CVE-2024-47943 json
Improper signature verification of firmware upgrade files
published 2024-10-15 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-42735
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 50%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
0.64% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- RITTAL GmbH & Co. KG IoT Interface & CMC III Processing Unit
Classification
- Weakness
-
- CWE-347 Improper Verification of Cryptographic Signature
References
-
rittal.com
/de-de/products/deep/3124300
patch
-
r.sec-consult.com
/rittaliot
third-party-advisory
- seclists.org /fulldisclosure/2024/Oct/4
Sources
- CVE List CVE-2024-47943
- NVD CVE-2024-47943
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