CVE-2021-21133: Insufficient policy enforcement in Downloads

Published Dec 11, 2020
·
Updated

Insufficient policy enforcement in Downloads in Google Chrome prior to 88.0.4324.96 allowed an attacker who convinced a user to download files to bypass navigation restrictions via a crafted HTML page.

Credit

wester0x01(https://twitter.com/wester0x01)

Affected Software

3 affected componentsFixes available
Google Chrome<88.0.4324.96
88.0.4324.96
Google Chrome<88.0.4324.96
Microsoft Edge Chromium<88.0.705.50

Event History

Dec 11, 2020
CVE Published
12:00 AM
Feb 9, 2021
CVE Published
via MITRE·01:56 PM
Data Sourced
via MITRE·01:56 PM
DescriptionWeakness

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2021-21133?

CVE-2021-21133 is classified as a medium severity vulnerability affecting Google Chrome and Microsoft Edge Chromium.

2

How do I fix CVE-2021-21133?

To fix CVE-2021-21133, update Google Chrome to version 88.0.4324.96 or later, or Microsoft Edge Chromium to version 88.0.705.50 or later.

3

Which versions of Google Chrome are affected by CVE-2021-21133?

Google Chrome versions prior to 88.0.4324.96 are affected by CVE-2021-21133.

4

Which versions of Microsoft Edge Chromium are impacted by CVE-2021-21133?

Microsoft Edge Chromium versions prior to 88.0.705.50 are impacted by CVE-2021-21133.

5

What type of attack does CVE-2021-21133 enable?

CVE-2021-21133 enables an attacker to persuade a user to download files that can bypass navigation restrictions.

Contact

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