CVE-2020-4076

Context isolation bypass via leaked cross-context objects in Electron

Severity Score

9.0

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In Electron before versions 7.2.4, 8.2.4, and 9.0.0-beta21, there is a context isolation bypass. Code running in the main world context in the renderer can reach into the isolated Electron context and perform privileged actions. Apps using contextIsolation are affected. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4.

En Electron antes de las versiones 7.2.4, 8.2.4 y 9.0.0-beta21, se presenta una omisión de aislamiento de contexto. El código que se ejecuta en el contexto mundial principal en el renderizador puede alcanzar el contexto Electron aislado y llevar a cabo acciones privilegiadas. Las aplicaciones que usan contextIsolation están afectadas. Esto es corregido en las versiones 9.0.0-beta.21, 8.2.4 y 7.2.4

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-12-30 CVE Reserved
2020-07-07 CVE Published
2023-03-22 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-501: Trust Boundary Violation

CAPEC

References (2)

URL	Tag	Source
https://github.com/electron/electron/security/advisories/GHSA-m93v-9qjc-3g79	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.electronjs.org/releases/stable?page=3#release-notes-for-v824	2020-07-13

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				>= 7.0.0 < 7.2.4 Search vendor "Electronjs" for product "Electron" and version " >= 7.0.0 < 7.2.4"		-		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				>= 8.0.0 < 8.2.4 Search vendor "Electronjs" for product "Electron" and version " >= 8.0.0 < 8.2.4"		-		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		-		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		beta1		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		beta10		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		beta11		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		beta12		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		beta13		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		beta14		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		beta15		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		beta16		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		beta17		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		beta18		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		beta19		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		beta2		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		beta20		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		beta3		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		beta4		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		beta5		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		beta6		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		beta7		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		beta8		Affected
Electronjs Search vendor "Electronjs"		Electron Search vendor "Electronjs" for product "Electron"				9.0.0 Search vendor "Electronjs" for product "Electron" and version "9.0.0"		beta9		Affected