Global infos:

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.

CVE Status: Awaiting Analysis

References:

551230f0-3615-47bd-b7cc-93e92e730bbf

551230f0-3615-47bd-b7cc-93e92e730bbf

Metrics:

No CVSS data available

Links:

Exploit-db
Github