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Modicon M340 Bmxp341000 Firmware CVE-2020-7549

MEDIUM
Improper Check for Unusual or Exceptional Conditions (CWE-754)
2020-12-11 cybersecurity@se.com
Information Disclosure Modicon M340 Bmxp341000 Firmware Modicon M340 Bmxp342000 Firmware Modicon M340 Bmxp3420102 Firmware Modicon M340 Bmxp3420102Cl Firmware Modicon M340 Bmxp342020 Firmware Modicon M340 Bmxp3420302 Firmware Modicon M340 Bmxp3420302Cl Firmware Bmxnoe0100 Firmware Bmxnoe0110 Firmware Bmxnoc0401 Firmware 140Noe77111 Firmware 140Noc78100 Firmware 140Noc78000 Firmware 140Cpu65150 Firmware Tsxety4103 Firmware Tsxety5103 Firmware Tsxp574634 Firmware Tsxp575634 Firmware Tsxp576634 Firmware
5.3
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
5.3 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

Lifecycle Timeline

1
CVE Published
Dec 11, 2020 - 01:15 cve.org
MEDIUM 5.3

DescriptionCVE.org

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions), that could cause denial of HTTP and FTP services when a series of specially crafted requests is sent to the controller over HTTP.

AnalysisAI

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication. Rated medium severity (CVSS 5.3), 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 the Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions), that could cause denial of HTTP and FTP services when a series of specially crafted requests is sent to the controller over HTTP. Affected products include: Schneider-Electric Modicon M340 Bmxp341000 Firmware, Schneider-Electric Modicon M340 Bmxp342000 Firmware, Schneider-Electric Modicon M340 Bmxp3420102 Firmware, Schneider-Electric Modicon M340 Bmxp3420102Cl Firmware, Schneider-Electric Modicon M340 Bmxp342020 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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CVE-2020-7549 vulnerability details – vuln.today
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