{
  "id": "CVE-2015-2689",
  "sourceIdentifier": "security@debian.org",
  "published": "2020-01-24T18:15:12.317",
  "lastModified": "2024-11-21T02:27:51.480",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Tor before 0.2.4.26 and 0.2.5.x before 0.2.5.11 does not properly handle pending-connection resolve states during periods of high DNS load, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via crafted packets."
    },
    {
      "lang": "es",
      "value": "Tor versiones anteriores a 0.2.4.26 y versiones 0.2.5.x anteriores a 0.2.5.11, no maneja apropiadamente los estados de resoluci\u00f3n de conexi\u00f3n pendiente durante los per\u00edodos de alta carga DNS, lo que permite a atacantes remotos causar una denegaci\u00f3n de servicio (falla de aserci\u00f3n y salida del demonio) por medio de paquetes."
    }
  ],
  "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:N/I:N/A:H",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "baseScore": 5.0,
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "PARTIAL"
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "0.2.4.26",
              "matchCriteriaId": "55010D56-46F9-4EA3-BD8B-8C29380DEC2F"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "0.2.5.1",
              "versionEndExcluding": "0.2.5.11",
              "matchCriteriaId": "969C5514-4DB6-4AF4-899C-3AF13C248B80"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://lists.torproject.org/pipermail/tor-talk/2015-March/037281.html",
      "source": "security@debian.org",
      "tags": [
        "Mailing List",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://trac.torproject.org/projects/tor/ticket/14129",
      "source": "security@debian.org",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://lists.torproject.org/pipermail/tor-talk/2015-March/037281.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://trac.torproject.org/projects/tor/ticket/14129",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ]
    }
  ]
}