CVE-2023-48694 Azure RTOS USBX Remote Code Execution Vulnerability

Medium 6.8 Published 5 Dec 2023 Updated 15 Oct 2024

Attackers can achieve remote code execution in Azure RTOS USBX via expired pointer dereference and type confusion flaws in the host stack.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-48694?

CVE-2023-48694 is a medium-severity use after free vulnerability in azure-rtos usbx, published on 5 Dec 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Azure RTOS USBX is a USB host, device, and on-the-go (OTG) embedded stack, that is fully integrated with Azure RTOS ThreadX. An attacker can cause remote code execution due to expired pointer dereference and type confusion vulnerabilities in Azure RTOS USBX. The affected components include functions/processes in host stack and host class, related to device linked classes, ASIX, Prolific, SWAR, audio, CDC ECM in RTOS v6.2.1 and below. The fixes have been included in USBX release 6.3.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Weakness: CWE-843, CWE-825

Which versions are affected by CVE-2023-48694?

It affects 1 product.

Products include Eclipse Threadx Usbx.

How do I fix CVE-2023-48694?

No fix has been published for CVE-2023-48694 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2023-48694 being exploited?

There is no known exploitation of CVE-2023-48694 in the wild and no public exploit code.

Sources

Also known as GHSA-qjw8-7w86-44qj.