CVE-2007-4103

Estado: ModificadaAlta (7.5)—

The IAX2 channel driver (chan_iax2) in Asterisk Open 1.2.x before 1.2.23, 1.4.x before 1.4.9, and Asterisk Appliance Developer Kit before 0.6.0, when configured to allow unauthenticated calls, allows remote attackers to cause a denial of service (resource exhaustion) via a flood of calls that do not complete a 3-way handshake, which causes an ast_channel to be allocated but not released.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Puntuación base: 7.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 5.94%
Percentil entre todas las CVEs puntuadas: 93
Fecha de la puntuación: 5/10/2026

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)

Digium — Asterisk Digium — Asterisk Appliance Developer KIT

CWE

CWE-772

Referencias

JSON original (NVD)

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  "id": "CVE-2007-4103",
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      "value": "The IAX2 channel driver (chan_iax2) in Asterisk Open 1.2.x before 1.2.23, 1.4.x before 1.4.9, and Asterisk Appliance Developer Kit before 0.6.0, when configured to allow unauthenticated calls, allows remote attackers to cause a denial of service (resource exhaustion) via a flood of calls that do not complete a 3-way handshake, which causes an ast_channel to be allocated but not released."
    },
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      "lang": "es",
      "value": "El controlador de canal IAX2 (chan_iax2) de Asterisk Open 1.2.x anterior a 1.2.23, 1.4.x anterior a 1.4.9, y Asterisk Appliance Developer Kit anterior a 0.6.0, cuando está configurado para permitir llamadas no autenticadas, permite a atacantes remotos provocar una denegación de servicio (agotamiento de recursos) mediante una inundación de llamadas que no completan la negociación de 3 pasos, lo cual provoca que se reserve un canal ast_channel pero no se libere."
    }
  ],
  "lastModified": "2026-06-16T22:43:24.393",
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