title: Potential Timing vulnerability in CBC PKCS7 padding calculations
description: An Observable Timing Discrepancy, Covert Timing Channel vulnerability in Silabs GSDK on ARM potentially allows Padding Oracle Crypto Attack on CBC PKCS7.This issue affects GSDK: through 4.4.0.
problem types: CWE-208 Observable Timing Discrepancy
affected:
{
defaultStatus: affected
platforms: ARM
product: GSDK
repo: https://github.com/SiliconLabs/gecko_sdk/releases
vendor: silabs.com
versions:
lessThan: 4.4.0, status: affected, version: 0, versionType: LessThan
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: PHYSICAL
availabilityImpact: NONE
baseScore: 4.6
baseSeverity: MEDIUM
confidentialityImpact: HIGH
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
version: 3.1
]
format: CVSS
scenarios: GENERAL