CVE-2021-23543

Sandbox Bypass

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

All versions of package realms-shim are vulnerable to Sandbox Bypass via a Prototype Pollution attack vector.

Todas las versiones del paquete realms-shim son vulnerables a una Omisión del Sandbox por medio de un vector de ataque de Contaminación de Prototipos

*Credits: Cristian-Alexandru Staicu, Abdullah Alhamdan

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-08 CVE Reserved
2022-01-07 CVE Published
2024-09-16 CVE Updated
2024-09-16 First Exploit
2024-10-18 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

CAPEC

References (2)

URL	Tag	Source
https://www.npmjs.com/package/realms-shim	Product

URL	Date	SRC
https://snyk.io/vuln/SNYK-JS-REALMSSHIM-2309908	2024-09-16

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Agoric Search vendor "Agoric"		Realms-shim Search vendor "Agoric" for product "Realms-shim"				*		node.js		Affected