{
  "id": "CVE-2007-4103",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2007-07-31T10:17:00.000",
  "lastModified": "2024-02-08T20:12:32.380",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The IAX2 channel driver (chan_iax2) in Asterisk Open 1.2.x before 1.2.23, 1.4.x before 1.4.9, and Asterisk Appliance Developer Kit before 0.6.0, when configured to allow unauthenticated calls, allows remote attackers to cause a denial of service (resource exhaustion) via a flood of calls that do not complete a 3-way handshake, which causes an ast_channel to be allocated but not released."
    },
    {
      "lang": "es",
      "value": "El controlador de canal IAX2 (chan_iax2) de Asterisk Open 1.2.x anterior a 1.2.23, 1.4.x anterior a 1.4.9, y Asterisk Appliance Developer Kit anterior a 0.6.0, cuando est\u00e1 configurado para permitir llamadas no autenticadas, permite a atacantes remotos provocar una denegaci\u00f3n de servicio (agotamiento de recursos) mediante una inundaci\u00f3n de llamadas que no completan la negociaci\u00f3n de 3 pasos, lo cual provoca que se reserve un canal ast_channel pero no se libere."
    }
  ],
  "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",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "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:C",
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 7.8
        },
        "baseSeverity": "HIGH",
        "exploitabilityScore": 10.0,
        "impactScore": 6.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-772"
        }
      ]
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  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "1.2.20",
              "versionEndExcluding": "1.2.23",
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              "vulnerable": true,
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              "criteria": "cpe:2.3:a:digium:asterisk_appliance_developer_kit:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "0.6.0",
              "matchCriteriaId": "1EB3B452-3577-44C9-AD6C-14982AD5E4A2"
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  ],
  "references": [
    {
      "url": "http://bugs.gentoo.org/show_bug.cgi?id=185713",
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    {
      "url": "http://www.securityfocus.com/archive/1/475069/100/0/threaded",
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    {
      "url": "http://www.vupen.com/english/advisories/2007/2701",
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}