CVE-2022-36063

Name of the Vulnerable Software and Affected Versions Azure RTOS USBX versions prior to 6.1.12

Description The issue is related to a buffer overflow and integer underflow in the Azure RTOS USBX implementation of host support for USB CDC ECM, specifically in the ux host class cdc ecm mac address get function. This may allow a remote attacker to execute arbitrary code or cause a denial of service by setting the mac address string descriptor length to 0 or 1, introducing an integer underflow followed by a buffer overflow of the cdc ecm -> ux host class cdc ecm node id array.

Recommendations For Azure RTOS USBX versions prior to 6.1.12, update to version 6.1.12 or later to resolve the issue. As a temporary workaround, improved mac address string descriptor length validation to check for unexpectedly small values may be used. Consider restricting access to the ux host class cdc ecm mac address get function until the update is applied.