Silabs Series 2 SoC ECDH/EdDSA power side-channel

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.9$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Silabs Series 2 SoC. Affected by this vulnerability is an unknown functionality of the component ECDH/EdDSA. Executing a manipulation can lead to power side-channel. This vulnerability is handled as CVE-2025-3301. The physical device can be targeted for the attack. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Silabs Series 2 SoC (the affected version unknown) and classified as problematic. This vulnerability affects an unknown part of the component ECDH/EdDSA. The manipulation with an unknown input leads to a power side-channel vulnerability. The CWE definition for the vulnerability is CWE-1255. 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at community.silabs.com. This vulnerability was named CVE-2025-3301 since 04/04/2025. The exploitation appears to be difficult. Local access is required to approach this attack. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 3.9
VulDB Meta Temp Score: 3.9

VulDB Base Score: 3.9
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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VulDB Reliability: 🔍

Exploitinginfo

Class: Power side-channel
CWE: CWE-1255 / CWE-203 / CWE-200
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/04/2025 🔍
04/29/2025 +25 days 🔍
04/29/2025 +0 days 🔍
05/02/2025 +3 days 🔍

Sourcesinfo

Advisory: community.silabs.com
Status: Confirmed

CVE: CVE-2025-3301 (🔍)
GCVE (CVE): GCVE-0-2025-3301
GCVE (VulDB): GCVE-100-306526

Entryinfo

Created: 04/29/2025 16:42
Updated: 05/02/2025 16:29
Changes: 04/29/2025 16:42 (63), 05/02/2025 16:29 (1)
Complete: 🔍
Cache ID: 216::103

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