CVE-2020-17441

Severity Score

9.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered in picoTCP 1.7.0. The code for processing the IPv6 headers does not validate whether the IPv6 payload length field is equal to the actual size of the payload, which leads to an Out-of-Bounds read during the ICMPv6 checksum calculation, resulting in either Denial-of-Service or Information Disclosure. This affects pico_ipv6_extension_headers and pico_checksum_adder (in pico_ipv6.c and pico_frame.c).

Se detectó un problema en picoTCP versión 1.7.0. El código para procesar los encabezados de IPv6 no comprueba si el campo de longitud de la carga útil de IPv6 es igual al tamaño real de la carga útil, lo que conlleva a una Lectura Fuera de Límites durante el cálculo de la suma de comprobación ICMPv6, resultando en una Denegación de Servicio o Divulgación de información. Esto afecta a las funciones pico_ipv6_extension_headers y pico_checksum_adder (en el archivo pico_ipv6.cy pico_frame.c)

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-08-07 CVE Reserved
2020-12-11 CVE Published
2023-08-27 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-125: Out-of-bounds Read

CAPEC

References (2)

URL	Tag	Source
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01	Third Party Advisory
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
Altran Search vendor "Altran"		Picotcp Search vendor "Altran" for product "Picotcp"				<= 1.7.0 Search vendor "Altran" for product "Picotcp" and version " <= 1.7.0"		-		Affected
Microchip Search vendor "Microchip"		Mplab Harmony Search vendor "Microchip" for product "Mplab Harmony"				>= 3.0.0 < 3.7.0 Search vendor "Microchip" for product "Mplab Harmony" and version " >= 3.0.0 < 3.7.0"		-		Affected