{
  "id": "CVE-2020-28026",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2021-05-06T13:15:09.777",
  "lastModified": "2022-07-12T17:42:04.277",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters, relevant in non-default configurations that enable Delivery Status Notification (DSN). Certain uses of ORCPT= can place a newline into a spool header file, and indirectly allow unauthenticated remote attackers to execute arbitrary commands as root."
    },
    {
      "lang": "es",
      "value": "Exim 4 versiones anteriores a 4.94.2, presenta una Neutralizaci\u00f3n Inapropiada de Delimitadores de L\u00ednea, relevante en configuraciones no predeterminadas que habilitan la Delivery Status Notification (DSN). Determinados usos de ORCPT= pueden colocar una nueva l\u00ednea en un archivo de encabezado spool e indirectamente permitir que atacantes remotos no autenticados ejecutarn comandos arbitrarios como root"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
          "accessVector": "NETWORK",
          "accessComplexity": "MEDIUM",
          "authentication": "NONE",
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 9.3
        },
        "baseSeverity": "HIGH",
        "exploitabilityScore": 8.6,
        "impactScore": 10.0,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "4.00",
              "versionEndExcluding": "4.94.2",
              "matchCriteriaId": "E0B1EAB0-1202-4BB9-94AF-CC07299D0256"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28026-FGETS.txt",
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ]
    }
  ]
}