CVE-2020-1914

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A logic vulnerability when handling the SaveGeneratorLong instruction in Facebook Hermes prior to commit b2021df620824627f5a8c96615edbd1eb7fdddfc allows attackers to potentially read out of bounds or theoretically execute arbitrary code via crafted JavaScript. Note that this is only exploitable if the application using Hermes permits evaluation of untrusted JavaScript. Hence, most React Native applications are not affected.

Una vulnerabilidad lógica al manejar la instrucción SaveGeneratorLong en Facebook Hermes antes del commit b2021df620824627f5a8c96615edbd1eb7fdddfc, permite a atacantes leer potencialmente fuera de límites o, teóricamente, ejecutar código arbitrario por medio de JavaScript diseñado. Tome en cuenta que esto solo es explotable si la aplicación que utiliza Hermes permite una evaluación de un JavaScript que no es confiable. Por lo tanto, la mayoría de las aplicaciones React Native no están afectadas

*Credits: N/A

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

2019-12-02 CVE Reserved
2020-10-08 CVE Published
2024-02-26 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-670: Always-Incorrect Control Flow Implementation

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://github.com/facebook/hermes/commit/b2021df620824627f5a8c96615edbd1eb7fdddfc	2023-11-07

URL	Date	SRC
https://www.facebook.com/security/advisories/cve-2020-1914	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Facebook Search vendor "Facebook"		Hermes Search vendor "Facebook" for product "Hermes"				< 2020-10-01 Search vendor "Facebook" for product "Hermes" and version " < 2020-10-01"		-		Affected