high
7.8
CWE
20
Advisory Published
Updated

CVE-2018-16556: Input Validation

First published: Thu Dec 13 2018(Updated: )

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.

Credit: productcert@siemens.com

Affected SoftwareAffected VersionHow to fix
Siemens Simatic S7-400 Firmware<=v6.0
Siemens Simatic S7-400
Siemens Simatic S7-400 Pn\/dp V7 Firmware
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
Siemens Simatic S7-400h V6

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Reference Links

Frequently Asked Questions

  • What is CVE-2018-16556?

    CVE-2018-16556 is a vulnerability in SIMATIC S7-400 CPU 412-1 DP V7 (All versions) that allows remote attackers to obtain sensitive information.

  • What is the severity of CVE-2018-16556?

    The severity of CVE-2018-16556 is high, with a severity value of 7.5.

  • How does CVE-2018-16556 affect Siemens Simatic S7-400 Firmware?

    The vulnerability affects Siemens Simatic S7-400 Firmware versions up to v6.0.

  • Is Siemens Simatic S7-400 Pn\/dp V7 affected by CVE-2018-16556?

    No, Siemens Simatic S7-400 Pn\/dp V7 is not affected by CVE-2018-16556.

  • How can I fix CVE-2018-16556?

    To fix CVE-2018-16556, update your Siemens Simatic S7-400 Firmware to version v6.0 or newer.

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