CVE-2022-36063
CVSS v3
9.8
CRITICAL
Score EPSS
4.2 %
probabilité d’exploitation
CISA KEV
Non
exploitation connue
Exploitation
—
statut SSVC
Description
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.
Détails techniques
- Publiée le
- 2022-10-10
Questions fréquentes
Qu’est-ce que CVE-2022-36063 ?
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.
CVE-2022-36063 est-elle activement exploitée ?
Aucune exploitation active de CVE-2022-36063 n’est confirmée. Le score EPSS est de 4.2 %, soit la probabilité estimée d’exploitation dans les 30 prochains jours.
Quel est le score CVSS de CVE-2022-36063 ?
CVE-2022-36063 a un score de base CVSS v3 de 9.8 (gravité CRITICAL).
CVE-2022-36063 touche-t-elle votre environnement ?
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Classées par probabilité d’exploitation (EPSS).