CVE-2022-36063

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Summary

CVECVE-2022-36063
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-10-10 21:15:00 UTC
Updated2023-06-29 16:17:00 UTC
DescriptionAzure 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.

Risk And Classification

Problem Types: CWE-1284

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Microsoft Azure Rtos Usbx All All All All

References

ReferenceSourceLinkTags
USBX Host CDC ECD integer underflow with buffer overflow · Advisory · azure-rtos/usbx · GitHub CONFIRM github.com
usbx/ux_host_class_cdc_ecm_mac_address_get.c at master · azure-rtos/usbx · GitHub MISC github.com
Release Azure RTOS 6.1.12 · azure-rtos/usbx · GitHub MISC github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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