What is the severity of ZDI-24-873?

ZDI-24-873 has a high severity rating due to its ability to allow arbitrary code execution without authentication.

How do I fix ZDI-24-873?

To mitigate ZDI-24-873, it is recommended to update the Silicon Labs Gecko OS to the latest version that addresses this vulnerability.

Who is affected by ZDI-24-873?

ZDI-24-873 affects installations of Silicon Labs Gecko OS that are susceptible to exploitation through manipulated HTTP GET requests.

What type of attackers can exploit ZDI-24-873?

Network-adjacent attackers can exploit ZDI-24-873 without requiring any form of authentication.

What is the specific flaw in ZDI-24-873?

The specific flaw in ZDI-24-873 lies in the improper handling of HTTP GET requests, leading to the potential execution of arbitrary code.

Vulnerability/
ZDI-24-873

high

8.8

21/6/2024

12/2/2025

ZDI-24-873: (Pwn2Own) Silicon Labs Gecko OS HTTP GET Request Handling Stack-based Buffer Overflow Remote Code Execution Vulnerability

First published: Fri Jun 21 2024(Updated: )

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.

Affected Software	Affected Version	How to fix
SiLabs Gecko SDK
SiLabs Gecko SDK

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Frequently Asked Questions

What is the severity of ZDI-24-873?
ZDI-24-873 has a high severity rating due to its ability to allow arbitrary code execution without authentication.
How do I fix ZDI-24-873?
To mitigate ZDI-24-873, it is recommended to update the Silicon Labs Gecko OS to the latest version that addresses this vulnerability.
Who is affected by ZDI-24-873?
ZDI-24-873 affects installations of Silicon Labs Gecko OS that are susceptible to exploitation through manipulated HTTP GET requests.
What type of attackers can exploit ZDI-24-873?
Network-adjacent attackers can exploit ZDI-24-873 without requiring any form of authentication.
What is the specific flaw in ZDI-24-873?
The specific flaw in ZDI-24-873 lies in the improper handling of HTTP GET requests, leading to the potential execution of arbitrary code.

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alias/ZDI-CAN-23396
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collector/zdi-advisory
alias/ZDI-24-873
alias/CVE-2024-23973
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agent/software-canonical-lookup-request
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vendor/silicon labs
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