CVE-2021-21384

Null characters not escaped in shescape

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

shescape is a simple shell escape package for JavaScript. In shescape before version 1.1.3, anyone using _Shescape_ to defend against shell injection may still be vulnerable against shell injection if the attacker manages to insert a into the payload. For an example see the referenced GitHub Security Advisory. The problem has been patched in version 1.1.3. No further changes are required.

shescape es un paquete de escape de shell simple para JavaScript. En shescape versiones anteriores a 1.1.3, cualquiera que use _Shescape_ para defenderse de la inyección de shell puede ser vulnerable frente a una inyección shell si el atacante logra insertar en la carga útil. Para visualizar un ejemplo, consulte el Aviso de Seguridad de GitHub al que se hace referencia. El problema ha sido solucionado en la versión 1.1.3. No son requeridos más cambios

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

High

Availability

None

Attack Vector

Local

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

2020-12-22 CVE Reserved
2021-03-18 CVE Published
2023-06-10 EPSS Updated
2024-08-03 CVE Updated
2024-08-03 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

CAPEC

References (4)

URL	Tag	Source
https://github.com/ericcornelissen/shescape/releases/tag/v1.1.3	Release Notes
https://www.npmjs.com/package/shescape	Product

URL	Date	SRC
https://github.com/ericcornelissen/shescape/security/advisories/GHSA-f2rp-38vg-j3gh	2024-08-03

URL	Date	SRC
https://github.com/ericcornelissen/shescape/commit/07a069a66423809cbedd61d980c11ca44a29ea2b	2021-04-22

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Shescape Project Search vendor "Shescape Project"	Shescape Search vendor "Shescape Project" for product "Shescape"	< 1.1.3 Search vendor "Shescape Project" for product "Shescape" and version " < 1.1.3"	node.js	Affected	in	Microsoft Search vendor "Microsoft"	Windows Search vendor "Microsoft" for product "Windows"	-	-	Safe
Shescape Project Search vendor "Shescape Project"	Shescape Search vendor "Shescape Project" for product "Shescape"	< 1.1.3 Search vendor "Shescape Project" for product "Shescape" and version " < 1.1.3"	node.js	Affected	in	Opengroup Search vendor "Opengroup"	Unix Search vendor "Opengroup" for product "Unix"	-	-	Safe