Vulnerability Report

CVE-2020-5668

Title: Uncontrolled resource consumption in MELSEC iQ-R Series modules

Denial-of-service

Proof Of Concept

No public PoC currently indexed for CVE-2020-5668.

CWE Category CWE-400
Published Date Nov 20, 2020
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 7.5 CVSS v3.1
Exploit Probability (EPSS)
4.94%

Vulnerability Summary

CVE-2020-5668: 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

Impacted Vendors

M
mitsubishielectric 28

Reference Links

https://jvn.jp/vu/JVNVU95980140/index.html https://us-cert.cisa.gov/ics/advisories/icsa-20-324-05 https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-016.pdf https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-016_en.pdf https://jvn.jp/vu/JVNVU95980140/index.html https://us-cert.cisa.gov/ics/advisories/icsa-20-324-05 https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-016.pdf https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-016_en.pdf
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0
Source Entity [email protected]
Severity HIGH
7.8
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:N/C:N/I:N/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-5668 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.