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.
History

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: 2024-10-15T08:57:05.068Z

Updated: 2024-10-15T13:27:02.820Z

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

Link: CVE-2024-47943

cve-icon Vulnrichment

Updated: 2024-10-15T13:26:41.421Z

cve-icon NVD

Status : Awaiting Analysis

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

Modified: 2024-10-15T12:57:46.880

Link: CVE-2024-47943

cve-icon Redhat

No data.