Critical severity · published Feb 23, 2024
CVE-2023-51392
Silicon Labs EFR32xxx parts with classic key storage do not use hardware accelerated AES-CCM
9.8
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 16% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EZ
Ember ZNet SDK · silabs.com
7.2.0 before 7.4.0 · source: vendor
EM
Emberznet · Silabs
7.2.0 through 7.2.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-51392
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-51392
Permissions Required
https://community.silabs.com/068Vm000001BKm6
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