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Eclipse ThreadX NetX Duo HTTP Component server denial of service

Moderate
mrybczyn published GHSA-f42f-6fvv-xqx3 Apr 6, 2025

Package

NetX Duo (Eclipse ThreadX)

Affected versions

<= 6.4.2

Patched versions

6.4.3

Description

Summary

A denial of service vulnerability exists in the NetX HTTP component server functionality of Eclipse ThreadX NetX Duo git commit 6c8e9d1. A specially crafted network packet can lead to denial of service. An attacker can send a malicious packet to trigger this vulnerability.

Details

Summary

A denial of service vulnerability exists in the NetX HTTP server functionality of Eclipse ThreadX NetX Duo git commit 6c8e9d1. A specially crafted network packet can lead to denial of service. An attacker can send a malicious packet to trigger this vulnerability.

Confirmed Vulnerable Versions

The versions below were either tested or verified to be vulnerable by Talos or confirmed to be vulnerable by the vendor.

Eclipse ThreadX NetX Duo git commit 6c8e9d1

Product URLs

Eclipse ThreadX NetX Duo - https://github.com/eclipse-threadx/netxduo

Details

Eclipse ThreadX NetX Duo is an industrial-grade TCP/IP network stack tailored specifically for deeply embedded real-time and IoT applications. Eclipse ThreadX NetX Duo offers a dual network stack supporting both IPv4 and IPv6

While processing an HTTP PUT request, the HTTP server will create the requested file and open it for writing. If an error occurs after the file is opened, the file is not properly closed. After that, any subsequent HTTP requests involving a file resource will result in the server responding with a 404 file not found error. This vulnerability affects both HTTP server implementations within NetX Duo.

This is the same issue as reported in GHSA-pwf8-5q9w-m763

The fix in c78d650 was incomplete and did not include the Component HTTP server. The complete fix is in fb3195b

NetX Duo Component HTTP server

This vulnerability affects the NetX Duo Component HTTP Server implementation which can be found in netxduo\addons\http\nxd_http_server.c

Mitigation

Developers can disable the processing of PUT requests by ending the processing of a PUT request in an application callback request notify function.

Credit

Discovered by Kelly Patterson of Cisco Talos.

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVE ID

CVE-2025-2260

Weaknesses

No CWEs

Credits