Vulnerability Description
A vulnerability has been identified in 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), SIMATIC S7-400 CPU 414-3 DP V7 (All versions), SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416-2 DP V7 (All versions), SIMATIC S7-400 CPU 416-3 DP V7 (All versions), SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416F-2 DP V7 (All versions), SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 417-4 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 PN V7 (All versions < V7.0.3), SIMATIC S7-400 H V4.5 and below CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.9), SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-410 CPU family (incl. SIPLUS variants) (All versions < V8.2.1), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 V7 (All versions), SIPLUS S7-400 CPU 417-4 V7 (All versions). Specially crafted packets sent to port 102/tcp via Ethernet interface, via PROFIBUS, or via Multi Point Interfaces (MPI) could cause the affected devices to go into defect mode. Manual reboot is required to resume normal operation. Successful exploitation requires an attacker to be able to send specially crafted packets to port 102/tcp via Ethernet interface, via PROFIBUS or Multi Point Interfaces (MPI). No user interaction and no user privileges are required to exploit the security vulnerability. The vulnerability could allow causing a denial of service condition of the core functionality of the CPU, compromising the availability of the system.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Siemens | Simatic S7-400 Firmware | <= v6.0 |
| Siemens | Simatic S7-400 | - |
| Siemens | Simatic S7-400 Pn\/Dp V7 Firmware | All versions |
| Siemens | Simatic S7-400 Pn\/Dp V7 | - |
| Siemens | Simatic S7-400H Firmware | <= v4.5 |
| Siemens | Simatic S7-400H | - |
| Siemens | Simatic S7-410 Firmware | < 8.2.1 |
| Siemens | Simatic S7-410 | - |
| Siemens | Simatic S7-400H V6 Firmware | All versions |
| Siemens | Simatic S7-400H V6 | - |
Related Weaknesses (CWE)
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-113131.pdfVendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-113131.pdfVendor Advisory
FAQ
What is CVE-2018-16556?
CVE-2018-16556 is a vulnerability with a CVSS score of 7.5 (HIGH). A vulnerability has been identified in 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), SIMATIC S7-400 C...
How severe is CVE-2018-16556?
CVE-2018-16556 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-16556?
Check the references section above for vendor advisories and patch information. Affected products include: Siemens Simatic S7-400 Firmware, Siemens Simatic S7-400, Siemens Simatic S7-400 Pn\/Dp V7 Firmware, Siemens Simatic S7-400 Pn\/Dp V7, Siemens Simatic S7-400H Firmware.