title: Phoenix Contact mGuard Devices versions before 8.8.3: LAN ports get functional after reboot even if they are disabled in the device configuration
description: On Phoenix Contact mGuard Devices versions before 8.8.3 LAN ports get functional after reboot even if they are disabled in the device configuration. For mGuard devices with integrated switch on the LAN side, single switch ports can be disabled by device configuration. After a reboot these ports get functional independent from their configuration setting: Missing Initialization of Resource
problem types: CWE-909 Missing Initialization of Resource
affected:
{
product: TC MGUARD RS4000 4G VZW VPN (1010461)
vendor: Phoenix Contact
versions:
lessThan: 8.8.3, status: affected, version: unspecified, versionType: custom
}
{
product: TC MGUARD RS4000 4G ATT VPN (1010463)
vendor: Phoenix Contact
versions:
lessThan: 8.8.3, status: affected, version: unspecified, versionType: custom
}
{
product: FL MGUARD RS4004 TX/DTX (2701876)
vendor: Phoenix Contact
versions:
lessThan: 8.8.3, status: affected, version: unspecified, versionType: custom
}
{
product: FL MGUARD RS4004 TX/DTX VPN (2701877)
vendor: Phoenix Contact
versions:
lessThan: 8.8.3, status: affected, version: unspecified, versionType: custom
}
{
product: TC MGUARD RS4000 3G VPN (2903440)
vendor: Phoenix Contact
versions:
lessThan: 8.8.3, status: affected, version: unspecified, versionType: custom
}
{
product: TC MGUARD RS4000 4G VPN (2903586)
vendor: Phoenix Contact
versions:
lessThan: 8.8.3, status: affected, version: unspecified, versionType: custom
}
{
product: Innominate mGuard rs4000 4TX/TX
vendor: Innominate
versions:
lessThan: 8.8.3, status: affected, version: unspecified, versionType: custom
}
{
product: Innominate mGuard rs4000 4TX/TX VPN
vendor: Innominate
versions:
lessThan: 8.8.3, status: affected, version: unspecified, versionType: custom
}
{
product: Innominate mGuard rs4000 4TX/3G/TX VPN
vendor: Innominate
versions:
lessThan: 8.8.3, status: affected, version: unspecified, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: LOW
baseScore: 5.4
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
version: 3.1
]
solutions: PHOENIX CONTACT recommends all mGuard users to upgrade to the firmware version 8.8.3.
workarounds: Instead of deactivating by configuration, network cables should be detached from affected switch ports.