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Modicon M340 Bmxp341000 Firmware CVE-2020-7535

HIGH
Path Traversal (CWE-22)
2020-12-11 cybersecurity@se.com
Path Traversal 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 140Noe77101 Firmware 140Noe77111 Firmware 140Cpu65150 Firmware 140Cpu65160 Firmware 140Noc78000 Firmware 140Noc78100 Firmware 140Noc77101 Firmware Tsxp574634 Firmware Tsxp575634 Firmware Tsxp576634 Firmware Tsxety4103 Firmware Tsxety5103 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:H/I:N/A:N

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:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

1
CVE Published
Dec 11, 2020 - 01:15 nvd
HIGH 7.5

DescriptionNVD

A CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal' Vulnerability Type) 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 disclosure of information when sending a specially crafted request to the controller over HTTP.

AnalysisAI

A CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal' Vulnerability Type) vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and. 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 as Path Traversal (CWE-22), which allows attackers to access files and directories outside the intended path. A CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal' Vulnerability Type) 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 disclosure of information when sending a specially crafted request 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. Validate and canonicalize file paths. Use chroot or sandboxing. Reject input containing path separators or '../' sequences.

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CVE-2020-7535 vulnerability details – vuln.today
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