CVE-2021-34259 — MEDIUM (6.8)

Q: What is CVE-2021-34259?

CVE-2021-34259 is a vulnerability with a CVSS score of 6.8 (MEDIUM). A buffer overflow vulnerability in the USBH_ParseCfgDesc() function of STMicroelectronics STM32Cube Middleware v1.8.0 and below allows attackers to execute arbitrary code.

Q: How severe is CVE-2021-34259?

CVE-2021-34259 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2021-34259?

Check the references section above for vendor advisories and patch information. Affected products include: St Stm32Cube Middleware, St Stm32H7B3.

Vulnerability Description

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

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	Stm32Cube Middleware	<= 1.8.0
St	Stm32H7B3	-

Related Weaknesses (CWE)

CWE-120

References

https://github.com/STMicroelectronics/STM32CubeH7/issues/76ExploitThird Party Advisory
https://github.com/STMicroelectronics/STM32CubeH7/issues/76ExploitThird Party Advisory

FAQ

What is CVE-2021-34259?

CVE-2021-34259 is a vulnerability with a CVSS score of 6.8 (MEDIUM). A buffer overflow vulnerability in the USBH_ParseCfgDesc() function of STMicroelectronics STM32Cube Middleware v1.8.0 and below allows attackers to execute arbitrary code.

How severe is CVE-2021-34259?

CVE-2021-34259 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-2021-34259?

Check the references section above for vendor advisories and patch information. Affected products include: St Stm32Cube Middleware, St Stm32H7B3.