PT-2021-2805 · Microsoft+4 · Edge+5

Guang Gong · Published 2021-03-30 · Updated 2024-06-15 · CVE-2021-21222

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Google Chrome versions prior to 90.0.4430.85 Microsoft Edge (affected versions not specified)

Description The issue is related to a heap buffer overflow in the V8 JavaScript engine handler, which can be exploited by a remote attacker to execute arbitrary code. This can be achieved by bypassing site isolation via a crafted HTML page, assuming the renderer process has been compromised.

Recommendations For Google Chrome versions prior to 90.0.4430.85, update to version 90.0.4430.85 or later to resolve the issue. For Microsoft Edge, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Heap Based Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-122

CWE-787

Related Identifiers

ALT-PU-2021-1876

ALT-PU-2021-1972

ALT-PU-2021-2007

ALT-PU-2021-2009

ALT-PU-2021-2141

BDU:2021-02350

CVE-2021-21222

DSA-4906-1

OPENSUSE-SU-2021:0629-1

OPENSUSE-SU-2021:0712-1

OPENSUSE-SU-2021_0629-1

OPENSUSE-SU-2021_0712-1

OPENSUSE-SU-2024:10681-1

OPENSUSE-SU-2024:12948-1

Affected Products

Alt Linux

Astra Linux

Google Chrome

Edge

Suse

V8 Javascript Engine

References · 2349

• 🔥 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://safe-surf.ru/specialists/bulletins-nkcki/664263 · Security Note
• https://wiki.astralinux.ru/astra-linux-se17-bulletin-2021-1126SE17 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4906-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-21222 · Security Note
• https://bdu.fstec.ru/vul/2021-02350 · Security Note
• https://ubuntu.com/security/CVE-2021-21222 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-21222 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-21222 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY · Vendor Advisory
• https://security.gentoo.org/glsa/202104-08 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG · Vendor Advisory