CVE-2018-16556

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.19%
Vendor Advisory siemens.com
Affected: Siemens SIMATIC S7-400 CPU 412-1 DP V7
Affected: Siemens SIMATIC S7-400 CPU 412-2 DP V7
Affected: Siemens SIMATIC S7-400 CPU 414-2 DP V7
Affected: Siemens SIMATIC S7-400 CPU 414-3 DP V7
Affected: Siemens SIMATIC S7-400 CPU 414-3 PN/DP V7
Affected: Siemens SIMATIC S7-400 CPU 414F-3 PN/DP V7
Affected: Siemens SIMATIC S7-400 CPU 416-2 DP V7
Affected: Siemens SIMATIC S7-400 CPU 416-3 DP V7
Affected: Siemens SIMATIC S7-400 CPU 416-3 PN/DP V7
Affected: Siemens SIMATIC S7-400 CPU 416F-2 DP V7
Affected: Siemens SIMATIC S7-400 CPU 416F-3 PN/DP V7
Affected: Siemens SIMATIC S7-400 CPU 417-4 DP V7
Affected: Siemens SIMATIC S7-400 CPU 412-2 PN V7
Affected: Siemens SIMATIC S7-400 H V4.5 and below CPU family (incl. SIPLUS variants)
Affected: Siemens SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants)
Affected: Siemens SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants)
Affected: Siemens SIMATIC S7-410 CPU family (incl. SIPLUS variants)
Affected: Siemens SIPLUS S7-400 CPU 414-3 PN/DP V7
Affected: Siemens SIPLUS S7-400 CPU 416-3 PN/DP V7
Affected: Siemens SIPLUS S7-400 CPU 416-3 V7
Affected: Siemens SIPLUS S7-400 CPU 417-4 V7
Published at:
Updated at:

References

Link Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-113131.pdf vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-16556?
CVE-2018-16556 has been scored as a high severity vulnerability.
How to fix CVE-2018-16556?
To fix CVE-2018-16556, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-16556 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-16556 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-16556?
CVE-2018-16556 affects Siemens SIMATIC S7-400 CPU 412-1 DP V7, Siemens SIMATIC S7-400 CPU 412-2 DP V7, Siemens SIMATIC S7-400 CPU 414-2 DP V7, Siemens SIMATIC S7-400 CPU 414-3 DP V7, Siemens SIMATIC S7-400 CPU 414-3 PN/DP V7, Siemens SIMATIC S7-400 CPU 414F-3 PN/DP V7, Siemens SIMATIC S7-400 CPU 416-2 DP V7, Siemens SIMATIC S7-400 CPU 416-3 DP V7, Siemens SIMATIC S7-400 CPU 416-3 PN/DP V7, Siemens SIMATIC S7-400 CPU 416F-2 DP V7, Siemens SIMATIC S7-400 CPU 416F-3 PN/DP V7, Siemens SIMATIC S7-400 CPU 417-4 DP V7, Siemens SIMATIC S7-400 CPU 412-2 PN V7, Siemens SIMATIC S7-400 H V4.5 and below CPU family (incl. SIPLUS variants), Siemens SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants), Siemens SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants), Siemens SIMATIC S7-410 CPU family (incl. SIPLUS variants), Siemens SIPLUS S7-400 CPU 414-3 PN/DP V7, Siemens SIPLUS S7-400 CPU 416-3 PN/DP V7, Siemens SIPLUS S7-400 CPU 416-3 V7, Siemens SIPLUS S7-400 CPU 417-4 V7.
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