fkie_cve-2021-26713
Vulnerability from fkie_nvd
Published
2021-02-19 20:15
Modified
2024-11-21 05:56
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
A stack-based buffer overflow in res_rtp_asterisk.c in Sangoma Asterisk before 16.16.1, 17.x before 17.9.2, and 18.x before 18.2.1 and Certified Asterisk before 16.8-cert6 allows an authenticated WebRTC client to cause an Asterisk crash by sending multiple hold/unhold requests in quick succession. This is caused by a signedness comparison mismatch.
References
cve@mitre.orghttps://downloads.asterisk.org/pub/security/Vendor Advisory
cve@mitre.orghttps://downloads.asterisk.org/pub/security/AST-2021-004.htmlVendor Advisory
cve@mitre.orghttps://issues.asterisk.org/jira/browse/ASTERISK-29205Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://downloads.asterisk.org/pub/security/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://downloads.asterisk.org/pub/security/AST-2021-004.htmlVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://issues.asterisk.org/jira/browse/ASTERISK-29205Vendor Advisory
Impacted products
Vendor Product Version
digium asterisk *
digium asterisk *
digium asterisk *
digium certified_asterisk 16.8
digium certified_asterisk 16.8
digium certified_asterisk 16.8
digium certified_asterisk 16.8
digium certified_asterisk 16.8
digium certified_asterisk 16.8
digium certified_asterisk 16.8
digium certified_asterisk 16.8
digium certified_asterisk 16.8
digium certified_asterisk 16.8
digium certified_asterisk 16.8
digium certified_asterisk 16.8
digium certified_asterisk 16.8


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7382B641-0396-456F-BF33-3F6412E35F2D",
              "versionEndExcluding": "16.16.1",
              "versionStartIncluding": "16.0.0",
              "vulnerable": true
            },
            {
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              "versionStartIncluding": "17.0.0",
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            },
            {
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              "versionEndExcluding": "18.2.1",
              "versionStartIncluding": "18.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:-:*:*:*:*:*:*",
              "matchCriteriaId": "81C3E390-8B99-4EB8-82DD-02893611209A",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "17DB2297-1908-4F87-8046-2BAA74569D71",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "CEA2CC40-C2F6-4828-82F0-1B50D3E61F77",
              "vulnerable": true
            },
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              "matchCriteriaId": "32F19F43-C1E8-4B6C-9356-AF355B7320BD",
              "vulnerable": true
            },
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              "matchCriteriaId": "21D1FA32-B441-485F-8AE9-F3A394626909",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "F7795CCF-B160-4B4F-9529-1192C11D7FDB",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "0C5E5D0D-9EB3-40FD-8B7E-E93A95D07AB1",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "C7DFDA30-DD61-4BBC-AFE4-448BF2A4F303",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "142F1F89-49AC-4A0B-A273-61F697063A5A",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "53041795-788C-4914-A2F6-41539ABE0244",
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            },
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              "matchCriteriaId": "769C854C-03CD-40A9-B39B-C0CDCA8252EA",
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            },
            {
              "criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert5:*:*:*:*:*:*",
              "matchCriteriaId": "6D86AD6E-4E07-48B0-88D8-E18F277FFE6A",
              "vulnerable": true
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          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A stack-based buffer overflow in res_rtp_asterisk.c in Sangoma Asterisk before 16.16.1, 17.x before 17.9.2, and 18.x before 18.2.1 and Certified Asterisk before 16.8-cert6 allows an authenticated WebRTC client to cause an Asterisk crash by sending multiple hold/unhold requests in quick succession. This is caused by a signedness comparison mismatch."
    },
    {
      "lang": "es",
      "value": "Un desbordamiento del b\u00fafer en la regi\u00f3n stack de la memoria en el archivo res_rtp_asterisk.c en Sangoma Asterisk versiones anteriores a 16.16.1, versiones 17.x anteriores a 17.9.2 y versiones 18.x anteriores a 18.2.1 y Certified Asterisk versiones anteriores a 16.8-cert6, permite a un cliente WebRTC autenticado causar un bloqueo de Asterisk mediante el env\u00edo de m\u00faltiples peticiones de hold/unhold en una sucesi\u00f3n r\u00e1pida.\u0026#xa0;Esto es causado por una discrepancia en la comparaci\u00f3n de firmas"
    }
  ],
  "id": "CVE-2021-26713",
  "lastModified": "2024-11-21T05:56:43.707",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-02-19T20:15:13.193",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://downloads.asterisk.org/pub/security/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://downloads.asterisk.org/pub/security/AST-2021-004.html"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://issues.asterisk.org/jira/browse/ASTERISK-29205"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://downloads.asterisk.org/pub/security/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://downloads.asterisk.org/pub/security/AST-2021-004.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://issues.asterisk.org/jira/browse/ASTERISK-29205"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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