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HIGH · 7.5

CVE-2019-18336

A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V3.X.17), SIMATIC TDC CP51M1 (All versions < V1.1.8), SIMATIC TDC CPU555...

Vulnerability Description

A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V3.X.17), SIMATIC TDC CP51M1 (All versions < V1.1.8), SIMATIC TDC CPU555 (All versions < V1.1.1), SINUMERIK 840D sl (All versions < V4.8.6), SINUMERIK 840D sl (All versions < V4.94). Specially crafted packets sent to port 102/tcp (Profinet) could cause the affected device to go into defect mode. A restart is required in order to recover the system. Successful exploitation requires an attacker to have network access to port 102/tcp, with no authentication. No user interation is required. At the time of advisory publication no public exploitation of this security vulnerability was known.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
SiemensSimatic S7-300 Cpu Firmware< 3.3.17
SiemensSimatic S7-300 Cpu-
SiemensSimatic S7-300 Cpu 312 Ifm Firmware< 3.3.17
SiemensSimatic S7-300 Cpu 312 Ifm-
SiemensSimatic S7-300 Cpu 313 Firmware< 3.3.17
SiemensSimatic S7-300 Cpu 313-
SiemensSimatic S7-300 Cpu 314 Firmware< 3.3.17
SiemensSimatic S7-300 Cpu 314-
SiemensSimatic S7-300 Cpu 314 Ifm Firmware< 3.3.17
SiemensSimatic S7-300 Cpu 314 Ifm-
SiemensSimatic S7-300 Cpu 315 Firmware< 3.3.17
SiemensSimatic S7-300 Cpu 315-
SiemensSimatic S7-300 Cpu 315-2 Dp Firmware< 3.3.17
SiemensSimatic S7-300 Cpu 315-2 Dp-
SiemensSimatic S7-300 Cpu 316-2 Dp Firmware< 3.3.17
SiemensSimatic S7-300 Cpu 316-2 Dp-
SiemensSimatic S7-300 Cpu 318-2 Firmware< 3.3.17
SiemensSimatic S7-300 Cpu 318-2-
SiemensSinumerik 840D Sl< 4.8.6
SiemensSimatic Tdc Cp51M1 Firmware< 1.1.8

Related Weaknesses (CWE)

CWE-400

References

FAQ

What is CVE-2019-18336?

CVE-2019-18336 is a vulnerability with a CVSS score of 7.5 (HIGH). A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V3.X.17), SIMATIC TDC CP51M1 (All versions < V1.1.8), SIMATIC TDC CPU555...

How severe is CVE-2019-18336?

CVE-2019-18336 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-2019-18336?

Check the references section above for vendor advisories and patch information. Affected products include: Siemens Simatic S7-300 Cpu Firmware, Siemens Simatic S7-300 Cpu, Siemens Simatic S7-300 Cpu 312 Ifm Firmware, Siemens Simatic S7-300 Cpu 312 Ifm, Siemens Simatic S7-300 Cpu 313 Firmware.