CVE-2021-40368 (GCVE-0-2021-40368)

Vulnerability from cvelistv5 – Published: 2022-04-12 09:07 – Updated: 2025-04-21 13:54
VLAI
Summary
A vulnerability has been identified in SIMATIC S7-400 CPU 412-1 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 414-2 DP V7 (All versions), SIMATIC S7-400 CPU 414-3 DP V7 (All versions), SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416-2 DP V7 (All versions), SIMATIC S7-400 CPU 416-3 DP V7 (All versions), SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416F-2 DP V7 (All versions), SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 417-4 DP V7 (All versions), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.10), SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) (All versions < V10.1), SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) (All versions < V8.2.3), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 V7 (All versions), SIPLUS S7-400 CPU 417-4 V7 (All versions). Affected devices improperly handle specially crafted packets sent to port 102/tcp. This could allow an attacker to create a Denial-of-Service condition. A restart is needed to restore normal operations.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-18 15:12 UTC
CWE
  • CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Impacted products
Vendor Product Version CPE status
Siemens SIMATIC S7-400 CPU 412-1 DP V7 Affected: All versions
guessed Create a notification for this product.
Siemens SIMATIC S7-400 CPU 412-2 DP V7 Affected: All versions
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Siemens SIMATIC S7-400 CPU 412-2 PN/DP V7 Affected: All versions < V7.0.3
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Siemens SIMATIC S7-400 CPU 414-2 DP V7 Affected: All versions
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Siemens SIMATIC S7-400 CPU 414-3 DP V7 Affected: All versions
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Siemens SIMATIC S7-400 CPU 414-3 PN/DP V7 Affected: All versions < V7.0.3
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Siemens SIMATIC S7-400 CPU 414F-3 PN/DP V7 Affected: All versions < V7.0.3
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Siemens SIMATIC S7-400 CPU 416-2 DP V7 Affected: All versions
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Siemens SIMATIC S7-400 CPU 416-3 DP V7 Affected: All versions
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Siemens SIMATIC S7-400 CPU 416-3 PN/DP V7 Affected: All versions < V7.0.3
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Siemens SIMATIC S7-400 CPU 416F-2 DP V7 Affected: All versions
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Siemens SIMATIC S7-400 CPU 416F-3 PN/DP V7 Affected: All versions < V7.0.3
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Siemens SIMATIC S7-400 CPU 417-4 DP V7 Affected: All versions
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Siemens SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) Affected: All versions < V6.0.10
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Siemens SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) Affected: All versions < V10.1
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Siemens SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) Affected: All versions < V8.2.3
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Siemens SIPLUS S7-400 CPU 414-3 PN/DP V7 Affected: All versions < V7.0.3
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Siemens SIPLUS S7-400 CPU 416-3 PN/DP V7 Affected: All versions < V7.0.3
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Siemens SIPLUS S7-400 CPU 416-3 V7 Affected: All versions
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Siemens SIPLUS S7-400 CPU 417-4 V7 Affected: All versions
guessed Create a notification for this product.
Show details on NVD website

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          "value": "Se ha identificado una vulnerabilidad en la familia de CPUs SIMATIC S7-400 H V6 (incluidas las variantes SIPLUS) (todas las versiones anteriores a V6.0.10), la familia de CPUs SIMATIC S7-400 PN/DP V7 (incluidas las variantes SIPLUS) (todas las versiones), la familia de CPUs SIMATIC S7-410 V10 (incluidas las variantes SIPLUS) (todas las versiones anteriores a V10.1) y la familia de CPUs SIMATIC S7-410 V8 (incluidas las variantes SIPLUS) (todas las versiones anteriores a V8.2.3). Los dispositivos afectados manejan incorrectamente paquetes especialmente dise\u00f1ados enviados al puerto 102/tcp. Esto podr\u00eda permitir a un atacante crear una condici\u00f3n de denegaci\u00f3n de servicio. Se necesita un reinicio para restaurar las operaciones normales"
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      "lastModified": "2024-11-21T06:23:58.173",
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            "value": "A vulnerability has been identified in  SIMATIC S7-400 CPU 412-1 DP V7 (All versions),  SIMATIC S7-400 CPU 412-2 DP V7 (All versions),  SIMATIC S7-400 CPU 412-2 PN/DP V7 (All versions \u003c V7.0.3),  SIMATIC S7-400 CPU 414-2 DP V7 (All versions),  SIMATIC S7-400 CPU 414-3 DP V7 (All versions),  SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions \u003c V7.0.3),  SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions \u003c V7.0.3),  SIMATIC S7-400 CPU 416-2 DP V7 (All versions),  SIMATIC S7-400 CPU 416-3 DP V7 (All versions),  SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions \u003c V7.0.3),  SIMATIC S7-400 CPU 416F-2 DP V7 (All versions),  SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions \u003c V7.0.3),  SIMATIC S7-400 CPU 417-4 DP V7 (All versions), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions \u003c V6.0.10), SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) (All versions \u003c V10.1), SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) (All versions \u003c V8.2.3), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions \u003c V7.0.3), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions \u003c V7.0.3), SIPLUS S7-400 CPU 416-3 V7 (All versions), SIPLUS S7-400 CPU 417-4 V7 (All versions). Affected devices improperly handle specially crafted packets sent to port 102/tcp.\n\nThis could allow an attacker to create a Denial-of-Service condition. A restart is needed to restore normal operations."
