CVE-2021-43803

Unexpected server crash in Next.js

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Next.js is a React framework. In versions of Next.js prior to 12.0.5 or 11.1.3, invalid or malformed URLs could lead to a server crash. In order to be affected by this issue, the deployment must use Next.js versions above 11.1.0 and below 12.0.5, Node.js above 15.0.0, and next start or a custom server. Deployments on Vercel are not affected, along with similar environments where invalid requests are filtered before reaching Next.js. Versions 12.0.5 and 11.1.3 contain patches for this issue.

Next.js es un framework de React. En las versiones de Next.js anteriores a 12.0.5 o 11.1.3, las direcciones URL no válidas o malformadas podrían conllevar a un bloqueo del servidor. Para verse afectado por este problema, el despliegue debe usar versiones de Next.js superiores a 11.1.0 y anteriores a 12.0.5, Node.js versiones posteriores a 15.0.0, y el siguiente inicio o un servidor personalizado. Los despliegues en Vercel no están afectados, junto con entornos similares en los que las peticiones no válidas son filtradas antes de llegar a Next.js. Las versiones 12.0.5 y 11.1.3 contienen parches para este problema

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-11-16 CVE Reserved
2021-12-09 CVE Published
2024-08-04 CVE Updated
2024-08-24 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (5)

URL	Tag	Source
https://github.com/vercel/next.js/releases/tag/v11.1.3	Release Notes
https://github.com/vercel/next.js/releases/v12.0.5	Release Notes

URL	Date	SRC

URL	Date	SRC
https://github.com/vercel/next.js/commit/6d98b4fb4315dec1badecf0e9bdc212a4272b264	2024-03-12
https://github.com/vercel/next.js/pull/32080	2024-03-12
https://github.com/vercel/next.js/security/advisories/GHSA-25mp-g6fv-mqxx	2024-03-12

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Vercel Search vendor "Vercel"	Next.js Search vendor "Vercel" for product "Next.js"	>= 11.1.0 < 11.1.3 Search vendor "Vercel" for product "Next.js" and version " >= 11.1.0 < 11.1.3"	node.js	Affected	in	Nodejs Search vendor "Nodejs"	Node.js Search vendor "Nodejs" for product "Node.js"	> 15.0.0 Search vendor "Nodejs" for product "Node.js" and version " > 15.0.0"	-	Safe
Vercel Search vendor "Vercel"	Next.js Search vendor "Vercel" for product "Next.js"	>= 12.0.0 < 12.0.5 Search vendor "Vercel" for product "Next.js" and version " >= 12.0.0 < 12.0.5"	node.js	Affected	in	Nodejs Search vendor "Nodejs"	Node.js Search vendor "Nodejs" for product "Node.js"	> 15.0.0 Search vendor "Nodejs" for product "Node.js" and version " > 15.0.0"	-	Safe