CVE-2021-41278

Broken encryption in app-functions-sdk “AES” transform in EdgeX Foundry releases prior to Jakarta allows attackers to decrypt messages via unspecified vectors

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.

Category

5.7
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.08%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: edgexfoundry app-functions-sdk-go
Published at:
Updated at:

References

Link Tags
https://github.com/edgexfoundry/app-functions-sdk-go/security/advisories/GHSA-6c7m-qwxj-mvhp third party advisory
https://github.com/edgexfoundry/app-functions-sdk-go/commit/8fa13c6388ce76a6b878b54490eac61aa7d81165 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-41278?
CVE-2021-41278 has been scored as a medium severity vulnerability.
How to fix CVE-2021-41278?
To fix CVE-2021-41278, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-41278 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-41278 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-41278?
CVE-2021-41278 affects edgexfoundry app-functions-sdk-go.
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