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[email protected]NVD:CVE-2021-21005

HistoryJun 25, 2021 - 7:15 p.m.

CVE-2021-21005

2021-06-2519:15:08

CWE-362

[email protected]

web.nvd.nist.gov

7.8 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

42.5%

JSON

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.

Affected configurations

NVD

Node

phoenixcontactfl_switch_smcs_16tx_firmwareRange≤4.70

AND

phoenixcontactfl_switch_smcs_16txMatch-

Node

phoenixcontactfl_switch_smcs_14tx\/2fx_firmwareRange≤4.70

AND

phoenixcontactfl_switch_smcs_14tx\/2fxMatch-

Node

phoenixcontactfl_switch_smcs_14tx\/2fx-sm_firmwareRange≤4.70

AND

phoenixcontactfl_switch_smcs_14tx\/2fx-smMatch-

Node

phoenixcontactfl_switch_smcs_8gt_firmwareRange≤4.70

AND

phoenixcontactfl_switch_smcs_8gtMatch-

Node

phoenixcontactfl_switch_smcs_6gt\/2sfp_firmwareRange≤4.70

AND

phoenixcontactfl_switch_smcs_6gt\/2sfpMatch-

Node

phoenixcontactfl_switch_smcs_8tx-pn_firmwareRange≤4.70

AND

phoenixcontactfl_switch_smcs_8tx-pnMatch-

Node

phoenixcontactfl_switch_smcs_4tx-pn_firmwareRange≤4.70

AND

phoenixcontactfl_switch_smcs_4tx-pnMatch-

Node

phoenixcontactfl_switch_smcs_8tx_firmwareRange≤4.70

AND

phoenixcontactfl_switch_smcs_8txMatch-

Node

phoenixcontactfl_switch_smcs_6tx\/2sfp_firmwareRange≤4.70

AND

phoenixcontactfl_switch_smcs_6tx\/2sfpMatch-

Node

phoenixcontactfl_switch_smn_6tx\/2pof-pn_firmwareRange≤4.70

AND

phoenixcontactfl_switch_smn_6tx\/2pof-pnMatch-

Node

phoenixcontactfl_switch_smn_8tx-pn_firmwareRange≤4.70

AND

phoenixcontactfl_switch_smn_8tx-pnMatch-

Node

phoenixcontactfl_switch_smn_6tx\/2fx_firmwareRange≤4.70

AND

phoenixcontactfl_switch_smn_6tx\/2fxMatch-

Node

phoenixcontactfl_switch_smn_6tx\/2fx_sm_firmwareRange≤4.70

AND

phoenixcontactfl_switch_smn_6tx\/2fx_smMatch-

Node

phoenixcontactfl_nat_smn_8tx_firmwareRange≤4.63

AND

phoenixcontactfl_nat_smn_8txMatch-

Node

phoenixcontactfl_nat_smn_8tx-m_firmwareRange≤4.63

AND

phoenixcontactfl_nat_smn_8tx-mMatch-

References

cert.vde.com/en-us/advisories/vde-2021-023

7.8 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

42.5%

JSON

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