CVE-2023-48694
Published: 05 December 2023
Summary
CVE-2023-48694 is a medium-severity Expired Pointer Dereference (CWE-825) vulnerability in Eclipse Threadx Usbx. Its CVSS base score is 6.8 (Medium).
Operationally, ranked in the top 8.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Azure RTOS USBX is a USB host, device, and OTG embedded stack integrated with Azure RTOS ThreadX. Versions 6.2.1 and below contain expired pointer dereference and type confusion vulnerabilities (CWE-825 and CWE-843) in the host stack and host class components. The affected functions relate to device-linked classes including ASIX, Prolific, SWAR, audio, and CDC ECM, and these flaws enable remote code execution.
An attacker can exploit the issues to achieve code execution with high impact on confidentiality, integrity, and availability. The CVSS 3.1 score of 6.8 reflects an attack vector requiring physical access, low attack complexity, and no privileges or user interaction.
The GitHub security advisory for this CVE states that fixes are included in USBX release 6.3.0 and recommends that users upgrade, noting there are no known workarounds. The associated EPSS score has remained flat at a peak of 0.0745 with no material rise after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-52738
Vulnerability details
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…
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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(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.