CVE-2021-34259

Severity Score

6.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A buffer overflow vulnerability in the USBH_ParseCfgDesc() function of STMicroelectronics STM32Cube Middleware v1.8.0 and below allows attackers to execute arbitrary code.

Una vulnerabilidad de desbordamiento de búfer en la función USBH_ParseCfgDesc() de STMicroelectronics STM32Cube Middleware versiones v1.8.0 y por debajo, permite a atacantes ejecutar código arbitrario

*Credits: N/A

Attack Vector

Physical

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

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

2021-06-07 CVE Reserved
2021-07-22 CVE Published
2024-08-04 CVE Updated
2024-08-04 First Exploit
2024-11-24 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

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

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC
https://github.com/STMicroelectronics/STM32CubeH7/issues/76	2024-08-04

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
St Search vendor "St"	Stm32cube Middleware Search vendor "St" for product "Stm32cube Middleware"	<= 1.8.0 Search vendor "St" for product "Stm32cube Middleware" and version " <= 1.8.0"	-	Affected	in	St Search vendor "St"	Stm32h7b3 Search vendor "St" for product "Stm32h7b3"	-	-	Safe