PT-2021-2014 · Google+3 · V8 Javascript Engine+4

Sergei Glazunov · Published 2021-02-16 · Updated 2024-06-15 · CVE-2021-21156

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 88.0.4324.182

Description The issue is caused by a heap buffer overflow in the V8 JavaScript engine of Google Chrome, which can be exploited by a remote attacker to potentially execute arbitrary code via a crafted script. This can lead to heap corruption.

Recommendations For versions prior to 88.0.4324.182, update to version 88.0.4324.182 or later to resolve the issue. As a temporary workaround, consider restricting the execution of crafted scripts in the V8 engine until a patch is applied.

Exploit

Fix

Heap Based Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-122

CWE-787

Related Identifiers

ALT-PU-2021-1460

ALT-PU-2021-1511

ALT-PU-2021-1668

ALT-PU-2021-1751

ALT-PU-2021-2141

BDU:2021-00850

CVE-2021-21156

DSA-4858-1

MGASA-2021-0406

OPENSUSE-SU-2021:0392-1

OPENSUSE-SU-2021:0401-1

OPENSUSE-SU-2021:0413-1

OPENSUSE-SU-2021:0973-1

OPENSUSE-SU-2021:1016-1

OPENSUSE-SU-2021_0392-1

OPENSUSE-SU-2021_0413-1

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

V8 Javascript Engine

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/Puliczek/CVE-2021-21123-PoC-Google-Chrome · 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://osv.dev/vulnerability/openSUSE-SU-2021:1016-1 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BI6ZIJQYP5DFMYVX4J5OGOU2NQLEZ3SB · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-21156 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-21156 · Security Note
• https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_16.html · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:10681-1 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se16-bulletin-20210611SE16 · Vendor Advisory
• https://safe-surf.ru/specialists/bulletins-nkcki/661769 · Security Note
• https://advisories.mageia.org/MGASA-2021-0406.html · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-21156 · Vendor Advisory