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.

CVSS v3.0 9.8 CRITICAL

9.8^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/azure-rtos/usbx/security/advisories/GHSA-chpp-5fv9-6368	Exploit Patch Third Party Advisory
https://github.com/azure-rtos/usbx/releases/tag/v6.1.12_rel	Patch Release Notes Third Party Advisory
https://github.com/azure-rtos/usbx/blob/master/common/usbx_host_classes/src/ux_host_class_cdc_ecm_mac_address_get.c#L264	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:microsoft:azure_rtos_usbx:*:*:*:*:*:*:*:*

History

29 Jun 2023, 16:17

Type	Values Removed	Values Added
CWE	CWE-191 CWE-121	CWE-1284

Information

Published : 2022-10-10 21:15

Updated : 2023-06-29 16:17

NVD link : CVE-2022-36063

Mitre link : CVE-2022-36063

JSON object : View

Products Affected

microsoft

azure_rtos_usbx

CWE

CWE-1284

Improper Validation of Specified Quantity in Input

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