{
  "id": "CVE-2020-35776",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2021-02-18T20:15:12.447",
  "lastModified": "2021-02-24T17:43:09.037",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "A buffer overflow in res_pjsip_diversion.c in Sangoma Asterisk versions 13.38.1, 16.15.1, 17.9.1, and 18.1.1 allows remote attacker to crash Asterisk by deliberately misusing SIP 181 responses."
    },
    {
      "lang": "es",
      "value": "Un desbordamiento del b\u00fafer en el archivo res_pjsip_diversion.c en Sangoma Asterisk versiones 13.38.1, 16.15.1, 17.9.1 y 18.1.1, permite a un atacante remoto bloquear Asterisk al hacer un uso inapropiado deliberadamente de las respuestas SIP 181"
    }
  ],
  "metrics": {
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      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
          "accessVector": "NETWORK",
          "accessComplexity": "MEDIUM",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.3
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 8.6,
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        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
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  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-120"
        }
      ]
    }
  ],
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    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*",
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  "references": [
    {
      "url": "http://packetstormsecurity.com/files/161470/Asterisk-Project-Security-Advisory-AST-2021-001.html",
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Third Party Advisory"
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    },
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      "url": "http://seclists.org/fulldisclosure/2021/Feb/57",
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    },
    {
      "url": "https://downloads.asterisk.org/pub/security/AST-2021-001.html",
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    {
      "url": "https://issues.asterisk.org/jira/browse/ASTERISK-29227",
      "source": "cve@mitre.org",
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        "Issue Tracking",
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}