CVE-2021-20612

Lack of administrator control over security vulnerability in MELSEC-F series FX3U-ENET Firmware version 1.14 and prior, FX3U-ENET-L Firmware version 1.14 and prior and FX3U-ENET-P502 Firmware version 1.14 and prior allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition in communication function of the product or other unspecified effects by sending specially crafted packets to an unnecessary opening of TCP port. Control by MELSEC-F series PLC is not affected by this vulnerability, but system reset is required for recovery.

CVSS v3.0 7.5 HIGH
CVSS v2.0 7.8 HIGH

7.5^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

7.8^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 6.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

Link	Resource
https://jvn.jp/vu/JVNVU93268332/index.html	Third Party Advisory VDB Entry
https://www.cisa.gov/uscert/ics/advisories/icsa-22-013-01	Third Party Advisory US Government Resource
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-023_en.pdf	Vendor Advisory

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Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:mitsubishielectric:fx3u-enet_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:mitsubishielectric:fx3u-enet:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:mitsubishielectric:fx3u-enet-l_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:mitsubishielectric:fx3u-enet-l:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND

cpe:2.3:o:mitsubishielectric:fx3u-enet-p502_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:mitsubishielectric:fx3u-enet-p502:-:*:*:*:*:*:*:*

Information

Published : 2022-01-14 12:15

Updated : 2022-01-21 10:11

NVD link : CVE-2021-20612

Mitre link : CVE-2021-20612

JSON object : View

CWE

CWE-798

Use of Hard-coded Credentials

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Products Affected

mitsubishielectric

fx3u-enet_firmware
fx3u-enet-p502
fx3u-enet-p502_firmware
fx3u-enet
fx3u-enet-l_firmware
fx3u-enet-l

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