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CVE-2022-42705

Estado: ModificadaMedia (6.5)—

A use-after-free in res_pjsip_pubsub.c in Sangoma Asterisk 16.28, 18.14, 19.6, and certified/18.9-cert2 may allow a remote authenticated attacker to crash Asterisk (denial of service) by performing activity on a subscription via a reliable transport at the same time that Asterisk is also performing activity on that subscription.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

Sangoma — AsteriskSangoma — Certified Asterisk

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2022-42705",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-42705",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-04-24T14:25:02.691799Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      },
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2022-12-05T21:15:10.177",
  "references": [
    {
      "url": "https://downloads.asterisk.org/pub/security/AST-2022-008.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2023/02/msg00029.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.debian.org/security/2023/dsa-5358",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://downloads.asterisk.org/pub/security/AST-2022-008.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2023/02/msg00029.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.debian.org/security/2023/dsa-5358",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A use-after-free in res_pjsip_pubsub.c in Sangoma Asterisk 16.28, 18.14, 19.6, and certified/18.9-cert2 may allow a remote authenticated attacker to crash Asterisk (denial of service) by performing activity on a subscription via a reliable transport at the same time that Asterisk is also performing activity on that subscription."
    },
    {
      "lang": "es",
      "value": "Un use after free en res_pjsip_pubsub.c en Sangoma Asterisk 16.28, 18.14, 19.6 y certificado/18.9-cert2 puede permitir que un atacante remoto autenticado bloquee Asterisk (denegación de servicio) al realizar actividad en una suscripción a través de un transporte confiable en al mismo tiempo que Asterisk también realiza actividad en esa suscripción."
    }
  ],
  "lastModified": "2026-06-17T05:05:09.760",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3632620E-8A6D-4D65-BED9-80C0E7CEA8DD",
              "versionEndExcluding": "16.29.1",
              "versionStartIncluding": "16.0.0"
            },
            {
              "criteria": "cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "667B21FC-79F4-47C6-A116-84D6A6CB34FA",
              "versionEndExcluding": "18.15.1",
              "versionStartIncluding": "18.14.0"
            },
            {
              "criteria": "cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A26F9A47-00F4-4A96-B679-E8D68E842E32",
              "versionEndExcluding": "19.7.1",
              "versionStartIncluding": "19.6.0"
            },
            {
              "criteria": "cpe:2.3:a:sangoma:asterisk:20.0.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "ADB799D3-B6BE-468C-8D3E-B087ED287B24"
            },
            {
              "criteria": "cpe:2.3:a:sangoma:certified_asterisk:18.9:cert2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "892BAE5D-A64E-4FE0-9A99-8C07F342A042"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}