CVE-2021-3323

Integer Underflow in 6LoWPAN IPHC Header Uncompression in Zephyr

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Integer Underflow in 6LoWPAN IPHC Header Uncompression in Zephyr. Zephyr versions >= >=2.4.0 contain Integer Underflow (Wrap or Wraparound) (CWE-191). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc

Un Desbordamiento de Enteros en la Descompresión del Encabezado IPHC de 6LoWPAN en Zephyr. Zephyr versiones posteriores a 2.4.0 incluyéndola, contiene un desbordamiento de enteros (Wrap o Wraparound) (CWE-191). Para más información, consulte https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc

*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

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

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

2021-01-27 CVE Reserved
2021-10-12 CVE Published
2024-09-16 CVE Updated
2024-09-16 First Exploit
2024-09-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-191: Integer Underflow (Wrap or Wraparound)

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC
http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-89j6-qpxf-pfpc	2024-09-16

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
Zephyrproject Search vendor "Zephyrproject"		Zephyr Search vendor "Zephyrproject" for product "Zephyr"				>= 2.4.0 < 2.5.0 Search vendor "Zephyrproject" for product "Zephyr" and version " >= 2.4.0 < 2.5.0"		-		Affected