NVD

CVE-2021-21005 Detail

Description

In Phoenix Contact FL SWITCH SMCS series products in multiple versions if an attacker sends a hand-crafted TCP-Packet with the Urgent-Flag set and the Urgent-Pointer set to 0, the network stack will crash. The device needs to be rebooted afterwards.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

CNA: CERT VDE

Base Score: 7.5 HIGH

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: 7.8 HIGH

Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:C)

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://cert.vde.com/en-us/advisories/vde-2021-023	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-362	Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')	CERT VDE

Known Affected Software Configurations Switch to CPE 2.2

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Change History

2 change records found show changes

Initial Analysis by NIST 7/01/2021 7:56:55 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		AND OR cpe:2.3:o:phoenixcontact:fl_nat_smn_8tx-m_firmware::::::::* versions up to (including) 4.63 OR cpe:2.3:h:phoenixcontact:fl_nat_smn_8tx-m:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:phoenixcontact:fl_nat_smn_8tx_firmware::::::::* versions up to (including) 4.63 OR cpe:2.3:h:phoenixcontact:fl_nat_smn_8tx:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:phoenixcontact:fl_switch_smcs_14tx\/2fx-sm_firmware::::::::* versions up to (including) 4.70 OR cpe:2.3:h:phoenixcontact:fl_switch_smcs_14tx\/2fx-sm:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:phoenixcontact:fl_switch_smcs_14tx\/2fx_firmware::::::::* versions up to (including) 4.70 OR cpe:2.3:h:phoenixcontact:fl_switch_smcs_14tx\/2fx:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:phoenixcontact:fl_switch_smcs_16tx_firmware::::::::* versions up to (including) 4.70 OR cpe:2.3:h:phoenixcontact:fl_switch_smcs_16tx:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:phoenixcontact:fl_switch_smcs_4tx-pn_firmware::::::::* versions up to (including) 4.70 OR cpe:2.3:h:phoenixcontact:fl_switch_smcs_4tx-pn:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:phoenixcontact:fl_switch_smcs_6gt\/2sfp_firmware::::::::* versions up to (including) 4.70 OR cpe:2.3:h:phoenixcontact:fl_switch_smcs_6gt\/2sfp:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:phoenixcontact:fl_switch_smcs_6tx\/2sfp_firmware::::::::* versions up to (including) 4.70 OR cpe:2.3:h:phoenixcontact:fl_switch_smcs_6tx\/2sfp:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:phoenixcontact:fl_switch_smcs_8gt_firmware::::::::* versions up to (including) 4.70 OR cpe:2.3:h:phoenixcontact:fl_switch_smcs_8gt:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:phoenixcontact:fl_switch_smcs_8tx-pn_firmware::::::::* versions up to (including) 4.70 OR cpe:2.3:h:phoenixcontact:fl_switch_smcs_8tx-pn:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:phoenixcontact:fl_switch_smcs_8tx_firmware::::::::* versions up to (including) 4.70 OR cpe:2.3:h:phoenixcontact:fl_switch_smcs_8tx:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:phoenixcontact:fl_switch_smn_6tx\/2fx_firmware::::::::* versions up to (including) 4.70 OR cpe:2.3:h:phoenixcontact:fl_switch_smn_6tx\/2fx:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:phoenixcontact:fl_switch_smn_6tx\/2fx_sm_firmware::::::::* versions up to (including) 4.70 OR cpe:2.3:h:phoenixcontact:fl_switch_smn_6tx\/2fx_sm:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:phoenixcontact:fl_switch_smn_6tx\/2pof-pn_firmware::::::::* versions up to (including) 4.70 OR cpe:2.3:h:phoenixcontact:fl_switch_smn_6tx\/2pof-pn:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:phoenixcontact:fl_switch_smn_8tx-pn_firmware::::::::* versions up to (including) 4.70 OR cpe:2.3:h:phoenixcontact:fl_switch_smn_8tx-pn:-:::::::*
Added	CVSS V2		NIST (AV:N/AC:L/Au:N/C:N/I:N/A:C)
Added	CVSS V3.1		NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Changed	Reference Type	https://cert.vde.com/en-us/advisories/vde-2021-023 No Types Assigned	https://cert.vde.com/en-us/advisories/vde-2021-023 Third Party Advisory

Quick Info

CVE Dictionary Entry:
CVE-2021-21005
NVD Published Date:
06/25/2021
NVD Last Modified:
07/01/2021
Source:
CERT VDE

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