PT-2021-2156 · Google+3 · Google Chrome+3

Alex Morgan + 1 · Published 2021-02-02 · Updated 2024-06-15 · CVE-2021-21143

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 88.0.4324.146

Description The issue is related to a heap buffer overflow in the Extensions component of Google Chrome, which could allow an attacker to exploit heap corruption via a crafted Chrome Extension if a user is convinced to install a malicious extension. This could potentially impact the confidentiality, integrity, and availability of protected information.

Recommendations For versions prior to 88.0.4324.146, update to version 88.0.4324.146 or later to resolve the issue. As a temporary workaround, consider disabling the installation of new extensions until the update is applied. Restrict access to the Extensions component to minimize the risk of exploitation. Avoid using crafted Chrome Extensions until the issue is resolved.

Exploit

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

ALT-PU-2021-1204

ALT-PU-2021-1238

ALT-PU-2021-1252

ALT-PU-2021-1253

ALT-PU-2021-1379

BDU:2021-01043

CVE-2021-21143

DSA-4846-1

OPENSUSE-SU-2021:0259-1

OPENSUSE-SU-2021:0268-1

OPENSUSE-SU-2021_0259-1

OPENSUSE-SU-2024:10681-1

OPENSUSE-SU-2024:12948-1

Affected Products

Alt Linux

Astra Linux

Google Chrome

Suse

References · 2353

• 🔥 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://github.com/marcinguy/CVE-2020-15999 · Exploit, Deleted
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-21143 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-21143 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-21143 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-21143 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-01043 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2024:10681-1 · Vendor Advisory