CVE-2019-8623: High severity Apple tvOS vulnerability

Published May 13, 2019
·
Updated

Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, watchOS 5.2.1, Safari 12.1.1, iTunes for Windows 12.9.5, iCloud for Windows 7.12. 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-2019-0003 describes the following issue:

CVE-2019-8623

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

Versions affected: WebKitGTK and WPE WebKit before 2.24.0.

— Red Hat

Credit

G. Geshev(Trend Micro Zero Day Initiative), Liu Long(Qihoo 360 Vulcan Team), 01(Trend Micro), sakura(Tencent Xuanwu Lab), jessica@@babyjess1ca_(Tencent Keen Lab), dwfault working at ADLab(Venustech), G. Geshev(MWR Labs working with Trend Micro Zero Day Initiative), an anonymous researcher, Suyoung Lee, Sooel Son(KAIST Web Security), HyungSeok Han, Sang Kil Cha(KAIST SoftSec Lab), Wen Xu(SSLab at Georgia Tech), 01(Trend Micro Zero Day Initiative), Fluoroacetate(Trend Micro), Wen Xu(SSLab), Georgia Tech, Anonymous(Trend Micro Zero Day Initiative), Samuel Groß(Google Project Zero), G. Geshev(MWR Labs working with Trend Micro), Hanqing Zhao(Chaitin Security Research Lab)

Affected Software

16 affected componentsFixes available
redhat/webkitgtk<2.24.0
2.24.0
Apple tvOS<12.3
12.3
Apple macOS Mojave<10.14.5
10.14.5
Apple High Sierra
Apple Sierra
Apple WatchOS<5.2.1
5.2.1
Apple iTunes for Windows<12.9.5
12.9.5
Apple iOS<12.3
12.3
Apple Icloud Windows<7.12
Apple Icloud Windows>=10.0<10.4
Apple Itunes Windows<12.9.5
Apple Safari<12.1.1
Apple iPhone OS<12.3
Apple iOS and macOS<10.14.5
Apple tvOS<12.3
Apple WatchOS<5.2.1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 2.24.0
  2. Upgrade

    Upgrade tvOS to a version that resolves this vulnerability.

    Fixed in 12.3
  3. Upgrade

    Upgrade macOS Mojave to a version that resolves this vulnerability.

    Fixed in 10.14.5
  4. Upgrade

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

    Fixed in 5.2.1
  5. Upgrade

    Upgrade iTunes to a version that resolves this vulnerability.

    Fixed in 12.9.5
  6. Upgrade

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

    Fixed in 12.3
  7. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 12.3
  8. Upgrade

    Upgrade watchOS to a version that resolves this vulnerability.

    Fixed in 5.2.1
  9. Upgrade

    Upgrade Safari to a version that resolves this vulnerability.

    Fixed in 12.1.1
  10. Upgrade

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

    Fixed in 12.9.5
  11. Upgrade

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

    Fixed in 7.12
  12. Upgrade

    Upgrade WebKitGTK and WPE WebKit to a version that resolves this vulnerability.

    Fixed in 2.24.0

Event History

Dec 18, 2019
CVE Published
via MITRE·05:33 PM
Data Sourced
via MITRE·05:33 PM
DescriptionWeakness
Data Sourced
via OSV·06:15 PM
DescriptionSeverity

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is CVE-2019-8623?

CVE-2019-8623 is a vulnerability related to WebKit that involves multiple memory corruption issues and has been fixed in various Apple operating systems and software.

2

How severe is CVE-2019-8623?

CVE-2019-8623 has a severity rating of 8.8, which is considered high.

3

Which software versions are affected by CVE-2019-8623?

CVE-2019-8623 affects iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, watchOS 5.2.1, Safari 12.1.1, iTunes for Windows 12.9.5, and iCloud for Windows 7.12.

4

How can I fix CVE-2019-8623?

To fix CVE-2019-8623, make sure you update your software to the fixed versions: iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, watchOS 5.2.1, Safari 12.1.1, iTunes for Windows 12.9.5, and iCloud for Windows 7.12.

5

Where can I find more information about CVE-2019-8623?

You can find more information about CVE-2019-8623 on the Apple support website. Here are some useful links: [HT210119](https://support.apple.com/en-us/HT210119), [HT210118](https://support.apple.com/en-us/HT210118), [HT210120](https://support.apple.com/en-us/HT210120).

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