CVE-2021-42553 — MEDIUM (6.8)

Vulnerability Description

A buffer overflow vulnerability in stm32_mw_usb_host of STMicroelectronics in versions before 3.5.1 allows an attacker to execute arbitrary code when the descriptor contains more endpoints than USBH_MAX_NUM_ENDPOINTS. The library is typically integrated when using a RTOS such as FreeRTOS on STM32 MCUs.

CVSS Score

6.8

MEDIUM

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

PHYSICAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
St	Stm32 Mw Usb Host	-

Related Weaknesses (CWE)

CWE-120

References

https://github.com/STMicroelectronics/stm32_mw_usb_host
https://github.com/STMicroelectronics/stm32_mw_usb_host/pull/4PatchThird Party Advisory
https://github.com/STMicroelectronics/stm32_mw_usb_host
https://github.com/STMicroelectronics/stm32_mw_usb_host/pull/4PatchThird Party Advisory

FAQ

What is CVE-2021-42553?

CVE-2021-42553 is a vulnerability with a CVSS score of 6.8 (MEDIUM). A buffer overflow vulnerability in stm32_mw_usb_host of STMicroelectronics in versions before 3.5.1 allows an attacker to execute arbitrary code when the descriptor contains more endpoints than USBH_M...

How severe is CVE-2021-42553?

CVE-2021-42553 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-42553?

Check the references section above for vendor advisories and patch information. Affected products include: St Stm32 Mw Usb Host.