CVE-2019-8766: 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, iCloud for Windows 11.0. 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-2019-8766

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

20 affected componentsFixes available
redhat/webkitgtk<2.26.0
2.26.0
Apple tvOS<13
13
Apple WatchOS<6.1
6.1
Apple Icloud Windows<10.8
Apple WatchOS<6.1
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 iTunes to a version that resolves this vulnerability.

    Fixed in 12.10.1
  5. Upgrade

    Upgrade Safari to a version that resolves this vulnerability.

    Fixed in 13.0.1
  6. Upgrade

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

    Fixed in 13.1
  7. Upgrade

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

    Fixed in 13.1
  8. Upgrade

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

    Fixed in 2.26.0-r0
  9. Upgrade

    Upgrade WebKitGTK to a version that resolves this vulnerability.

    Fixed in 2.26.0
  10. Upgrade

    Upgrade WPE WebKit to a version that resolves this vulnerability.

    Fixed in 2.26.0
  11. Upgrade

    Upgrade watchOS to a version that resolves this vulnerability.

    Fixed in 6.1
  12. Upgrade

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

    Fixed in 11.0

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-2019-8766?

CVE-2019-8766 is a vulnerability that affects WebKit, which is the browser engine used by Apple Safari, iOS, iPadOS, and other Apple products.

2

How severe is CVE-2019-8766?

CVE-2019-8766 has a severity score of 8.8 out of 10, indicating a high severity.

3

Which software versions are affected by CVE-2019-8766?

Versions up to and excluding WebKitGTK 2.26.0, watchOS 6.1, and iCloud for Windows 11.0 are affected by CVE-2019-8766.

4

How can I fix CVE-2019-8766?

To fix CVE-2019-8766, update to WebKitGTK 2.26.0, watchOS 6.1, or iCloud for Windows 11.0 or later versions.

5

Where can I find more information about CVE-2019-8766?

More information about CVE-2019-8766 can be found on the Apple support website: [https://support.apple.com/en-us/HT210603](https://support.apple.com/en-us/HT210603), [https://support.apple.com/en-us/HT210604](https://support.apple.com/en-us/HT210604), [https://support.apple.com/en-us/HT210635](https://support.apple.com/en-us/HT210635).

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