CVE-2018-4117: Cross orig in information leak in Blink

Published Dec 3, 2017
·
Updated

A cross origin information leak flaw was found in the Blink component of the Chromium browser.

Upstream bug(s):

https://code.google.com/p/chromium/issues/detail?id=791324

External References:

https://chromereleases.googleblog.com/2018/07/stable-channel-update-for-desktop.html

Other sources

An issue was discovered in certain Apple products. iOS before 11.3 is affected. Safari before 11.1 is affected. iCloud before 7.4 on Windows is affected. iTunes before 12.7.4 on Windows is affected. watchOS before 4.3 is affected. The issue involves the fetch API in the "WebKit" component. It allows remote attackers to bypass the Same Origin Policy and obtain sensitive information via a crafted web site.

— Launchpad

WebKit. A cross-origin issue existed with the fetch API. This was addressed through improved input validation.

WebKit. A cross-origin issue existed with the fetch API. This was addressed with improved input validation.

Credit

an anonymous researcher, AhsanEjaz -@@AhsanEjazA

Affected Software

24 affected componentsFixes available
redhat/chromium-browser<68.0.3440.75
68.0.3440.75
debian/webkit2gtk
2.44.2-1~deb11u12.44.3-1~deb11u12.44.2-1~deb12u12.44.3-1~deb12u12.46.0-22.46.1-1
Apple WatchOS<4.3
4.3
Apple iCloud for Windows<7.4
7.4
Google Chrome<68.0.3440.75
68.0.3440.75
Apple Safari<11.1
11.1
Apple iOS<11.3
11.3
Apple Safari<11.1
Apple iPhone OS<11.3
Apple WatchOS<4.3
All of the following
Apple iCloud<7.4
Microsoft Windows
All of the following
Apple iTunes<12.7.4
Microsoft Windows
WebKitGTK Webkitgtk\+<2.20.4
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=17.10
Debian Debian Linux=9.0
redhat Enterprise Linux Desktop=6.0
redhat Enterprise Linux Server=6.0
redhat Enterprise Linux Workstation=6.0
Apple iCloud<7.4
Microsoft Windows
Apple iTunes<12.7.4

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/chromium-browser to a version that resolves this vulnerability.

    Fixed in 68.0.3440.75
  2. 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 2.46.0-2Fixed in 2.46.1-1
  3. Upgrade

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

    Fixed in 4.3
  4. Upgrade

    Upgrade Apple iCloud to a version that resolves this vulnerability.

    Fixed in 7.4
  5. Upgrade

    Upgrade Google Chrome (Trace Event) to a version that resolves this vulnerability.

    Fixed in 68.0.3440.75
  6. Upgrade

    Upgrade Safari to a version that resolves this vulnerability.

    Fixed in 11.1
  7. Upgrade

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

    Fixed in 11.3
  8. Upgrade

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

    Fixed in 7.4
  9. Upgrade

    Upgrade iOS to a version that resolves this vulnerability.

    Fixed in 11.3
  10. Upgrade

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

    Fixed in 12.7.4
  11. Upgrade

    Upgrade watchOS to a version that resolves this vulnerability.

    Fixed in 4.3

Event History

Dec 3, 2017
CVE Published
12:00 AM
Apr 3, 2018
CVE Published
via MITRE·06:00 AM
Data Sourced
via MITRE·06:00 AM
Description

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is vulnerability CVE-2018-4117?

Vulnerability CVE-2018-4117 is a cross-origin issue in the fetch API component of WebKit.

2

Which Apple products are affected by CVE-2018-4117?

iOS before 11.3, Safari before 11.1, iCloud before 7.4 on Windows, iTunes before 12.7.4 on Windows, and watchOS before 4.3 are affected.

3

What is the severity of CVE-2018-4117?

CVE-2018-4117 has a severity rating of 6.5 (medium).

4

How can I fix CVE-2018-4117?

To fix CVE-2018-4117, it is recommended to update to the latest available version of the affected software.

5

Where can I find more information about CVE-2018-4117?

You can find more information about CVE-2018-4117 on the following websites: securityfocus.com, securitytracker.com, and access.redhat.com.

Company

Resources

Contact

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