CVE-2021-20600

CVSS V2 Medium 4.3 CVSS V3 Medium 5.9
Description
Uncontrolled resource consumption in Mitsubishi Electric MELSEC iQ-R series C Controller Module R12CCPU-V Firmware Versions "16" and prior allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending a large number of packets in a short time while the module starting up. System reset is required for recovery.
Overview
  • CVE ID
  • CVE-2021-20600
  • Assigner
  • Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp
  • Vulnerability Status
  • Undergoing Analysis
  • Published Version
  • 2021-10-08T17:15:07
  • Last Modified Date
  • 2022-07-07T16:15:08
Weakness Enumerations
CWE URL
CWE-400 http://cwe.mitre.org/data/definitions/400.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:mitsubishielectric:r12ccpu-v_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:mitsubishielectric:r12ccpu-v:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 4.3
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • HIGH
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 5.9
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.2
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-015_en.pdf Vendor Advisory
https://jvn.jp/vu/JVNVU94914666/index.html Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-280-04 Third Party Advisory US Government Resource
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-20600
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20600
History
Created Old Value New Value Data Type Notes
2022-05-10 06:44:50 Added to TrackCVE
2022-12-05 12:05:44 2021-10-08T17:15Z 2021-10-08T17:15:07 CVE Published Date updated
2022-12-05 12:05:44 2022-07-07T16:15:08 CVE Modified Date updated
2022-12-05 12:05:44 Undergoing Analysis Vulnerability Status updated