CVE-2019-8743: High severity Apple tvOS vulnerability

Published Sep 24, 2019
·
Updated

Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in watchOS 6.1. Processing maliciously crafted web content may lead to arbitrary code execution.

Other sources

WebKit. Multiple memory corruption issues were addressed with improved memory handling.

WebKitGTK Security Advisory WSA-2019-0006 describes the following issue:

CVE-2019-8743

Impact: Processing maliciously crafted web content may lead to arbitrary code execution. Description: Multiple memory corruption issues were addressed with improved memory handling.

Versions affected: WebKitGTK before 2.26.0 and WPE WebKit before 2.26.0.

— Red Hat

Credit

found by OSS-Fuzz, zhunki(Codesafe Team of Legendsec at Qi), Dongzhuo Zhao(ADLab of Venustech), Sergei Glazunov(Google Project Zero), Samuel Groß(Google Project Zero), an anonymous researcher(Trend Micro), cc(Trend Micro Zero Day Initiative), Jihui Lu(Tencent KeenLab), Junho Jang(LINE Security Team), Hanul Choi(ABLY Corporation), G. Geshev(Trend Micro Zero Day Initiative), Soyeon Park(SSLab at Georgia Tech), JunDong Xie(Ant)

Affected Software

21 affected componentsFixes available
redhat/webkitgtk<2.26.0
2.26.0
Apple tvOS<13
13
Apple WatchOS<6.1
6.1
Apple WatchOS<6.1
Apple iCloud for Windows<7.14
7.14
Apple iCloud for Windows<10.7
10.7
Apple iTunes for Windows<12.10.1
12.10.1
Apple Safari<13.0.1
13.0.1
Apple iOS<13.1
13.1
Apple iPadOS<13.1
13.1
alpine/webkit2gtk<2.26.0-r0
2.26.0-r0
alpine/webkit2gtk<2.26.0-r0
2.26.0-r0
alpine/webkit2gtk<2.26.0-r0
2.26.0-r0
alpine/webkit2gtk<2.26.0-r0
2.26.0-r0
alpine/webkit2gtk<2.26.0-r0
2.26.0-r0
alpine/webkit2gtk<2.26.0-r0
2.26.0-r0
alpine/webkit2gtk<2.26.0-r0
2.26.0-r0
alpine/webkit2gtk<2.26.0-r0
2.26.0-r0
alpine/webkit2gtk<2.26.0-r0
2.26.0-r0
alpine/webkit2gtk<2.26.0-r0
2.26.0-r0
alpine/webkit2gtk<2.26.0-r0
2.26.0-r0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 2.26.0
  2. Upgrade

    Upgrade tvOS to a version that resolves this vulnerability.

    Fixed in 13
  3. Upgrade

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

    Fixed in 6.1
  4. Upgrade

    Upgrade Apple iCloud to a version that resolves this vulnerability.

    Fixed in 7.14
  5. Upgrade

    Upgrade Apple iCloud to a version that resolves this vulnerability.

    Fixed in 10.7
  6. Upgrade

    Upgrade iTunes to a version that resolves this vulnerability.

    Fixed in 12.10.1
  7. Upgrade

    Upgrade Safari to a version that resolves this vulnerability.

    Fixed in 13.0.1
  8. Upgrade

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

    Fixed in 13.1
  9. Upgrade

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

    Fixed in 13.1
  10. Upgrade

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

    Fixed in 2.26.0-r0
  11. Upgrade

    Upgrade watchOS to a version that resolves this vulnerability.

    Fixed in 6.1
  12. Upgrade

    Upgrade WebKitGTK to a version that resolves this vulnerability.

    Fixed in 2.26.0
  13. Upgrade

    Upgrade WPE WebKit to a version that resolves this vulnerability.

    Fixed in 2.26.0

Event History

Dec 18, 2019
CVE Published
via MITRE·05:33 PM
Data Sourced
via MITRE·05:33 PM
DescriptionWeakness
Data Sourced
via NVD·06:15 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·06:15 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-2019-8743?

CVE-2019-8743 is a vulnerability in WebKit that allows arbitrary code execution when processing maliciously crafted web content.

2

What is the severity of CVE-2019-8743?

CVE-2019-8743 has a severity score of 8.8, which is considered high.

3

How can I fix CVE-2019-8743 in WatchOS?

To fix CVE-2019-8743 in WatchOS, update to version 6.1 or later.

4

What other software is affected by CVE-2019-8743?

CVE-2019-8743 also affects Safari, iCloud for Windows, iTunes for Windows, tvOS, iOS, and iPadOS.

5

Where can I find more information about CVE-2019-8743?

You can find more information about CVE-2019-8743 on the Apple support website: [link1], [link2], [link3].

Company

Resources

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