CVE-2020-28391

Description

A vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions < V5.2.5), SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) (All versions < V5.5.0), SCALANCE X-200RNA switch family (All versions < V3.2.7). Devices create a new unique key upon factory reset, except when used with C-PLUG. When used with C-PLUG the devices use the hardcoded private RSA-key shipped with the firmware-image. An attacker could leverage this situation to a man-in-the-middle situation and decrypt previously captured traffic.

Categories

5.9
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.15%
Vendor Advisory siemens.com Vendor Advisory cisa.gov
Affected: Siemens SCALANCE X-200 switch family (incl. SIPLUS NET variants)
Affected: Siemens SCALANCE X-200IRT switch family (incl. SIPLUS NET variants)
Affected: Siemens SCALANCE X-200RNA switch family
Published at:
Updated at:

References

Link Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-274900.pdf vendor advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-012-02 vendor advisory third party advisory us government resource

Frequently Asked Questions

What is the severity of CVE-2020-28391?
CVE-2020-28391 has been scored as a medium severity vulnerability.
How to fix CVE-2020-28391?
To fix CVE-2020-28391, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-28391 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-28391 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-28391?
CVE-2020-28391 affects Siemens SCALANCE X-200 switch family (incl. SIPLUS NET variants), Siemens SCALANCE X-200IRT switch family (incl. SIPLUS NET variants), Siemens SCALANCE X-200RNA switch family.
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