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            "lang": "es",
            "value": "Se ha identificado una vulnerabilidad en la familia de CPUs SIMATIC S7-400 H V6 (incluidas las variantes SIPLUS) (todas las versiones anteriores a V6.0.10), la familia de CPUs SIMATIC S7-400 PN/DP V7 (incluidas las variantes SIPLUS) (todas las versiones), la familia de CPUs SIMATIC S7-410 V10 (incluidas las variantes SIPLUS) (todas las versiones anteriores a V10.1) y la familia de CPUs SIMATIC S7-410 V8 (incluidas las variantes SIPLUS) (todas las versiones anteriores a V8.2.3). Los dispositivos afectados manejan incorrectamente paquetes especialmente dise\u00f1ados enviados al puerto 102/tcp. Esto podr\u00eda permitir a un atacante crear una condici\u00f3n de denegaci\u00f3n de servicio. Se necesita un reinicio para restaurar las operaciones normales"
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                }
              ]
            },
            {
              "defaultStatus": "unknown",
              "product": "SIPLUS S7-400 CPU 414-3 PN/DP V7",
              "vendor": "Siemens",
              "versions": [
                {
                  "status": "affected",
                  "version": "All versions \u003c V7.0.3"
                }
              ]
            },
            {
              "defaultStatus": "unknown",
              "product": "SIPLUS S7-400 CPU 416-3 PN/DP V7",
              "vendor": "Siemens",
              "versions": [
                {
                  "status": "affected",
                  "version": "All versions \u003c V7.0.3"
                }
              ]
            },
            {
              "defaultStatus": "unknown",
              "product": "SIPLUS S7-400 CPU 416-3 V7",
              "vendor": "Siemens",
              "versions": [
                {
                  "status": "affected",
                  "version": "All versions"
                }
              ]
            },
            {
              "defaultStatus": "unknown",
              "product": "SIPLUS S7-400 CPU 417-4 V7",
              "vendor": "Siemens",
              "versions": [
                {
                  "status": "affected",
                  "version": "All versions"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "A vulnerability has been identified in  SIMATIC S7-400 CPU 412-1 DP V7 (All versions),  SIMATIC S7-400 CPU 412-2 DP V7 (All versions),  SIMATIC S7-400 CPU 412-2 PN/DP V7 (All versions \u003c V7.0.3),  SIMATIC S7-400 CPU 414-2 DP V7 (All versions),  SIMATIC S7-400 CPU 414-3 DP V7 (All versions),  SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions \u003c V7.0.3),  SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions \u003c V7.0.3),  SIMATIC S7-400 CPU 416-2 DP V7 (All versions),  SIMATIC S7-400 CPU 416-3 DP V7 (All versions),  SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions \u003c V7.0.3),  SIMATIC S7-400 CPU 416F-2 DP V7 (All versions),  SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions \u003c V7.0.3),  SIMATIC S7-400 CPU 417-4 DP V7 (All versions), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions \u003c V6.0.10), SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants) (All versions \u003c V10.1), SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) (All versions \u003c V8.2.3), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions \u003c V7.0.3), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions \u003c V7.0.3), SIPLUS S7-400 CPU 416-3 V7 (All versions), SIPLUS S7-400 CPU 417-4 V7 (All versions). Affected devices improperly handle specially crafted packets sent to port 102/tcp.\n\nThis could allow an attacker to create a Denial-of-Service condition. A restart is needed to restore normal operations."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C",
                "version": "3.1"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-119",
                  "description": "CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2023-04-11T09:02:03.176Z",
            "orgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
            "shortName": "siemens"
          },
          "references": [
            {
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-557541.pdf"
            }
          ]
        }
      },
      "cveMetadata": {
        "assignerOrgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
        "assignerShortName": "siemens",
        "cveId": "CVE-2021-40368",
        "datePublished": "2022-04-12T09:07:23.000Z",
        "dateReserved": "2021-09-01T00:00:00.000Z",
        "dateUpdated": "2025-04-21T13:54:27.056Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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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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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