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CVE-2017-8802

Estado: ModificadaMedia (5.4)—💥 PoC

Cross-site scripting (XSS) vulnerability in Zimbra Collaboration Suite (aka ZCS) before 8.8.0 Beta2 might allow remote attackers to inject arbitrary web script or HTML via vectors related to the "Show Snippet" functionality.

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).

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.

Tecnologías afectadas (1)

Synocor — Zimbra Collaboration Suite

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2017-8802",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 3.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.0",
          "baseScore": 5.4,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 2.3
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2018-01-16T19:29:01.480",
  "references": [
    {
      "url": "http://www.securityfocus.com/archive/1/541661/100/0/threaded",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://bugzilla.zimbra.com/show_bug.cgi?id=107925",
      "tags": [
        "Permissions Required"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.compass-security.com/fileadmin/Datein/Research/Advisories/CSNC-2018-001_zimbra_stored_xss.txt",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/541661/100/0/threaded",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugzilla.zimbra.com/show_bug.cgi?id=107925",
      "tags": [
        "Permissions Required"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.compass-security.com/fileadmin/Datein/Research/Advisories/CSNC-2018-001_zimbra_stored_xss.txt",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Cross-site scripting (XSS) vulnerability in Zimbra Collaboration Suite (aka ZCS) before 8.8.0 Beta2 might allow remote attackers to inject arbitrary web script or HTML via vectors related to the \"Show Snippet\" functionality."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de Cross-Site Scripting (XSS) en Zimbra Collaboration Suite (también conocido como ZCS) en versiones anteriores a la 8.8.0 Beta2 puede permitir que los atacantes remotos inyecten scripts web o HTML arbitrarios mediante vectores relacionados con la funcionalidad \"Show Snippet\"."
    }
  ],
  "lastModified": "2026-06-17T01:26:59.243",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:synocor:zimbra_collaboration_suite:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "289718C8-9E62-419A-A882-252CFCB152D4",
              "versionEndIncluding": "8.7.11"
            },
            {
              "criteria": "cpe:2.3:a:synocor:zimbra_collaboration_suite:8.8.0:beta1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C23673FA-DC03-4586-A175-690B3328E7B1"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}