CVE-2021-34268 : An issue in the USBH_ParseDevDesc() function of STMicroelectronics STM32Cube Mid

An issue in the USBH_ParseDevDesc() function of STMicroelectronics STM32Cube Middleware v1.8.0 and below causes a denial of service (DOS) via a malformed USB device packet.

Published 2021-07-22 20:15:08

Updated 2021-08-03 13:44:42

Source MITRE

View at NVD, CVE.org

Vulnerability category: Denial of service

Products affected by CVE-2021-34268

ST » Stm32cube Middleware
Versions up to, including, (<=) 1.8.0
cpe:2.3:a:st:stm32cube_middleware:*:*:*:*:*:*:*:*
Matching versions
When used together with: ST » Stm32h7b3 » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2021-34268

EPSS FAQ

0.06%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 23 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-34268

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
2.1	LOW	AV:L/AC:L/Au:N/C:N/I:N/A:P	3.9	2.9	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
4.6	MEDIUM	CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	0.9	3.6	NIST
Attack Vector: Physical Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

References for CVE-2021-34268

https://github.com/STMicroelectronics/STM32CubeH7/issues/75

No validity chekcing on the variable dev_desc->bMaxPacketSize · Issue #75 · STMicroelectronics/STM32CubeH7 · GitHub
Exploit;Third Party Advisory

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Vulnerability Details : CVE-2021-34268

Products affected by CVE-2021-34268

Exploit prediction scoring system (EPSS) score for CVE-2021-34268

CVSS scores for CVE-2021-34268

References for CVE-2021-34268