PT-2021-2059 · Google+3 · Google Chrome+3

Jasminder Pal Singh · Published 2021-01-19 · Updated 2024-06-15 · CVE-2021-21127

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: Google Chrome versions prior to 88.0.4324.96

Description: The issue is related to insufficient policy enforcement in extensions, allowing a remote attacker to bypass content security policy via a crafted Chrome Extension. This could enable the attacker to circumvent existing security restrictions.

Recommendations: For versions prior to 88.0.4324.96, update to version 88.0.4324.96 or later to resolve the issue. As a temporary workaround, consider disabling the use of Chrome Extensions until a patch is applied. Restrict access to the Chrome Extension platform to minimize the risk of exploitation.

Exploit

Fix

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

ALT-PU-2021-1146

ALT-PU-2021-1179

ALT-PU-2021-1198

ALT-PU-2021-1210

ALT-PU-2021-1379

BDU:2021-00906

CVE-2021-21127

DSA-4846-1

MGASA-2021-0406

OPENSUSE-SU-2021:0166-1

OPENSUSE-SU-2021:0173-1

OPENSUSE-SU-2021:0177-1

OPENSUSE-SU-2021:0186-1

OPENSUSE-SU-2021:0973-1

OPENSUSE-SU-2021:1016-1

OPENSUSE-SU-2021_0166-1

OPENSUSE-SU-2021_0173-1

OPENSUSE-SU-2021_0973-1

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 · 2362

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/browser/chrome_simplifiedlowering_overflow.rb · Exploit
• 🔥 https://github.com/Puliczek/CVE-2021-21123-PoC-Google-Chrome · Exploit
• 🔥 https://github.com/PerimeterX/CVE-2020-6519 · Exploit
• 🔥 https://github.com/aleksejspopovs/cve-2020-16012 · Exploit
• 🔥 https://github.com/R0jhack/CVE-2020-6514 · Exploit
• 🔥 https://github.com/hasan-khalil/CVE-2020-6514 · Exploit
• 🔥 https://github.com/HassanAzze/CVE-2020-6514 · Exploit
• 🔥 https://github.com/rojhack/CVE-2020-6514 · Exploit
• 🔥 https://crbug.com/1115590 · Exploit
• 🔥❌ https://github.com/marcinguy/CVE-2020-15999 · Exploit, Deleted
• https://nvd.nist.gov/vuln/detail/CVE-2021-21127 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2021:1016-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-21127 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2021:0166-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:10681-1 · Vendor Advisory