CVE-2022-36063

Katalog CVE

CVSS 9.8 · Critical EPSS 2,1%

Kerentanan Stack-based Buffer Overflow pada eclipse threadx usbx. Skor CVSS 3.1 9.8 (Critical) menurut NVD.

Deskripsi (NVD)

Azure RTOS USBx is a USB host, device, and on-the-go (OTG) embedded stack, fully integrated with Azure RTOS ThreadX and available for all Azure RTOS ThreadX–supported processors. Azure RTOS USBX implementation of host support for USB CDC ECM includes an integer underflow and a buffer overflow in the `_ux_host_class_cdc_ecm_mac_address_get` function which may be potentially exploited to achieve remote code execution or denial of service. Setting mac address string descriptor length to a `0` or `1` allows an attacker to introduce an integer underflow followed (string_length) by a buffer overflow of the `cdc_ecm -> ux_host_class_cdc_ecm_node_id` array. This may allow one to redirect the code execution flow or introduce a denial of service. The fix has been included in USBX release [6.1.12](https://github.com/azure-rtos/usbx/releases/tag/v6.1.12_rel). Improved mac address string descriptor length validation to check for unexpectedly small values may be used as a workaround.

Rincian

Terbit di NVD

10 Oktober 2022

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

9.8 (Critical), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-121: Stack-based Buffer Overflow
CWE-191: Integer Underflow (Wrap or Wraparound)
CWE-1284: Improper Validation of Specified Quantity in Input

EPSS (30 hari)

2,1% peluang dieksploitasi; lebih tinggi dari 81,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/azure-rtos/usbx/releases/tag/v6.1.12_rel patch · release notes · advisory pihak ketiga
• https://github.com/azure-rtos/usbx/security/advisories/GHSA-chpp-5fv9-6368 exploit · patch · advisory pihak ketiga
• https://github.com/azure-rtos/usbx/blob/master/common/usbx_host_classes/src/ux_host_class_cdc_ecm_mac_address_... exploit · advisory pihak ketiga