Cyber Resilience

CVE-2023-36610

Medium

Published: 03 July 2023

Published
03 July 2023
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS Score 0.0014 34.3th percentile
Risk Priority 12 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-36610 is a medium-severity Insufficient Entropy (CWE-331) vulnerability in Ovarro Tbox Ms-Cpu32 Firmware. Its CVSS base score is 5.9 (Medium).

Operationally, ranked at the 34.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

​The affected TBox RTUs generate software security tokens using insufficient entropy. The random seed used to generate the software tokens is not initialized correctly, and other parts of the token are generated using predictable time-based values. An attacker with this…

more

knowledge could successfully brute force the token and authenticate themselves.

CWE(s)
CWE-331

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

ovarro
tbox ms-cpu32 firmware
≤ 1.50.598
ovarro
tbox ms-cpu32-s2 firmware
≤ 1.50.598
ovarro
tbox lt2 firmware
≤ 1.50.598
ovarro
tbox tg2 firmware
≤ 1.50.598
ovarro
tbox rm2 firmware
≤ 1.50.598

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-12 Cryptographic Key Establishment and Management
addresses: CWE-331

Approved key-establishment methods mandate sufficient entropy during key generation, eliminating entropy-starved keys.

References