CVE-2023-48694: azure-rtos usbx Expired Pointer Dereference

Vulnerability summary

CVE-2023-48694 is a critical (CVSS 9.8) Expired Pointer Dereference vulnerability in azure-rtos usbx. EPSS estimates a 1.33% chance of exploitation in the next 30 days, higher than 70.6% of scored vulnerabilities.

Timeline

1. 05-12-2023
   PublishedVulnerability first disclosed.
2. 15-10-2024
   Last modifiedVulnerability information updated.

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.

• CWE-825Expired Pointer DereferenceThe product dereferences a pointer that contains a location for memory that was previously valid, but is no longer valid.
• CWE-843Access of Resource Using Incompatible Type ('Type Confusion')The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.