CVE-2020-15783 — HIGH (7.5)

Vulnerability Description

A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC TDC CPU555 (All versions), SINUMERIK 840D sl (All versions). Sending multiple specially crafted packets to the affected devices could cause a Denial-of-Service on port 102. A cold restart is required to recover the service.

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

Vendor	Product	Versions
Siemens	Sinumerik 840D Sl Firmware	All versions
Siemens	Sinumerik 840D Sl	-
Siemens	Simatic S7-300 Cpu 312 Firmware	All versions
Siemens	Simatic S7-300 Cpu 312	-
Siemens	Simatic S7-300 Cpu 314 Firmware	All versions
Siemens	Simatic S7-300 Cpu 314	-
Siemens	Simatic S7-300 Cpu 315-2 Dp Firmware	All versions
Siemens	Simatic S7-300 Cpu 315-2 Dp	-
Siemens	Simatic S7-300 Cpu 315-2 Pn Firmware	All versions
Siemens	Simatic S7-300 Cpu 315-2 Pn	-
Siemens	Simatic S7-300 Cpu 317-2 Pn Firmware	All versions
Siemens	Simatic S7-300 Cpu 317-2 Pn	-
Siemens	Simatic S7-300 Cpu 317-2 Dp Firmware	All versions
Siemens	Simatic S7-300 Cpu 317-2 Dp	-
Siemens	Simatic S7-300 Cpu 315F-2 Dp Firmware	All versions
Siemens	Simatic S7-300 Cpu 315F-2 Dp	-
Siemens	Simatic S7-300 Cpu 315F-2 Pn Firmware	All versions
Siemens	Simatic S7-300 Cpu 315F-2 Pn	-
Siemens	Simatic S7-300 Cpu 317F-2 Pn Firmware	All versions
Siemens	Simatic S7-300 Cpu 317F-2 Pn	-

Related Weaknesses (CWE)

CWE-400

References

https://cert-portal.siemens.com/productcert/pdf/ssa-492828.pdfMitigationVendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-492828.pdfMitigationVendor Advisory

FAQ

What is CVE-2020-15783?

CVE-2020-15783 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), SIMATIC TDC CPU555 (All versions), SINUMERIK 840D sl (All versions). Sen...

How severe is CVE-2020-15783?

CVE-2020-15783 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-2020-15783?

Check the references section above for vendor advisories and patch information. Affected products include: Siemens Sinumerik 840D Sl Firmware, Siemens Sinumerik 840D Sl, Siemens Simatic S7-300 Cpu 312 Firmware, Siemens Simatic S7-300 Cpu 312, Siemens Simatic S7-300 Cpu 314 Firmware.