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CVE-2022-39344— Azure RTOS USBX vulnerable to buffer overflow

Quick assessment

Affected
azure-rtos usbx
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Azure RTOS USBX是Azure RTOS开源的一个 USB 主机、设备和移动 (OTG) 嵌入式堆栈。与 Azure RTOS ThreadX 完全集成，可用于所有支持 Azure RTOS ThreadX 的处理器。 Azure RTOS USBX 6.1.12之前版本存在安全漏洞，该漏洞源于USB DFU上传功能可用于引入缓冲区溢出，从而导致内存内容被覆盖，这可能允许攻击者绕过安全功能执行任意代码。

CVSS 9.8 · Critical EPSS 2.14% · P81
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I. Basic Information for CVE-2022-39344

Vulnerability Information
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Vulnerability Title
Azure RTOS USBX vulnerable to buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
Azure RTOS USBX is a USB host, device, and on-the-go (OTG) embedded stack, that is fully integrated with Azure RTOS ThreadX. Prior to version 6.1.12, the USB DFU UPLOAD functionality may be utilized to introduce a buffer overflow resulting in overwrite of memory contents. In particular cases this may allow an attacker to bypass security features or execute arbitrary code. The implementation of `ux_device_class_dfu_control_request` function prevents buffer overflow during handling of DFU UPLOAD command when current state is `UX_SYSTEM_DFU_STATE_DFU_IDLE`. This issue has been patched, please upgrade to version 6.1.12. As a workaround, add the `UPLOAD_LENGTH` check in all possible states.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
Azure RTOS USBX 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Azure RTOS USBX是Azure RTOS开源的一个 USB 主机、设备和移动 (OTG) 嵌入式堆栈。与 Azure RTOS ThreadX 完全集成，可用于所有支持 Azure RTOS ThreadX 的处理器。 Azure RTOS USBX 6.1.12之前版本存在安全漏洞，该漏洞源于USB DFU上传功能可用于引入缓冲区溢出，从而导致内存内容被覆盖，这可能允许攻击者绕过安全功能执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
azure-rtos usbx < 6.1.12 -

II. Public POCs for CVE-2022-39344

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III. Intelligence Information for CVE-2022-39344

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Vendor Advisories for CVE-2022-39344 (1)

IV. Related Vulnerabilities

Same product: usbx
Same vendor: azure-rtos
Same weakness: CWE-120

V. Comments for CVE-2022-39344

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