CVE-2021-21282

Buffer overflow in RPL source routing header processing

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Contiki-NG is an open-source, cross-platform operating system for internet of things devices. In versions prior to 4.5, buffer overflow can be triggered by an input packet when using either of Contiki-NG's two RPL implementations in source-routing mode. The problem has been patched in Contiki-NG 4.5. Users can apply the patch for this vulnerability out-of-band as a workaround.

Contiki-NG es un sistema operativo de código abierto y multiplataforma para dispositivos del Internet de las cosas. En las versiones anteriores a 4.5, un desbordamiento del búfer puede ser desencadenado por un paquete de entrada cuando se usa cualquiera de las dos implementaciones RPL de Contiki-NG en el modo de enrutamiento de origen. El problema ha sido parcheado en Contiki-NG versión 4.5. Los usuarios pueden aplicar el parche para esta vulnerabilidad fuera de límite como solución alternativa

*Credits: N/A

CVSS Scores

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

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

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

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

CWE

CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://github.com/contiki-ng/contiki-ng/pull/1183	2021-06-24
https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-6xf2-77gf-fgjx	2021-06-24

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Contiki-ng Search vendor "Contiki-ng"		Contiki-ng Search vendor "Contiki-ng" for product "Contiki-ng"				< 4.5 Search vendor "Contiki-ng" for product "Contiki-ng" and version " < 4.5"		-		Affected