CVE-2021-42553

Published Oct 21, 2022

Last updated 2 years ago

CVSS critical 9.8

Overview

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.
Source: vulnerability@ncsc.ch
NVD status: Modified

Risk scores

CVSS 3.1

Type: Primary
Base score: 9.8
Impact score: 5.9
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: CRITICAL

Weaknesses

nvd@nist.gov: CWE-120

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:st:stm32_mw_usb_host:-:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "1FB3C97F-2B84-4BD9-A983-04C5ED72E8F8"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

References