The firmware upgrade function in the admin web interface of the Rittal IoT Interface & CMC III Processing Unit devices checks if
the patch files are signed before executing the containing run.sh
script. The signing process is kind of an HMAC with a long string as key
which is hard-coded in the firmware and is freely available for
download. This allows crafting malicious "signed" .patch files in order
to compromise the device and execute arbitrary code.
Advisories
Source ID Title
EUVD EUVD EUVD-2024-42735 The firmware upgrade function in the admin web interface of the Rittal IoT Interface & CMC III Processing Unit devices checks if the patch files are signed before executing the containing run.sh script. The signing process is kind of an HMAC with a long string as key which is hard-coded in the firmware and is freely available for download. This allows crafting malicious "signed" .patch files in order to compromise the device and execute arbitrary code.
Fixes

Solution

The vendor provides a patched version V6.21.00.2 which can be downloaded from the following URL:  www.rittal.com/de-de/products/deep/3124300 https://www.rittal.com/de-de/products/deep/3124300


Workaround

No workaround given by the vendor.

History

Mon, 03 Nov 2025 23:30:00 +0000

Type Values Removed Values Added
References

Fri, 11 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00183}

epss

{'score': 0.00204}


Mon, 17 Mar 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Tue, 15 Oct 2024 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 15 Oct 2024 09:15:00 +0000

Type Values Removed Values Added
Description The firmware upgrade function in the admin web interface of the Rittal IoT Interface & CMC III Processing Unit devices checks if the patch files are signed before executing the containing run.sh script. The signing process is kind of an HMAC with a long string as key which is hard-coded in the firmware and is freely available for download. This allows crafting malicious "signed" .patch files in order to compromise the device and execute arbitrary code.
Title Improper signature verification of firmware upgrade files
Weaknesses CWE-347
References

cve-icon MITRE

Status: PUBLISHED

Assigner: SEC-VLab

Published:

Updated: 2025-11-03T22:21:53.100Z

Reserved: 2024-10-07T13:39:52.543Z

Link: CVE-2024-47943

cve-icon Vulnrichment

Updated: 2025-11-03T22:21:53.100Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-10-15T09:15:03.357

Modified: 2025-11-03T23:16:23.247

Link: CVE-2024-47943

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.