CVE-2022-39344
Last modified
CVE-2022-39344 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 1.94% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Azure Rtos Usbx | < 6.1.12 |
References
- https://github.com/azure-rtos/usbx/security/advisories/GHSA-m9p8-xrp7-vvqpExploit, Third Party Advisory
- https://github.com/azure-rtos/usbx/security/advisories/GHSA-m9p8-xrp7-vvqpExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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