PT-2021-5629 · Google+3 · Google Chrome+3

David Erceg · Published 2021-06-09 · Updated 2024-06-15 · CVE-2021-30549

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 91.0.4472.101

Description The issue is related to a use after free in the spell check function of Google Chrome, which can be exploited by an attacker who convinces a user to install a malicious extension. This can potentially lead to heap corruption via a crafted HTML page, allowing a remote attacker to bypass existing security restrictions.

Recommendations For versions prior to 91.0.4472.101, update to version 91.0.4472.101 or later to resolve the issue. As a temporary workaround, consider disabling the spell check function until a patch is available. Restrict access to malicious extensions to minimize the risk of exploitation. Avoid using crafted HTML pages in the affected browser version until the issue is resolved.

Exploit

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALT-PU-2021-1974

ALT-PU-2021-2007

ALT-PU-2021-2068

ALT-PU-2021-2097

ALT-PU-2021-2141

BDU:2022-00065

CVE-2021-30549

OPENSUSE-SU-2021:0881-1

OPENSUSE-SU-2021:0938-1

OPENSUSE-SU-2021:0948-1

OPENSUSE-SU-2021:0949-1

OPENSUSE-SU-2021_0881-1

OPENSUSE-SU-2021_0948-1

OPENSUSE-SU-2021_0949-1

OPENSUSE-SU-2022:0110-1

OPENSUSE-SU-2022_0110-1

OPENSUSE-SU-2024:10681-1

OPENSUSE-SU-2024:12948-1

Affected Products

Alt Linux

Astra Linux

Google Chrome

Suse

References · 2364

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/browser/chrome_cve_2021_21220_v8_insufficient_validation.rb · Exploit
• 🔥 https://github.com/Phuong39/PoC-CVE-2021-30632 · Exploit
• 🔥 https://github.com/ZeusBox/CVE-2021-37980 · Exploit
• 🔥 https://github.com/SpiralBL0CK/Chrome-V8-RCE-CVE-2021-38003 · Exploit
• 🔥 https://github.com/CrackerCat/CVE-2021-30632 · Exploit
• 🔥 https://github.com/Peterpan0927/TFC-Chrome-v8-bug-CVE-2021-38001-poc · Exploit
• 🔥 https://github.com/xmzyshypnc/CVE-2021-30551 · Exploit
• 🔥 https://github.com/security-dbg/CVE-2021-21220 · Exploit
• 🔥 https://github.com/maldiohead/TFC-Chrome-v8-bug-CVE-2021-38001-poc · Exploit
• 🔥❌ https://github.com/ohnonoyesyes/CVE-2021-21224 · Exploit, Deleted
• 🔥❌ https://github.com/Lagal1990/CVE-2021-30632 · Exploit, Deleted
• 🔥❌ https://github.com/Expdev893/CVE-2021-30632 · Exploit, Deleted
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-30549 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-30549 · Vendor Advisory