CVE-2024-21892

nodejs: code injection and privilege escalation through Linux capabilities

Severity Score

8.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track*

*SSVC

Descriptions

On Linux, Node.js ignores certain environment variables if those may have been set by an unprivileged user while the process is running with elevated privileges with the only exception of CAP_NET_BIND_SERVICE.
Due to a bug in the implementation of this exception, Node.js incorrectly applies this exception even when certain other capabilities have been set.
This allows unprivileged users to inject code that inherits the process's elevated privileges.

En Linux, Node.js ignora ciertas variables de entorno si pueden haber sido configuradas por un usuario sin privilegios mientras el proceso se ejecuta con privilegios elevados con la única excepción de CAP_NET_BIND_SERVICE. Debido a un error en la implementación de esta excepción, Node.js aplica incorrectamente esta excepción incluso cuando se han configurado otras capacidades. Esto permite a los usuarios sin privilegios inyectar código que hereda los privilegios elevados del proceso.

A flaw was found in Node.js. On Linux, Node.js ignores certain environment variables if an unprivileged user has set them while the process is running with elevated privileges, except for CAP_NET_BIND_SERVICE. Due to a bug in the implementation of this exception, Node.js incorrectly applies this exception even when other capabilities have been set. This flaw allows unprivileged users to inject code that inherits the process's elevated privileges.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track*

Exploitation

None

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2024-01-03 CVE Reserved
2024-02-20 CVE Published
2024-05-02 EPSS Updated
2024-08-01 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-94: Improper Control of Generation of Code ('Code Injection')

CAPEC

References (5)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2024/03/11/1
https://hackerone.com/reports/2237545
https://security.netapp.com/advisory/ntap-20240322-0003

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2024-21892	2024-04-22
https://bugzilla.redhat.com/show_bug.cgi?id=2264582	2024-04-22

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Node.js Search vendor "Node.js"		Node.js Search vendor "Node.js" for product "Node.js"				21.6.0 Search vendor "Node.js" for product "Node.js" and version "21.6.0"		en		Affected
Node.js Search vendor "Node.js"		Node.js Search vendor "Node.js" for product "Node.js"				20.11.0 Search vendor "Node.js" for product "Node.js" and version "20.11.0"		en		Affected
Node.js Search vendor "Node.js"		Node.js Search vendor "Node.js" for product "Node.js"				18.19.0 Search vendor "Node.js" for product "Node.js" and version "18.19.0"		en		Affected