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FKIE_CVE-2018-7284

Vulnerability from fkie_nvd - Published: 2018-02-22 00:29 - Updated: 2026-06-17 02:02
Severity
7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
A Buffer Overflow issue was discovered in Asterisk through 13.19.1, 14.x through 14.7.5, and 15.x through 15.2.1, and Certified Asterisk through 13.18-cert2. When processing a SUBSCRIBE request, the res_pjsip_pubsub module stores the accepted formats present in the Accept headers of the request. This code did not limit the number of headers it processed, despite having a fixed limit of 32. If more than 32 Accept headers were present, the code would write outside of its memory and cause a crash.
References
cve@mitre.orghttp://downloads.asterisk.org/pub/security/AST-2018-004.htmlPatch, Vendor Advisory
cve@mitre.orghttp://www.securityfocus.com/bid/103151Third Party Advisory, VDB Entry
cve@mitre.orghttp://www.securitytracker.com/id/1040416Third Party Advisory, VDB Entry
cve@mitre.orghttps://www.debian.org/security/2018/dsa-4320Third Party Advisory
cve@mitre.orghttps://www.exploit-db.com/exploits/44184/Exploit, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://downloads.asterisk.org/pub/security/AST-2018-004.htmlPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/103151Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1040416Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2018/dsa-4320Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/44184/Exploit, Third Party Advisory, VDB Entry
Impacted products
Vendor Product Version
digium asterisk *
digium asterisk *
digium asterisk *
digium certified_asterisk 13.18
digium certified_asterisk 13.18
digium certified_asterisk *
debian debian_linux 9.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
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              "matchCriteriaId": "E88E5DD3-A16C-4026-A7E3-02C5C8AEFA0C",
              "versionEndIncluding": "13.19.1",
              "vulnerable": true
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          "operator": "OR"
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              "matchCriteriaId": "C3F701AA-E842-4680-9747-000C3A4F6E4B",
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              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A Buffer Overflow issue was discovered in Asterisk through 13.19.1, 14.x through 14.7.5, and 15.x through 15.2.1, and Certified Asterisk through 13.18-cert2. When processing a SUBSCRIBE request, the res_pjsip_pubsub module stores the accepted formats present in the Accept headers of the request. This code did not limit the number of headers it processed, despite having a fixed limit of 32. If more than 32 Accept headers were present, the code would write outside of its memory and cause a crash."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto un problema de desbordamiento de b\u00fafer en Asterisk hasta la versi\u00f3n 13.19.1; versiones 14.x anteriores a la 14.7.5 y las versiones 15.x anteriores a la 15.2.1, as\u00ed como Certified Asterisk hasta la versi\u00f3n 13.18-cert2. Al procesar una petici\u00f3n SUBSCRIBE, el m\u00f3dulo res_pjsip_pubsub almacena los formatos aceptados presentes en las cabeceras Accept de la petici\u00f3n. Este c\u00f3digo no limitaba el n\u00famero de cabeceras que procesaba, a pesar de tener un l\u00edmite fijado en 32. Si estuviesen presentes m\u00e1s de 32 cabeceras Accept, el c\u00f3digo escribir\u00eda fuera de la memoria y provocar\u00eda un cierre inesperado."
    }
  ],
  "id": "CVE-2018-7284",
  "lastModified": "2026-06-17T02:02:57.187",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2018-02-22T00:29:01.000",
  "references": [
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      "source": "cve@mitre.org",
      "tags": [
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      "url": "http://downloads.asterisk.org/pub/security/AST-2018-004.html"
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      "url": "http://www.securityfocus.com/bid/103151"
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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        "Vendor Advisory"
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "http://www.securityfocus.com/bid/103151"
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://www.exploit-db.com/exploits/44184/"
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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