CVE-2021-41278

MEDIUM

EdgeX Foundry app-functions-sdk-go < 2.1.0 - Use of a Broken or Risky Cryptographic Algorithm in AES Transform

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-41278. PoCs published by FDlucifer.

AI-analyzed exploit summary This repository contains a Python script for scanning Metabase instances vulnerable to CVE-2021-41277, an arbitrary file read vulnerability. The script checks for the presence of the vulnerability by attempting to read /etc/passwd via an API endpoint.

Description

Functions SDK for EdgeX is meant to provide all the plumbing necessary for developers to get started in processing/transforming/exporting data out of the EdgeX IoT platform. In affected versions broken encryption in app-functions-sdk “AES” transform in EdgeX Foundry releases prior to Jakarta allows attackers to decrypt messages via unspecified vectors. The app-functions-sdk exports an “aes” transform that user scripts can optionally call to encrypt data in the processing pipeline. No decrypt function is provided. Encryption is not enabled by default, but if used, the level of protection may be less than the user may expects due to a broken implementation. Version v2.1.0 (EdgeX Foundry Jakarta release and later) of app-functions-sdk-go/v2 deprecates the “aes” transform and provides an improved “aes256” transform in its place. The broken implementation will remain in a deprecated state until it is removed in the next EdgeX major release to avoid breakage of existing software that depends on the broken implementation. As the broken transform is a library function that is not invoked by default, users who do not use the AES transform in their processing pipelines are unaffected. Those that are affected are urged to upgrade to the Jakarta EdgeX release and modify processing pipelines to use the new "aes256" transform.

Exploits (1)

nomisec SCANNER 1 stars
by FDlucifer · poc
https://github.com/FDlucifer/CVE-2021-41278

This repository contains a Python script for scanning Metabase instances vulnerable to CVE-2021-41277, an arbitrary file read vulnerability. The script checks for the presence of the vulnerability by attempting to read /etc/passwd via an API endpoint.

Classification
Scanner 90%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Metabase versions < 0.40.5 and >= 1.0.0, < 1.40.5
No auth needed
Prerequisites: Network access to the target Metabase instance
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Scores

CVSS v3 5.7
EPSS 0.0006
EPSS Percentile 18.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

Details

CWE
CWE-327
Status published
Products (6)
edgexfoundry/app-functions-sdk-go 0Go
edgexfoundry/app-functions-sdk-go 0 - 2.1.0Go
edgexfoundry/app-service-configurable 0 - 2.1.0Go
edgexfoundry/app_service_configurable < 2.1.0
edgexfoundry/application_functions_software_development_kit < 2.1.0
edgexfoundry/edgex_foundry < 2.1.0
Published Nov 19, 2021
Tracked Since Feb 18, 2026