Improper Condition Check in Modicon Controllers by Schneider Electric
CVE-2019-6857

7.5HIGH

Key Information:

Vendor
Schneider Electric
Status
Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see Security Notification For Specific Versions)
Vendor
CVE Published:
6 January 2020

Summary

A vulnerability exists in multiple Modicon controllers from Schneider Electric, where improper checks for unusual conditions can lead to Denial of Service. This issue arises specifically when certain memory blocks are accessed using the Modbus TCP protocol, potentially causing disruption in the controller's functionality. Affected models include Modicon M580, M340, Quantum, and Premium, as detailed in the related security notifications.

Affected Version(s)

Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific ) Modicon M580

Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific ) Modicon M340

Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific ) Modicon Quantum

References

https://www.se.com/ww/en/download/document/SEVD-2019-344-01
x_refsource_CONFIRM
https://www.us-cert.gov/ics/advisories/icsa-20-016-01
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.