HTTP Response Splitting Vulnerability in Schneider Electric PLCs
CVE-2018-7830

7.5HIGH

Key Information:

Vendor
Schneider Electric
Status
Embedded Web Servers In All Modicon M340, Premium, Quantum Plcs And Bmxnor0200
Vendor
CVE Published:
30 November 2018

Summary

An HTTP Response Splitting vulnerability in the embedded web servers of Schneider Electric's Modicon M340, Premium, Quantum PLCs and BMXNOR0200 can lead to denial of service. This occurs through the improper neutralization of CRLF sequences in HTTP headers, allowing an attacker to send specially crafted HTTP requests. The attack may interrupt service for approximately one minute, impacting the PLCs' functionality.

Affected Version(s)

Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200

References

https://www.tenable.com/security/research/tra-2018-38
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https://www.schneider-electric.com/en/download/document/S...
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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

.