Denial of Service in EN100 Ethernet Modules by Siemens
CVE-2018-11451

7.5HIGH

Key Information:

Vendor
Siemens
Status
Firmware Variant Iec 61850 For En100 Ethernet Module
Firmware Variant Profinet Io For En100 Ethernet Module
Firmware Variant Modbus Tcp For En100 Ethernet Module
Firmware Variant Dnp3 Tcp For En100 Ethernet Module
Vendor
CVE Published:
23 July 2018

Summary

A vulnerability exists in various firmware versions of Siemens EN100 Ethernet module, which could lead to a Denial of Service condition. Attackers can exploit this by sending specially crafted packets to port 102/tcp, which requires the IEC 61850-MMS communication to be activated beforehand. Once exploited, the affected devices may need a manual restart to restore functionality. No user interaction or special privileges are required for an attacker to manipulate the vulnerable products, posing risks to the availability of the networked systems.

Affected Version(s)

Firmware variant DNP3 TCP for EN100 Ethernet module All versions

Firmware variant IEC 61850 for EN100 Ethernet module All versions < V4.33

Firmware variant IEC104 for EN100 Ethernet module All versions < V1.22

References

https://cert-portal.siemens.com/productcert/pdf/ssa-63512...
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https://cert-portal.siemens.com/productcert/pdf/ssa-32554...
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https://www.securityfocus.com/bid/106221
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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

.