CVE-2021-21148

Google Chromium V8 Heap Buffer Overflow Vulnerability

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

Yes

*KEV

Decision

*SSVC

Descriptions

Heap buffer overflow in V8 in Google Chrome prior to 88.0.4324.150 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Un desbordamiento del búfer de la pila en V8 en Google Chrome versiones anteriores a 88.0.4324.150, permitió a un atacante remoto explotar potencialmente una corrupción de la pila por medio de una página HTML diseñada

The fix for CVE-2021-21148 has added a check in |ValueSerializer::WriteJSArrayBuffer| to make sure non-detachable array buffers cannot be transferred. The check can be bypassed with the help of asm.js and property getters.

Google Chromium V8 Engine contains a heap buffer overflow vulnerability that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-12-21 CVE Reserved
2021-02-07 First Exploit
2021-02-09 CVE Published
2021-11-03 Exploited in Wild
2021-11-17 KEV Due Date
2024-08-03 CVE Updated
2024-12-17 EPSS Updated

CWE

CWE-787: Out-of-bounds Write

CAPEC

References (7)

URL	Tag	Source
http://packetstormsecurity.com/files/162579/Chrome-Array-Transfer-Bypass.html	Third Party Advisory

URL	Date	SRC
https://github.com/Grayhaxor/CVE-2021-21148	2021-02-07

URL	Date	SRC

URL	Date	SRC
https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_4.html	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7ACWYJ74Z3YN2XH4QMUEGNBC3VXX464L	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUQSMNV7INLDDSD3RKI5S5EAULX2QC7P	2023-11-07
https://security.gentoo.org/glsa/202104-08	2023-11-07
https://www.debian.org/security/2021/dsa-4858	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Google Search vendor "Google"		Chrome Search vendor "Google" for product "Chrome"				< 88.0.4324.150 Search vendor "Google" for product "Chrome" and version " < 88.0.4324.150"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				32 Search vendor "Fedoraproject" for product "Fedora" and version "32"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				33 Search vendor "Fedoraproject" for product "Fedora" and version "33"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected