medium
6.5
CWE
346
Advisory Published
CVE Published
Updated

CVE-2021-21163: Insufficient data validation in Reader Mode

First published: Thu Jul 30 2020(Updated: )

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.

Credit: chrome-cve-admin@google.com Alison Huffman Microsoft Browser Vulnerability Research

Affected SoftwareAffected VersionHow to fix
debian/chromium
90.0.4430.212-1~deb10u1
116.0.5845.180-1~deb11u1
118.0.5993.70-1~deb11u1
116.0.5845.180-1~deb12u1
118.0.5993.70-1~deb12u1
118.0.5993.70-1
Google Chrome (Trace Event)<89.0.4389.72
89.0.4389.72
Google Chrome (Trace Event)<89.0.4389.72
iStyle @cosme iPhone OS
Fedora=32
Fedora=33
Fedora=34
Debian=10.0

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of CVE-2021-21163?

    CVE-2021-21163 has a medium severity rating due to its potential to allow data leakage from cross-origin sources.

  • How do I fix CVE-2021-21163?

    To mitigate CVE-2021-21163, upgrade Google Chrome to version 89.0.4389.72 or later.

  • Which versions of Google Chrome are affected by CVE-2021-21163?

    CVE-2021-21163 affects Google Chrome versions prior to 89.0.4389.72.

  • What platforms are impacted by CVE-2021-21163?

    CVE-2021-21163 primarily impacts Google Chrome on iOS devices.

  • Can CVE-2021-21163 be exploited remotely?

    Yes, CVE-2021-21163 can be exploited remotely through specially crafted HTML pages.

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