// For flags

CVE-2022-29223

Buffer overflow on HUB descriptor in Azure RTOS USBX

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Azure RTOS USBX es una pila insertada de host USB, dispositivo y on-the-go (OTG). En versiones anteriores a 6.1.10, un atacante puede causar un desbordamiento del búfer proporcionando a la pila del host Azure RTOS USBX un descriptor HUB con "bNbPorts" establecido en un valor mayor que "UX_MAX_TT", que por defecto es 8. Para un valor de "bNbPorts" de 255, la implementación de la función "ux_host_class_hub_descriptor_get" modificará el contenido del array "hub" -) "ux_host_class_hub_device" -) "ux_device_hub_tt" violando el límite final en 255 - "UX_MAX_TT" elementos. La pila del host USB necesita comprobar el número de puertos reportados por el hub, y si el valor es mayor que UX_MAX_TT, la pila USB necesita rechazar la petición. Esta corrección se ha incluido en versión 6.1.10 de USBX

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-04-13 CVE Reserved
  • 2022-05-24 CVE Published
  • 2024-06-06 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Microsoft
Search vendor "Microsoft"
 Azure Rtos Usbx
Search vendor "Microsoft" for product "Azure Rtos Usbx"
 < 6.1.10
Search vendor "Microsoft" for product "Azure Rtos Usbx" and version " < 6.1.10"
-
Affected