CVE-2020-28395 — MEDIUM (5.9)

Q: How severe is CVE-2020-28395?

CVE-2020-28395 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2020-28395?

Check the references section above for vendor advisories and patch information. Affected products include: Siemens Scalance Xr324-12M Firmware, Siemens Scalance Xr324-12M, Siemens Scalance Xr324-12M Ts Firmware, Siemens Scalance Xr324-12M Ts, Siemens Scalance Xr324-4M Eec Firmware.

Vulnerability Description

A vulnerability has been identified in SCALANCE X-200RNA switch family (All versions < V3.2.7), SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants) (All versions < V4.1.0). Devices do not create a new unique private key after factory reset. An attacker could leverage this situation to a man-in-the-middle situation and decrypt previously captured traffic.

CVSS Score

5.9

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Siemens	Scalance Xr324-12M Firmware	< 4.1.0
Siemens	Scalance Xr324-12M	-
Siemens	Scalance Xr324-12M Ts Firmware	< 4.1.0
Siemens	Scalance Xr324-12M Ts	-
Siemens	Scalance Xr324-4M Eec Firmware	< 4.1.0
Siemens	Scalance Xr324-4M Eec	-
Siemens	Scalance Xr324-4M Poe Firmware	< 4.1.0
Siemens	Scalance Xr324-4M Poe	-
Siemens	Scalance Xr324-4M Poe Ts Firmware	< 4.1.0
Siemens	Scalance Xr324-4M Poe Ts	-
Siemens	Scalance Xr324Wg Firmware	< 4.1.0
Siemens	Scalance Xr324Wg	-
Siemens	Scalance Xr326-2C Poe Wg Firmware	< 4.1.0
Siemens	Scalance Xr326-2C Poe Wg	-
Siemens	Scalance Xr328-4C Wg Firmware	< 4.1.0
Siemens	Scalance Xr328-4C Wg	-

Related Weaknesses (CWE)

CWE-321 CWE-798

References

https://cert-portal.siemens.com/productcert/pdf/ssa-274900.pdfVendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-012-02Third Party AdvisoryUS Government ResourceVendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-274900.pdfVendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-012-02Third Party AdvisoryUS Government ResourceVendor Advisory

FAQ

What is CVE-2020-28395?

CVE-2020-28395 is a vulnerability with a CVSS score of 5.9 (MEDIUM). A vulnerability has been identified in SCALANCE X-200RNA switch family (All versions < V3.2.7), SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants) (All versions < V4.1.0). Devices do no...

How severe is CVE-2020-28395?

CVE-2020-28395 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-28395?

Check the references section above for vendor advisories and patch information. Affected products include: Siemens Scalance Xr324-12M Firmware, Siemens Scalance Xr324-12M, Siemens Scalance Xr324-12M Ts Firmware, Siemens Scalance Xr324-12M Ts, Siemens Scalance Xr324-4M Eec Firmware.