CVE-2025-3301
DPA countermeasures are unavailable for ECDH key agreement and EdDSA signing operations on Curve25519 and Curve448 on all Series 2 modules and SoCs due to a lack of hardware and software support. A successful DPA attack may result in exposure of confidential information. The best practice is to use the impacted crypto curves and operations with ephemeral keys to reduce the number of DPA traces that can be collected.
https://nvd.nist.gov/vuln/detail/CVE-2025-3301
Categories
CWE-1255 : Comparison Logic is Vulnerable to Power Side-Channel Attacks
A device's real time power consumption may be monitored during security token evaluation and the information gleaned may be used to determine the value of the reference token. The design phase must consider each check of a security token against a standard and the amount of power consumed during the check of a good token versus a bad token. The alternative is an all at once check where a retry counter is incremented PRIOR to the check. Another potential mitigation is to parallelize shifting of secret data (see example 2 below). Note that the wider the bus the more effective the result. An additional potential mitigation is to add random data to each crypto operation then subtract it out afterwards. This is highly effective but costly in performance, area, and power consumption. It also requires a random number generator. If the architecture is unable to prevent the attack, using filtering components may reduce the ability to implement an attack, however, consideration must be given to the physical removal of the filter elements. During integration, avoid use of a single secret for an extended period (e.g. frequent key updates). This limits the amount of data compromised but at the cost of complexity of use. CMAC verification vulnerable to timing and power attacks.
References
product-security@silabs.com
CPE
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REMEDIATION
EXPLOITS
Exploit-db.com
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POC Github
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Other Nist (github, ...)
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CAPEC
Common Attack Pattern Enumerations and Classifications
id | description | severity |
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189 | Black Box Reverse Engineering |
Low |
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