CVE-2020-9843: Input Validation

Published May 18, 2020
·
Updated

An input validation issue was addressed with improved input validation. This issue is fixed in iOS 13.5 and iPadOS 13.5, tvOS 13.4.5, watchOS 6.2.5, Safari 13.1.1, iTunes 12.10.7 for Windows, iCloud for Windows 11.2, iCloud for Windows 7.19. Processing maliciously crafted web content may lead to a cross site scripting attack.

Other sources

An input validation issue was found in wekitgtk. Processing maliciously crafted web content may lead to a cross site scripting attack. Versions affected: WebKitGTK before 2.28.3 and WPE WebKit before 2.28.3.

— Red Hat

WebKit. An input validation issue was addressed with improved input validation.

Credit

Ryan Pickren (ryanpickren.com)

Affected Software

28 affected componentsFixes available
debian/webkit2gtk
2.44.2-1~deb11u12.44.3-1~deb11u12.44.2-1~deb12u12.44.3-1~deb12u12.44.4-1
debian/wpewebkit
2.38.6-1~deb11u12.38.6-12.44.4-1
Apple tvOS<13.4.5
13.4.5
Apple WatchOS<6.2.5
6.2.5
Apple iCloud for Windows<7.19
7.19
Apple iCloud for Windows<11.2
11.2
Apple iTunes for Windows<12.10.7
12.10.7
Apple Safari<13.1.1
13.1.1
Apple iOS<13.5
13.5
Apple iPadOS<13.5
13.5
Apple Icloud Windows<7.19
Apple Icloud Windows>=11.0<11.2
Apple Itunes Windows<12.10.7
Apple Safari<13.1.1
Apple iPadOS<13.5
Apple iPhone OS<13.5
Apple tvOS<13.4.5
Apple WatchOS<6.2.5
redhat/webkitgtk<2.28.3
2.28.3
alpine/webkit2gtk<2.28.3-r0
2.28.3-r0
alpine/webkit2gtk<2.28.3-r0
2.28.3-r0
alpine/webkit2gtk<2.28.3-r0
2.28.3-r0
alpine/webkit2gtk<2.28.3-r0
2.28.3-r0
alpine/webkit2gtk<2.28.3-r0
2.28.3-r0
alpine/webkit2gtk<2.28.3-r0
2.28.3-r0
alpine/webkit2gtk<2.28.3-r0
2.28.3-r0
alpine/webkit2gtk<2.28.3-r0
2.28.3-r0
alpine/webkit2gtk<2.28.3-r0
2.28.3-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 2.44.4-1
  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 2.44.4-1
  3. Upgrade

    Upgrade tvOS to a version that resolves this vulnerability.

    Fixed in 13.4.5
  4. Upgrade

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

    Fixed in 6.2.5
  5. Upgrade

    Upgrade Apple iCloud to a version that resolves this vulnerability.

    Fixed in 7.19
  6. Upgrade

    Upgrade Apple iCloud to a version that resolves this vulnerability.

    Fixed in 11.2
  7. Upgrade

    Upgrade iTunes to a version that resolves this vulnerability.

    Fixed in 12.10.7
  8. Upgrade

    Upgrade Safari to a version that resolves this vulnerability.

    Fixed in 13.1.1
  9. Upgrade

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

    Fixed in 13.5
  10. Upgrade

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

    Fixed in 13.5
  11. Upgrade

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

    Fixed in 2.28.3
  12. Upgrade

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

    Fixed in 2.28.3-r0
  13. Upgrade

    Upgrade WebKitGTK to a version that resolves this vulnerability.

    Fixed in 2.28.3
  14. Upgrade

    Upgrade WPE WebKit to a version that resolves this vulnerability.

    Fixed in 2.28.3
  15. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 13.5
  16. Upgrade

    Upgrade iPadOS to a version that resolves this vulnerability.

    Fixed in 13.5
  17. Upgrade

    Upgrade watchOS to a version that resolves this vulnerability.

    Fixed in 6.2.5
  18. Upgrade

    Upgrade iTunes for Windows to a version that resolves this vulnerability.

    Fixed in 12.10.7
  19. Upgrade

    Upgrade iCloud for Windows to a version that resolves this vulnerability.

    Fixed in 11.2
  20. Upgrade

    Upgrade iCloud for Windows to a version that resolves this vulnerability.

    Fixed in 7.19

Event History

Jun 9, 2020
CVE Published
via MITRE·04:18 PM
Data Sourced
via MITRE·04:18 PM
DescriptionWeakness
Data Sourced
via NVD·05:15 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·05:15 PM
DescriptionSeverityAffected Software
Sep 16, 2020
Data Sourced
via Red Hat·02:23 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-2020-9843?

CVE-2020-9843 is a vulnerability in WebKit that allows for an input validation issue.

2

What is the severity of CVE-2020-9843?

The severity of CVE-2020-9843 is not specified.

3

Which software versions are affected by CVE-2020-9843?

CVE-2020-9843 affects Apple Safari 13.1.1, Apple iOS up to 13.5, Apple iPadOS up to 13.5, Apple watchOS up to 6.2.5, Apple tvOS up to 13.4.5, Apple iTunes for Windows up to 12.10.7, and Apple iCloud for Windows up to 11.2.

4

How do I fix CVE-2020-9843?

To fix CVE-2020-9843, update to Apple Safari 13.1.1 or the latest versions of Apple iOS, iPadOS, watchOS, tvOS, iTunes for Windows, and iCloud for Windows.

5

Where can I find more information about CVE-2020-9843?

You can find more information about CVE-2020-9843 on the following references: [Reference 1](https://support.apple.com/en-us/HT211175), [Reference 2](https://support.apple.com/en-us/HT211168), [Reference 3](https://support.apple.com/en-us/HT211171).

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