorded yet.

Weaknesses (2)

CWE-416

Use After Free

CWE-825

References (13)

https://access.redhat.com/security/cve/CVE-2020-9893
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1879535
Issue Tracking
https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-30672
Advisory
https://nvd.nist.gov/vuln/detail/CVE-2020-9893
https://support.apple.com/HT211288
x_refsource_MISCVendor Advisory
https://support.apple.com/HT211290
x_refsource_MISCVendor Advisory
https://support.apple.com/HT211291
x_refsource_MISCVendor Advisory
https://support.apple.com/HT211292
x_refsource_MISCVendor Advisory
https://support.apple.com/HT211293
x_refsource_MISCVendor Advisory
https://support.apple.com/HT211294
x_refsource_MISCVendor Advisory
https://support.apple.com/HT211295
x_refsource_MISCVendor Advisory
https://webkitgtk.org/security/WSA-2020-0007.html
https://www.cve.org/CVERecord?id=CVE-2020-9893

Link	Providers	Tags
https://access.redhat.com/security/cve/CVE-2020-9893		Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1879535		Issue Tracking
https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-30672		Advisory
https://nvd.nist.gov/vuln/detail/CVE-2020-9893
https://support.apple.com/HT211288		x_refsource_MISCVendor Advisory
https://support.apple.com/HT211290		x_refsource_MISCVendor Advisory
https://support.apple.com/HT211291		x_refsource_MISCVendor Advisory
https://support.apple.com/HT211292		x_refsource_MISCVendor Advisory
https://support.apple.com/HT211293		x_refsource_MISCVendor Advisory
https://support.apple.com/HT211294		x_refsource_MISCVendor Advisory
https://support.apple.com/HT211295		x_refsource_MISCVendor Advisory
https://webkitgtk.org/security/WSA-2020-0007.html
https://www.cve.org/CVERecord?id=CVE-2020-9893