CWE
321 798
Advisory Published
Updated

CVE-2020-28395

First published: Tue Jan 12 2021(Updated: )

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.

Credit: productcert@siemens.com

Affected SoftwareAffected VersionHow to fix
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
Siemens SCALANCE X-200 switch family (incl. SIPLUS NET variants)<5.2.5
5.2.5

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the vulnerability ID?

    The vulnerability ID is CVE-2020-28395.

  • Which devices are affected by this vulnerability?

    The SCALANCE X-200RNA switch family (All versions < V3.2.7) and SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants) (All versions < V4.1.0) are affected by this vulnerability.

  • What is the severity of CVE-2020-28395?

    The severity of CVE-2020-28395 is medium with a CVSS score of 5.9.

  • What is the impact of this vulnerability?

    An attacker could exploit this vulnerability to leverage the lack of a unique private key after a factory reset.

  • Are there any known security advisories related to this vulnerability?

    Yes, there are security advisories available for this vulnerability. You can find them at the following references: [link1](https://cert-portal.siemens.com/productcert/pdf/ssa-274900.pdf), [link2](https://us-cert.cisa.gov/ics/advisories/icsa-21-012-02).

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