FKIE_CVE-2020-28391
Vulnerability from fkie_nvd - Published: 2021-01-12 21:15 - Updated: 2026-06-17 03:10
Severity
Summary
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.
References
| URL | Tags | ||
|---|---|---|---|
| productcert@siemens.com | https://cert-portal.siemens.com/productcert/pdf/ssa-274900.pdf | Vendor Advisory | |
| productcert@siemens.com | https://us-cert.cisa.gov/ics/advisories/icsa-21-012-02 | Third Party Advisory, US Government Resource, Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://cert-portal.siemens.com/productcert/pdf/ssa-274900.pdf | Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://us-cert.cisa.gov/ics/advisories/icsa-21-012-02 | Third Party Advisory, US Government Resource, Vendor Advisory |
Impacted products
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"value": "A vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions \u003c V5.2.5), SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) (All versions \u003c V5.5.0), SCALANCE X-200RNA switch family (All versions \u003c 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."
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"value": "Se ha identificado una vulnerabilidad en la familia de switches SCALANCE X-200 (incluyendo Variantes SIPLUS NET) (Todas las versiones anteriores a la versi\u00f3n V5.2.5), familia de switches SCALANCE X-200IRT (incluyendo la variante SIPLUS NET) (Todas las versiones anteriores a la versi\u00f3n V5.5.0). Los dispositivos crean una nueva clave \u00fanica tras el restablecimiento de f\u00e1brica, excepto cuando se usan con C-PLUG. Cuando se usa con C-PLUG, los dispositivos usan la clave RSA privada embebida que se env\u00eda con la imagen del firmware. Un atacante podr\u00eda aprovechar esta situaci\u00f3n en una situaci\u00f3n de man-in-the-middle y descifrar el tr\u00e1fico capturado previamente"
}
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"baseScore": 4.3,
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"vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
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"exploitabilityScore": 8.6,
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{
"source": "productcert@siemens.com",
"tags": [
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"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-274900.pdf"
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"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-012-02"
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"value": "CWE-321"
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],
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}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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