PT-2021-2250 · Google+3 · Google Chrome+3

Alison Huffman · Published 2021-03-02 · Updated 2024-06-15 · CVE-2021-21163

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:C/I:N/A:N

Name of the Vulnerable Software and Affected Versions Google Chrome versions prior to 89.0.4389.72

Description The issue is related to insufficient data validation in Reader Mode, allowing a remote attacker to leak cross-origin data via a crafted HTML page and a malicious server. This can lead to unauthorized access to protected information.

Recommendations For versions prior to 89.0.4389.72, update to version 89.0.4389.72 or later to resolve the issue. As a temporary workaround, consider disabling Reader Mode until a patch is available. Restrict access to potentially malicious servers and crafted HTML pages to minimize the risk of exploitation.

Fix

RCE

Origin Validation Error

Weakness Enumeration

CWE-20

CWE-346

Related Identifiers

ALT-PU-2021-1460

ALT-PU-2021-1511

ALT-PU-2021-1668

ALT-PU-2021-1751

ALT-PU-2021-2141

BDU:2021-01223

CVE-2021-21163

DSA-4886-1

MGASA-2021-0142

OPENSUSE-SU-2021:0392-1

OPENSUSE-SU-2021:0401-1

OPENSUSE-SU-2021_0392-1

OPENSUSE-SU-2024:10681-1

OPENSUSE-SU-2024:12948-1

Affected Products

Alt Linux

Astra Linux

Google Chrome

Suse

References · 2348

• https://ubuntu.com/security/CVE-2021-21163 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-21163 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2024:10681-1 · Vendor Advisory
• https://security.gentoo.org/glsa/202104-08 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4886-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-21163 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BBT54RKAE5XLMWSHLVUKJ7T2XHHYMXLH · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:12948-1 · Vendor Advisory
• https://chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-01223 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-21163 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2021:0401-1 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LCIDZ77XUDMB2EBPPWCQXPEIJERDNSNT · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-21163 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FE5SIKEVYTMDCC5OSXGOM2KRPYLHYMQX · Vendor Advisory