CVE Vulnerability

CVE-2022-29223

Azure RTOS USBX is a USB host, device, and on-the-go (OTG) embedded stack. In versions prior to 6.1.10, an attacker can cause a buffer overflow by providing the Azure RTOS USBX host stack a HUB descriptor with `bNbPorts` set to a value greater than `UX_MAX_TT` which defaults to 8. For a `bNbPorts` value of 255, the implementation of `ux_host_class_hub_descriptor_get` function will modify the contents of `hub` -> `ux_host_class_hub_device` -> `ux_device_hub_tt` array violating the end boundary by 255 - `UX_MAX_TT` items. The USB host stack needs to validate the number of ports reported by the hub, and if the value is larger than UX_MAX_TT, USB stack needs to reject the request. This fix has been included in USBX release 6.1.10.

7.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

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-2qc5-385m-x862 Release Notes Third Party Advisory
https://github.com/azure-rtos/usbx/releases/tag/v6.1.10_rel Release Notes Third Party Advisory
Configurations

Configuration 1

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

Published : 2022-05-24 03:15

Updated : 2022-06-07 04:42

NVD link : CVE-2022-29223

Mitre link : CVE-2022-29223

Products Affected
No products.
CWE
CWE-120