CVE-2020-12521 - Vulnerability Details - OpenCVE

On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS a specially crafted LLDP packet may lead to a high system load in the PROFINET stack. An attacker can cause failure of system services or a complete reboot.

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Adjacent Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Complete

This CVE is not in the KEV list.

The EPSS score is 0.00084.

Key SSVC decision points have not yet been added.

Vendors	Products
Phoenixcontact Subscribe	Axc F 1152 Subscribe Axc F 2152 Subscribe Axc F 2152 Starterkit Subscribe Axc F 3152 Subscribe Plcnext Firmware Subscribe Plcnext Technology Starterkit Subscribe Rfc 4072s Subscribe

Configuration 1 [-]

AND

cpe:2.3:o:phoenixcontact:plcnext_firmware:*:*:*:*:long_term_support:*:*:*

cpe:2.3:h:phoenixcontact:axc_f_1152:-:*:*:*:*:*:*:*

Configuration 2 [-]

AND

cpe:2.3:o:phoenixcontact:plcnext_firmware:*:*:*:*:long_term_support:*:*:*

cpe:2.3:h:phoenixcontact:axc_f_2152:-:*:*:*:*:*:*:*

Configuration 3 [-]

AND

cpe:2.3:o:phoenixcontact:plcnext_firmware:*:*:*:*:long_term_support:*:*:*

cpe:2.3:h:phoenixcontact:axc_f_3152:-:*:*:*:*:*:*:*

Configuration 4 [-]

AND

cpe:2.3:o:phoenixcontact:plcnext_firmware:*:*:*:*:long_term_support:*:*:*

cpe:2.3:h:phoenixcontact:rfc_4072s:-:*:*:*:*:*:*:*

Configuration 5 [-]

AND

cpe:2.3:o:phoenixcontact:plcnext_firmware:*:*:*:*:long_term_support:*:*:*

cpe:2.3:h:phoenixcontact:axc_f_2152_starterkit:-:*:*:*:*:*:*:*

Configuration 6 [-]

AND

cpe:2.3:o:phoenixcontact:plcnext_firmware:*:*:*:*:long_term_support:*:*:*

cpe:2.3:h:phoenixcontact:plcnext_technology_starterkit:-:*:*:*:*:*:*:*

No data.

No data.

Advisories

Source	ID	Title
EUVD	EUVD-2020-4823	On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS a specially crafted LLDP packet may lead to a high system load in the PROFINET stack. An attacker can cause failure of system services or a complete reboot.

Fixes

Solution

Phoenix Contact recommends affected users to upgrade to the current Firmware 2021.0 LTS or higher which fixes these vulnerabilities.

Workaround

Phoenix Contact recommends operating network-capable devices in closed networks or protected with a suitable firewall. For detailed information on our recommendations for measures to protect network-capable devices, please refer to the Phoenix Contact application note.

References

Link	Providers
https://cert.vde.com/en-us/advisories/vde-2020-049

History

No history.

Projects

Sign in to view the affected projects.

MITRE

Status: PUBLISHED

Assigner: CERTVDE

Published: 2020-12-17T22:43:14.654841Z

Updated: 2024-09-17T04:14:26.064Z

Reserved: 2020-04-30T00:00:00

Link: CVE-2020-12521

Vulnrichment

No data.

NVD

Status : Modified

Published: 2020-12-17T23:15:13.137

Modified: 2024-11-21T04:59:51.477

Link: CVE-2020-12521

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-20

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