Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2020-5668

Severity CVSS v4.0:
Pending analysis
Type:
CWE-400 Uncontrolled Resource Consumption ('Resource Exhaustion')
Publication date:
20/11/2020
Last modified:
29/04/2022

Description

Uncontrolled resource consumption vulnerability in MELSEC iQ-R Series modules (R00/01/02CPU firmware version '19' and earlier, R04/08/16/32/120 (EN) CPU firmware version '51' and earlier, R08/16/32/120SFCPU firmware version '22' and earlier, R08/16/32/120PCPU firmware version '25' and earlier, R08/16/32/120PSFCPU firmware version '06' and earlier, RJ71EN71 firmware version '47' and earlier, RJ71GF11-T2 firmware version '47' and earlier, RJ72GF15-T2 firmware version '07' and earlier, RJ71GP21-SX firmware version '47' and earlier, RJ71GP21S-SX firmware version '47' and earlier, and RJ71GN11-T2 firmware version '11' and earlier) allows a remote unauthenticated attacker to cause an error in a CPU unit and cause a denial-of-service (DoS) condition in execution of the program and its communication, or to cause a denial-of-service (DoS) condition in communication via the unit by receiving a specially crafted SLMP packet

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete

Base Score 2.0
7.80
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:mitsubishielectric:r00cpu_firmware:*:*:*:*:*:*:*:* 19 (including)
cpe:2.3:h:mitsubishielectric:r00cpu:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:r01cpu_firmware:*:*:*:*:*:*:*:* 19 (including)
cpe:2.3:h:mitsubishielectric:r01cpu:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:r02cpu_firmware:*:*:*:*:*:*:*:* 19 (including)
cpe:2.3:h:mitsubishielectric:r02cpu:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:r04cpu_firmware:*:*:*:*:*:*:*:* 51 (including)
cpe:2.3:h:mitsubishielectric:r04cpu:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:r08cpu_firmware:*:*:*:*:*:*:*:* 51 (including)
cpe:2.3:h:mitsubishielectric:r08cpu:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:r16cpu_firmware:*:*:*:*:*:*:*:* 51 (including)
cpe:2.3:h:mitsubishielectric:r16cpu:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:r32cpu_firmware:*:*:*:*:*:*:*:* 51 (including)
cpe:2.3:h:mitsubishielectric:r32cpu:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:r120cpu_firmware:*:*:*:*:*:*:*:* 51 (including)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools