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FKIE_CVE-2018-8929

Vulnerability from fkie_nvd - Published: 2018-07-06 12:29 - Updated: 2026-06-17 02:05
Severity
7.3 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
8.1 (High) - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Improper restriction of communication channel to intended endpoints vulnerability in HTTP daemon in Synology SSL VPN Client before 1.2.4-0224 allows remote attackers to conduct man-in-the-middle attacks via a crafted payload.
References
security@synology.comhttps://www.synology.com/en-global/support/security/Synology_SA_18_19Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.synology.com/en-global/support/security/Synology_SA_18_19Vendor Advisory
Impacted products
Vendor Product Version
synology ssl_vpn_client *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "SSL VPN Client",
          "vendor": "Synology",
          "versions": [
            {
              "lessThan": "1.2.4-0224",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security@synology.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:synology:ssl_vpn_client:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "AAB540CD-776E-4819-B79E-82B141AA1275",
              "versionEndExcluding": "1.2.4-0224",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper restriction of communication channel to intended endpoints vulnerability in HTTP daemon in Synology SSL VPN Client before 1.2.4-0224 allows remote attackers to conduct man-in-the-middle attacks via a crafted payload."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de restricci\u00f3n indebida del canal de comunicaci\u00f3n en los endpoints planeados en el demonio HTTP en Synology SSL VPN Client en versiones anteriores a la 1.2.4-0224 permite que atacantes remotos lleven a cabo ataques Man-in-the-Middle (MitM) mediante una carga \u00fatil manipulada."
    }
  ],
  "id": "CVE-2018-8929",
  "lastModified": "2026-06-17T02:05:40.317",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.8,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 7.3,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.4,
        "source": "security@synology.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2018-07-06T12:29:00.210",
  "references": [
    {
      "source": "security@synology.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.synology.com/en-global/support/security/Synology_SA_18_19"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.synology.com/en-global/support/security/Synology_SA_18_19"
    }
  ],
  "sourceIdentifier": "security@synology.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-319"
        }
      ],
      "source": "security@synology.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-417"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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