PT-2022-5011 · Microsoft · Azure Rtos Usbx
Szymonh
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Published
2022-10-10
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Updated
2025-10-27
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CVE-2022-36063
CVSS v2.0
8.0
High
| Vector | AV:N/AC:L/Au:S/C:P/I:P/A:C |
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.Exploit
Fix
DoS
RCE
Integer Underflow
Stack Overflow
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Related Identifiers
Affected Products
Azure Rtos Usbx