CVE-2023-51392

Silicon Labs EFR32xxx parts with classic key storage do not use hardware accelerated AES-CCM

State: Published
Severity: 6.2 Medium
Published: Feb 23, 2024
Updated: Apr 22, 2025
Reserved: Dec 18, 2023

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Description

Ember ZNet between v7.2.0 and v7.4.0 used software AES-CCM instead of integrated hardware cryptographic accelerators, potentially increasing risk of electromagnetic and differential power analysis sidechannel attacks.

Scores

CVSS	Score	Vector	Source
3.1	6.2 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	Silabs

Weaknesses

CWE-1240 Use of a Cryptographic Primitive with a Risky Implementation

Affected Products

Product	Versions
Ember ZNet SDKsilabs.com	7.2.0 to before 7.4.0Affected

References

https://community.silabs.com/068Vm000001BKm6

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