Denial of Service Risk in Siemens SIMATIC S7-400 CPUs
CVE-2018-16556

7.5HIGH

Key Information:

Vendor
Siemens
Status
Simatic S7-400 Cpu 412-1 Dp V7
Simatic S7-400 Cpu 412-2 Dp V7
Simatic S7-400 Cpu 414-2 Dp V7
Simatic S7-400 Cpu 414-3 Dp V7
Vendor
CVE Published:
13 December 2018

Summary

The SIMATIC S7-400 CPUs are susceptible to a vulnerability that allows an attacker to send specially crafted packets to port 102/tcp via Ethernet or through PROFIBUS and Multi Point Interfaces (MPI). This can result in the devices entering a defect mode, necessitating a manual reboot to restore functionality. No user interaction or privileges are required, making this a significant risk to system availability.

Affected Version(s)

SIMATIC S7-400 CPU 412-1 DP V7 All versions

SIMATIC S7-400 CPU 412-2 DP V7 All versions

SIMATIC S7-400 CPU 414-2 DP V7 All versions

References

https://cert-portal.siemens.com/productcert/pdf/ssa-11313...

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

.