PT-2020-6490 · Google+3 · Google Chrome+3

Eliya Stein · Published 2020-11-04 · Updated 2025-10-24 · CVE-2021-30533

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions Google Chrome versions prior to 91.0.4472.77

Description The issue is related to insufficient policy enforcement in the PopupBlocker component of Google Chrome, allowing a remote attacker to bypass navigation restrictions. This can be achieved via a crafted iframe, potentially impacting data integrity.

Recommendations For versions prior to 91.0.4472.77, update to version 91.0.4472.77 or later to resolve the issue. As a temporary workaround, consider restricting the use of iframes in Google Chrome until the update is applied.

Exploit

Fix

Incorrect Authorization

Weakness Enumeration

CWE-863

Related Identifiers

ALT-PU-2021-1876

ALT-PU-2021-1972

ALT-PU-2021-2007

ALT-PU-2021-2009

ALT-PU-2021-2141

BDU:2021-05281

CVE-2021-30533

OPENSUSE-SU-2021:0825-1

OPENSUSE-SU-2021:0840-1

OPENSUSE-SU-2021_0825-1

OPENSUSE-SU-2024:10681-1

OPENSUSE-SU-2024:10977-1

OPENSUSE-SU-2024:12948-1

Affected Products

Alt Linux

Astra Linux

Google Chrome

Suse

References · 2350

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/browser/chrome_cve_2021_21220_v8_insufficient_validation.rb · Exploit
• 🔥 https://github.com/xmzyshypnc/CVE-2021-30551 · Exploit
• 🔥 https://github.com/security-dbg/CVE-2021-21220 · Exploit
• 🔥❌ https://github.com/ohnonoyesyes/CVE-2021-21224 · Exploit, Deleted
• 🔥 https://crbug.com/1145553 · Exploit
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2021:0840-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-30533 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-30533 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-30533 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-30533 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-30533 · Vendor Advisory
• https://security.gentoo.org/glsa/202107-06 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-30533 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:10681-1 · Vendor Advisory