Denial-of-Service Vulnerability in SIMATIC S7-300 and Related Products by Siemens
CVE-2020-15783

7.5HIGH

Key Information:

Vendor
Siemens
Status
Simatic S7-300 Cpu Family (incl. Related Et200 Cpus And Siplus Variants)
Simatic Tdc Cpu555
Sinumerik 840d Sl
Vendor
CVE Published:
12 November 2020

Summary

A design flaw has been detected in the SIMATIC S7-300 CPU family, as well as associated ET200 CPUs and SIPLUS variants, which allows attackers to send multiple specially crafted packets to these devices. This can lead to a Denial-of-Service condition on port 102, resulting in an interruption of service. To restore functionality, a cold restart of the affected devices is required.

Affected Version(s)

SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) All versions

SIMATIC TDC CPU555 All versions

SINUMERIK 840D sl All versions

References

https://cert-portal.siemens.com/productcert/pdf/ssa-49282...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.