Tc Mguard Rs4000 4G Vzw Vpn Firmware
CVE-2020-12523
CRITICAL
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Lifecycle Timeline
1DescriptionNVD
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
AnalysisAI
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. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Technical ContextAI
This vulnerability is classified under CWE-909. 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 Affected products include: Phoenixcontact Tc Mguard Rs4000 4G Vzw Vpn Firmware, Phoenixcontact Tc Mguard Rs4000 4G Att Vpn Firmware, Phoenixcontact Fl Mguard Rs4004 Tx\/Dtx Firmware, Phoenixcontact Fl Mguard Rs4004 Tx\/Dtx Vpn Firmware, Phoenixcontact Tc Mguard Rs4000 3G Vpn Firmware. Version information: before 8.8.3.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
An low privileged remote attacker can execute OS commands with root privileges due to improper neutralization of special
A low privileged remote attacker with write permissions can reconfigure the SNMP service due to improper input validatio
A low privileged remote attacker can read and write files as root due to improper neutralization of special elements in
A low privileged remote attacker can trigger the execution of arbitrary OS commands as root due to improper neutralizati
A low privileged remote attacker can trigger the execution of arbitrary OS commands as root due to improper neutralizati
A low privileged remote attacker can perform configuration changes of the firewall services, including packet filter, pa
A low privileged remote attacker can perform configuration changes of the firewall services, including packet filter, pa
A low privileged remote attacker can perform configuration changes of the firewall services, including packet filter, pa
A low privileged remote attacker can perform configuration changes of the firewall services, including packet forwarding
A low privileged remote attacker can perform configuration changes of the ospf service through OSPF_INTERFACE.SIMPLE_KEY
A remote, unauthenticated attacker could cause a denial-of-service of PHOENIX CONTACT FL MGUARD and TC MGUARD devices be
A low privileged remote attacker can get access to CSRF tokens of higher privileged users which can be abused to mount C
Same weakness CWE-909 – Missing Initialization of Resource
View allSame technique Information Disclosure
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External POC / Exploit Code
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