CVE-2024-23973
Published: 31 January 2025
Description
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Silicon Labs Gecko OS. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of HTTP GET requests. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the device.
Security Summary
CVE-2024-23973 is a stack-based buffer overflow vulnerability (CWE-120) in Silicon Labs Gecko OS, stemming from inadequate validation of the length of user-supplied data in HTTP GET request handling before copying it to a stack-based buffer. This flaw affects installations of the Gecko OS, enabling network-adjacent attackers to execute arbitrary code in the context of the device without requiring authentication. The vulnerability carries a CVSS v3.1 base score of 8.8 (AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), indicating high severity due to its potential for confidentiality, integrity, and availability impacts.
Network-adjacent attackers, positioned on the same local network segment as the affected device, can exploit this vulnerability by sending crafted HTTP GET requests. No privileges or user interaction are needed, allowing low-complexity exploitation that grants remote code execution on the device itself.
Silicon Labs and Zero Day Initiative have published advisories detailing the issue, available at https://community.silabs.com/a45Vm0000000Atp and https://www.zerodayinitiative.com/advisories/ZDI-24-873/, respectively, which security practitioners should consult for patch information and mitigation guidance.
Details
- CWE(s)