CVE-2021-23438

Prototype Pollution

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

This affects the package mpath before 0.8.4. A type confusion vulnerability can lead to a bypass of CVE-2018-16490. In particular, the condition ignoreProperties.indexOf(parts[i]) !== -1 returns -1 if parts[i] is ['__proto__']. This is because the method that has been called if the input is an array is Array.prototype.indexOf() and not String.prototype.indexOf(). They behave differently depending on the type of the input.

Esto afecta al paquete mpath versiones anteriores a 0.8.4. Una vulnerabilidad de confusión de tipo puede conllevar a una omisión de CVE-2018-16490. En concreto, la condición ignoreProperties.indexOf(parts[i]) !== -1 returns -1 if parts[i] is ['__proto__']. Esto es debido a que el método que se ha llamado si la entrada es un array es Array.prototype.indexOf() y no String.prototype.indexOf(). Se comportan de forma diferente según el tipo de entrada

*Credits: Alessio Della Libera of Snyk Research Team

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

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

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
2021-09-01 CVE Published
2024-07-24 EPSS Updated
2024-09-16 CVE Updated
2024-09-16 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')

CAPEC

References (3)

URL	Tag	Source

URL	Date	SRC
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1579548	2024-09-16
https://snyk.io/vuln/SNYK-JS-MPATH-1577289	2024-09-16

URL	Date	SRC
https://github.com/aheckmann/mpath/commit/89402d2880d4ea3518480a8c9847c541f2d824fc	2021-09-10

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mpath Project Search vendor "Mpath Project"		Mpath Search vendor "Mpath Project" for product "Mpath"				< 0.8.4 Search vendor "Mpath Project" for product "Mpath" and version " < 0.8.4"		node.js		Affected