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Modicon M580 Firmware CVE-2019-6856

HIGH
Improper Check for Unusual or Exceptional Conditions (CWE-754)
2020-01-06 cybersecurity@se.com
Denial Of Service Modicon M580 Firmware Modicon M340 Firmware Tsxh5744M Firmware Tsxh5724M Firmware Tsxp576634M Firmware Tsxp57554M Firmware Tsxp575634M Firmware Tsxp57454M Firmware Tsxp574634M Firmware Tsxp57354M Firmware Tsxp573634M Firmware Tsxp57304M Firmware Tsxp57254M Firmware Tsxp572634M Firmware Tsxp57204M Firmware Tsxp571634M Firmware Tsxp57154M Firmware Tsxp57104M Firmware 140Cpu65150 Firmware 140Cpu65160 Firmware 140Cpu65260 Firmware 140Cpu67261 Firmware 140Cpu67060 Firmware 140Cpu67160 Firmware 140Cpu67260 Firmware 140Cpu65860 Firmware 140Cpu67861 Firmware 140Cpu65160S Firmware 140Cpu67160S Firmware
7.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

1
CVE Published
Jan 06, 2020 - 23:15 cve.org
HIGH 7.5

DescriptionCVE.org

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific versions) which could cause a Denial of Service when writing specific physical memory blocks using Modbus TCP.

AnalysisAI

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific versions). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-754. A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific versions) which could cause a Denial of Service when writing specific physical memory blocks using Modbus TCP. Affected products include: Schneider-Electric Modicon M580 Firmware, Schneider-Electric Modicon M340 Firmware, Schneider-Electric Tsxh5744M Firmware, Schneider-Electric Tsxh5724M Firmware, Schneider-Electric Tsxp576634M Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Same weakness CWE-754 – Improper Check for Unusual or Exceptional Conditions

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Same technique Denial Of Service

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CVE-2019-6856 vulnerability details – vuln.today
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