title: Touchlink authentication bypass due to packets processed after timeout or out of range in Ember ZNet
description:
TouchLink packets processed after timeout or out of range due to Operation on a Resource after Expiration and Missing Release of Resource after Effective Lifetime may allow a device to be added outside of valid TouchLink range or pairing duration
This issue affects Ember ZNet 7.1.x from 7.1.3 through 7.1.5; 7.2.x from 7.2.0 through 7.2.3; Version 7.3 and later are unaffected
problem types: CWE-672 Operation on a Resource after Expiration or Release
affected:
{
defaultStatus: unaffected
modules: TouchLink
platforms: [32 bit, ARM]
product: Ember ZNet
repo: https://github.com/SiliconLabs/gecko_sdk
vendor: Silicon Labs
versions:
lessThanOrEqual: 7.1.5, status: affected, version: 7.1.3, versionType: 7.1.x
lessThanOrEqual: 7.2.3, status: affected, version: 7.2.0, versionType: 7.2.x
status: unaffected, version: 7.3.0
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 10
baseSeverity: CRITICAL
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
version: 3.1
]
format: CVSS
scenarios: GENERAL