CVE-2018-6176: Local user privilege escalation in Extensions

Published Nov 18, 2016
·
Updated

A local user privilege escalation flaw was found in the Extensions component of the Chromium browser.

Upstream bug(s):

https://code.google.com/p/chromium/issues/detail?id=666824

External References:

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

Other sources

Insufficient file type enforcement in Extensions API in Google Chrome prior to 68.0.3440.75 allowed a remote attacker who had compromised the renderer process to perform privilege escalation via a crafted Chrome Extension.

Credit

Jann Horn(Google Project Zero)

Affected Software

4 affected componentsFixes available
debian/chromium-browser
redhat/chromium-browser<68.0.3440.75
68.0.3440.75
Google Chrome<68.0.3440.75
68.0.3440.75
Google Chrome<68.0.3440.75

Event History

Nov 18, 2016
CVE Published
12:00 AM
Jun 27, 2019
CVE Published
via MITRE·04:13 PM
Data Sourced
via MITRE·04:13 PM
DescriptionWeakness

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is CVE-2018-6176?

CVE-2018-6176 is a vulnerability that allows a remote attacker to perform privilege escalation via a crafted Chrome Extension in Google Chrome versions prior to 68.0.3440.75.

2

Which software is affected by CVE-2018-6176?

Google Chrome versions prior to 68.0.3440.75 and Chromium Browser are affected by CVE-2018-6176.

3

How can a remote attacker exploit CVE-2018-6176?

A remote attacker who has compromised the renderer process can exploit CVE-2018-6176 by using a crafted Chrome Extension to perform privilege escalation.

4

What is the severity of CVE-2018-6176?

CVE-2018-6176 has a severity rating of 7.8 (high).

5

How can I fix CVE-2018-6176?

To fix CVE-2018-6176, update your Google Chrome or Chromium Browser to version 68.0.3440.75 or later.

Contact

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