CVE-2021-21163

Description

Insufficient data validation in Reader Mode in Google Chrome on iOS prior to 89.0.4389.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page and a malicious server.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.57%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory gentoo.org Vendor Advisory googleblog.com
Affected: Google Chrome
Published at:
Updated at:

References

Link Tags
https://chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop.html release notes vendor advisory
https://crbug.com/1111239 permissions required
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FE5SIKEVYTMDCC5OSXGOM2KRPYLHYMQX/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BBT54RKAE5XLMWSHLVUKJ7T2XHHYMXLH/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LCIDZ77XUDMB2EBPPWCQXPEIJERDNSNT/ vendor advisory
https://www.debian.org/security/2021/dsa-4886 third party advisory vendor advisory
https://security.gentoo.org/glsa/202104-08 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-21163?
CVE-2021-21163 has been scored as a medium severity vulnerability.
How to fix CVE-2021-21163?
To fix CVE-2021-21163, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-21163 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-21163 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21163?
CVE-2021-21163 affects Google Chrome.
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