// For flags

CVE-2021-28362

 

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An issue was discovered in Contiki through 3.0. When sending an ICMPv6 error message because of invalid extension header options in an incoming IPv6 packet, there is an attempt to remove the RPL extension headers. Because the packet length and the extension header length are unchecked (with respect to the available data) at this stage, and these variables are susceptible to integer underflow, it is possible to construct an invalid extension header that will cause memory corruption issues and lead to a Denial-of-Service condition. This is related to rpl-ext-header.c.

Se detectó un problema en Contiki versiones hasta 3.0. Cuando se envía un mensaje de error ICMPv6 debido a opciones de encabezado de extensión no válidas en un paquete IPv6 entrante, se intenta eliminar los encabezados de extensión RPL. Debido a que la longitud del paquete y la longitud del encabezado de extensión no están marcadas (con respecto a los datos disponibles) en esta etapa, y estas variables son susceptibles de subdesbordamiento de enteros, es posible construir un encabezado de extensión no válido que causará problemas de corrupción de memoria y conllevará a una condición de denegación de servicio. Esto está relacionado con el archivo rpl-ext-header.c

*Credits: N/A
CVSS Scores
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
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-03-13 CVE Reserved
  • 2021-03-24 CVE Published
  • 2023-12-08 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-191: Integer Underflow (Wrap or Wraparound)
CAPEC
References (2)
URL Tag Source
https://github.com/contiki-os/contiki/releases Release Notes
https://www.kb.cert.org/vuls/id/815128 Third Party Advisory
URL Date SRC
URL Date SRC
URL Date SRC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Contiki-os
Search vendor "Contiki-os"
 Contiki
Search vendor "Contiki-os" for product "Contiki"
 <= 3.0
Search vendor "Contiki-os" for product "Contiki" and version " <= 3.0"
-
Affected