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CVE-2018-5243

Estado: ModificadaAlta (7.5)—

The Symantec Encryption Management Server (SEMS) product, prior to version 3.4.2 MP1, may be susceptible to a denial of service (DoS) exploit. A DoS attack is a type of attack whereby the perpetrator attempts to make a particular machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a specific host within a network.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Symantec — Encryption Management Server

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2018-5243",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "secure@symantec.com",
      "affectedData": [
        {
          "vendor": "Symantec Corporation",
          "product": "Symantec Encryption Management Server (SEMS)",
          "versions": [
            {
              "status": "affected",
              "version": "Prior to 3.4.2 MP1"
            }
          ]
        }
      ]
    }
  ],
  "published": "2018-08-20T18:29:00.230",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/105062",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "secure@symantec.com"
    },
    {
      "url": "http://www.securitytracker.com/id/1041527",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "secure@symantec.com"
    },
    {
      "url": "https://support.symantec.com/en_US/article.SYMSA1458.html",
      "tags": [
        "Mitigation",
        "Vendor Advisory"
      ],
      "source": "secure@symantec.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/105062",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1041527",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://support.symantec.com/en_US/article.SYMSA1458.html",
      "tags": [
        "Mitigation",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Symantec Encryption Management Server (SEMS) product, prior to version 3.4.2 MP1, may be susceptible to a denial of service (DoS) exploit. A DoS attack is a type of attack whereby the perpetrator attempts to make a particular machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a specific host within a network."
    },
    {
      "lang": "es",
      "value": "El producto Symantec Encryption Management Server (SEMS) en versiones anteriores a la versión 3.4.2 MP1, puede ser susceptible a una denegación de servicio (DoS). Un ataque DoS es un tipo de ataque en el que el infractor intenta hacer que un dispositivo o recurso de red en concreto se vuelva inutilizable para sus usuarios originales mediante la interrupción temporal o indefinida de un host específico en una red."
    }
  ],
  "lastModified": "2026-06-17T01:59:54.303",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:symantec:encryption_management_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "25EDB9F4-AC96-4380-AB50-B258F1A09F30",
              "versionEndIncluding": "3.4.2"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secure@symantec.com"
}