{
  "id": "CVE-2022-33989",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2022-08-15T13:15:18.273",
  "lastModified": "2022-08-18T16:53:15.373",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "dproxy-nexgen (aka dproxy nexgen) uses a static UDP source port (selected randomly only at boot time) in upstream queries sent to DNS resolvers. This allows DNS cache poisoning because there is not enough entropy to prevent traffic injection attacks."
    },
    {
      "lang": "es",
      "value": "dproxy-nexgen (tambi\u00e9n se conoce como dproxy nexgen) usa un puerto de origen UDP est\u00e1tico (seleccionado aleatoriamente s\u00f3lo en el momento del arranque) en las consultas ascendentes enviadas a resolvedores de DNS. Esto permite el envenenamiento de la cach\u00e9 de DNS porque no se presenta suficiente entrop\u00eda para evitar los ataques de inyecci\u00f3n de tr\u00e1fico."
    }
  ],
  "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:L/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-331"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:dproxy-nexgen_project:dproxy-nexgen:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "579888EE-A999-4603-97EF-740C042004B5"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://sourceforge.net/projects/dproxy/",
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.openwall.com/lists/oss-security/2022/08/14/3",
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Mailing List",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://www.usenix.org/conference/usenixsecurity22/presentation/jeitner",
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ]
    }
  ]
}