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CVE-2019-19999

Estado: ModificadaAlta (7.2)—

Halo before 1.2.0-beta.1 allows Server Side Template Injection (SSTI) because TemplateClassResolver.SAFER_RESOLVER is not used in the FreeMarker configuration.

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)

Halo — Halo

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2019-19999",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.2,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.2
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2019-12-26T04:15:10.923",
  "references": [
    {
      "url": "https://github.com/halo-dev/halo/compare/v1.1.3-beta.2...v1.2.0-beta.1",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/halo-dev/halo/issues/419",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/halo-dev/halo/issues/440",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/halo-dev/halo/compare/v1.1.3-beta.2...v1.2.0-beta.1",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/halo-dev/halo/issues/419",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/halo-dev/halo/issues/440",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Halo before 1.2.0-beta.1 allows Server Side Template Injection (SSTI) because TemplateClassResolver.SAFER_RESOLVER is not used in the FreeMarker configuration."
    },
    {
      "lang": "es",
      "value": "Halo en versiones anteriores a la 1.2.0-beta.1 permite la inyección de plantillas del lado del servidor (SSTI) porque TemplateClassResolver.SAFER_RESOLVER no se utiliza en la configuración de FreeMarker."
    }
  ],
  "lastModified": "2026-06-17T02:27:34.460",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:halo:halo:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DD55ABB0-278F-4658-A126-C9D20F58B59E",
              "versionEndIncluding": "1.1.1"
            },
            {
              "criteria": "cpe:2.3:a:halo:halo:1.1.3:beta1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6EDDDECE-AD8E-48A2-9C98-19508FD420CF"
            },
            {
              "criteria": "cpe:2.3:a:halo:halo:1.1.3:beta2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "056A7C1F-FFA3-4819-B1CA-45B2BBFAE836"
            },
            {
              "criteria": "cpe:2.3:a:halo:halo:1.2.0:beta1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "09521C51-ED35-45A0-B58D-3E866D07EBF3"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}