FKIE_CVE-2014-2251

Vulnerability from fkie_nvd - Published: 2014-03-16 14:06 - Updated: 2025-04-12 10:46
Severity ?
Summary
The random-number generator on Siemens SIMATIC S7-1500 CPU PLC devices with firmware before 1.5.0 does not have sufficient entropy, which makes it easier for remote attackers to defeat cryptographic protection mechanisms and hijack sessions via unspecified vectors.
References
cve@mitre.orghttp://ics-cert.us-cert.gov/advisories/ICSA-14-073-01US Government Resource
cve@mitre.orghttp://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-456423.pdfPatch, Vendor Advisory
cve@mitre.orghttps://cert-portal.siemens.com/productcert/pdf/ssa-456423.pdf
af854a3a-2127-422b-91ae-364da2661108http://ics-cert.us-cert.gov/advisories/ICSA-14-073-01US Government Resource
af854a3a-2127-422b-91ae-364da2661108http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-456423.pdfPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-456423.pdf
Impacted products
Vendor Product Version
siemens simatic_s7-1500_cpu_firmware *
siemens simatic_s7-1500_cpu_firmware 1.0.1
siemens simatic_s7-1500_cpu_firmware 1.1.0
siemens simatic_s7-1500_cpu_firmware 1.1.1
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{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:siemens:simatic_s7-1500_cpu_firmware:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1F9DE401-8833-4BBC-A9F9-6275484C932C",
              "versionEndIncluding": "1.1.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:siemens:simatic_s7-1500_cpu_firmware:1.0.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "00673095-ABE2-44E9-B032-3C0D9FD4DADC",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:siemens:simatic_s7-1500_cpu_firmware:1.1.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "B7034B3A-0E68-46CB-B481-A644CAF26855",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "ABE40AA5-31F1-42E7-9C96-EB0812EA699D",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The random-number generator on Siemens SIMATIC S7-1500 CPU PLC devices with firmware before 1.5.0 does not have sufficient entropy, which makes it easier for remote attackers to defeat cryptographic protection mechanisms and hijack sessions via unspecified vectors."
    },
    {
      "lang": "es",
      "value": "El generador de n\u00fameros aleatorios en dispositivos de Siemens SIMATIC S7-1500 CPU PLC con firmware anterior a 1.5.0 no tiene suficiente entrop\u00eda, lo que facilita a atacantes remotos derrotar mecanismos de protecci\u00f3n criptogr\u00e1ficos y secuestrar sesiones a trav\u00e9s de vectores no especificados."
    }
  ],
  "evaluatorComment": "CWE-331: Insufficient Entropy",
  "id": "CVE-2014-2251",
  "lastModified": "2025-04-12T10:46:40.837",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 8.3,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 8.5,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ]
  },
  "published": "2014-03-16T14:06:45.867",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "US Government Resource"
      ],
      "url": "http://ics-cert.us-cert.gov/advisories/ICSA-14-073-01"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-456423.pdf"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-456423.pdf"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "tags": [
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-456423.pdf"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • 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.
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Detection rules are retrieved from Rulezet.