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MEDIUM · 6.5

CVE-2020-15791

A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC S7-400 CPU family (incl. SIPLUS variants) (All versions), SIMATI...

Vulnerability Description

A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC S7-400 CPU family (incl. SIPLUS variants) (All versions), SIMATIC WinAC RTX (F) 2010 (All versions), SINUMERIK 840D sl (All versions). The authentication protocol between a client and a PLC via port 102/tcp (ISO-TSAP) insufficiently protects the transmitted password. This could allow an attacker that is able to intercept the network traffic to obtain valid PLC credentials.

CVSS Score

6.5

MEDIUM

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

Affected Products

VendorProductVersions
SiemensSimatic S7-300 Cpu 312 FirmwareAll versions
SiemensSimatic S7-300 Cpu 312-
SiemensSimatic S7-300 Cpu 314 FirmwareAll versions
SiemensSimatic S7-300 Cpu 314-
SiemensSimatic S7-300 Cpu 315-2 Dp FirmwareAll versions
SiemensSimatic S7-300 Cpu 315-2 Dp-
SiemensSimatic S7-300 Cpu 315-2 Pn FirmwareAll versions
SiemensSimatic S7-300 Cpu 315-2 Pn-
SiemensSimatic S7-300 Cpu 317-2 Pn FirmwareAll versions
SiemensSimatic S7-300 Cpu 317-2 Pn-
SiemensSimatic S7-300 Cpu 317-2 Dp FirmwareAll versions
SiemensSimatic S7-300 Cpu 317-2 Dp-
SiemensSimatic S7-300 Cpu 315F-2 Dp FirmwareAll versions
SiemensSimatic S7-300 Cpu 315F-2 Dp-
SiemensSimatic S7-300 Cpu 315F-2 Pn FirmwareAll versions
SiemensSimatic S7-300 Cpu 315F-2 Pn-
SiemensSimatic S7-300 Cpu 317F-2 Pn FirmwareAll versions
SiemensSimatic S7-300 Cpu 317F-2 Pn-
SiemensSimatic S7-300 Cpu 317F-2 Dp FirmwareAll versions
SiemensSimatic S7-300 Cpu 317F-2 Dp-

Related Weaknesses (CWE)

CWE-522

References

FAQ

What is CVE-2020-15791?

CVE-2020-15791 is a vulnerability with a CVSS score of 6.5 (MEDIUM). A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC S7-400 CPU family (incl. SIPLUS variants) (All versions), SIMATI...

How severe is CVE-2020-15791?

CVE-2020-15791 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-15791?

Check the references section above for vendor advisories and patch information. Affected products include: Siemens Simatic S7-300 Cpu 312 Firmware, Siemens Simatic S7-300 Cpu 312, Siemens Simatic S7-300 Cpu 314 Firmware, Siemens Simatic S7-300 Cpu 314, Siemens Simatic S7-300 Cpu 315-2 Dp Firmware.