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CVE-2021-32919

Estado: ModificadaAlta (7.5)—

Se detectó un problema en Prosody versiones anteriores a 0.11.9. La opción no documentada dialback_without_dialback en la función mod_dialback habilita una funcionalidad experimental para la autenticación de servidor a servidor. No autentica correctamente los certificados de servidor remoto, permitiendo que un servidor remoto suplante a otro servidor (cuando esta opción está habilitada)

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 (3)

Debian — Debian LinuxFedoraproject — FedoraProsody — Prosody

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-32919",
  "cveTags": [],
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          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
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          "userInteraction": "NONE",
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  "published": "2021-05-13T16:15:08.347",
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      "description": [
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          "lang": "en",
          "value": "CWE-295"
        }
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    {
      "lang": "en",
      "value": "An issue was discovered in Prosody before 0.11.9. The undocumented dialback_without_dialback option in mod_dialback enables an experimental feature for server-to-server authentication. It does not correctly authenticate remote server certificates, allowing a remote server to impersonate another server (when this option is enabled)."
    },
    {
      "lang": "es",
      "value": "Se detectó un problema en Prosody versiones anteriores a 0.11.9. La opción no documentada dialback_without_dialback en la función mod_dialback habilita una funcionalidad experimental para la autenticación de servidor a servidor. No autentica correctamente los certificados de servidor remoto, permitiendo que un servidor remoto suplante a otro servidor (cuando esta opción está habilitada)"
    }
  ],
  "lastModified": "2026-06-17T03:53:47.970",
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