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CVE-2023-22408

Estado: ModificadaAlta (7.5)—

An Improper Validation of Array Index vulnerability in the SIP ALG of Juniper Networks Junos OS on SRX 5000 Series allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS). When an attacker sends an SIP packets with a malformed SDP field then the SIP ALG can not process it which will lead to an FPC crash and restart. Continued receipt of these specific packets will lead to a sustained Denial of Service. This issue can only occur when both below mentioned conditions are fulfilled: 1. Call distribution needs to be enabled: [security alg sip enable-call-distribution] 2.

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The SIP ALG needs to be enabled, either implicitly / by default or by way of configuration. To confirm whether SIP ALG is enabled on SRX, and MX with SPC3 use the following command: user@host> show security alg status | match sip SIP : Enabled This issue affects Juniper Networks Junos OS on SRX 5000 Series: 20.4 versions prior to 20.4R3-S5; 21.1 versions prior to 21.1R3-S4; 21.2 versions prior to 21.2R3-S3; 21.3 versions prior to 21.3R3-S3; 21.4 versions prior to 21.4R3-S2; 22.1 versions prior to 22.1R2-S2, 22.1R3; 22.2 versions prior to 22.2R3; 22.3 versions prior to 22.3R1-S1, 22.3R2. This issue does not affect Juniper Networks Junos OS versions prior to 20.4R1.

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 (1)

Juniper — Junos

CWE

Referencias

JSON original (NVD)

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      "value": "An Improper Validation of Array Index vulnerability in the SIP ALG of Juniper Networks Junos OS on SRX 5000 Series allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS). When an attacker sends an SIP packets with a malformed SDP field then the SIP ALG can not process it which will lead to an FPC crash and restart. Continued receipt of these specific packets will lead to a sustained Denial of Service. This issue can only occur when both below mentioned conditions are fulfilled: 1. Call distribution needs to be enabled: [security alg sip enable-call-distribution] 2. The SIP ALG needs to be enabled, either implicitly / by default or by way of configuration. To confirm whether SIP ALG is enabled on SRX, and MX with SPC3 use the following command: user@host> show security alg status | match sip SIP : Enabled This issue affects Juniper Networks Junos OS on SRX 5000 Series: 20.4 versions prior to 20.4R3-S5; 21.1 versions prior to 21.1R3-S4; 21.2 versions prior to 21.2R3-S3; 21.3 versions prior to 21.3R3-S3; 21.4 versions prior to 21.4R3-S2; 22.1 versions prior to 22.1R2-S2, 22.1R3; 22.2 versions prior to 22.2R3; 22.3 versions prior to 22.3R1-S1, 22.3R2. This issue does not affect Juniper Networks Junos OS versions prior to 20.4R1."
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      "value": "Una vulnerabilidad de Improper Validation of Array Index en SIP ALG de Juniper Networks Junos OS en la serie SRX 5000 permite que un atacante no autenticado provoque una denegación de servicio (DoS). Cuando un atacante envía paquetes SIP con un campo SDP con formato incorrecto, SIP ALG no puede procesarlo, lo que provocará un bloqueo y reinicio del FPC. La recepción continua de estos paquetes específicos dará lugar a una Denegación de Servicio sostenida. Este problema solo puede ocurrir cuando se cumplen las dos condiciones mencionadas a continuación: 1. La distribución de llamadas debe estar habilitada: [alg de seguridad sip enable-call-distribution] 2. El SIP ALG debe estar habilitado, ya sea implícitamente/por defecto o de forma de configuración. Para confirmar si SIP ALG está habilitado en SRX y MX con SPC3, use el siguiente comando: usuario@host> show security alg status | match sip SIP : Enabled. Este problema afecta a Juniper Networks Junos OS en la serie SRX 5000: versiones 20.4 anteriores a 20.4R3-S5; Versiones 21.1 anteriores a 21.1R3-S4; Versiones 21.2 anteriores a 21.2R3-S3; Versiones 21.3 anteriores a 21.3R3-S3; Versiones 21.4 anteriores a 21.4R3-S2; Versiones 22.1 anteriores a 22.1R2-S2, 22.1R3; Versiones 22.2 anteriores a 22.2R3; Versiones 22.3 anteriores a 22.3R1-S1, 22.3R2. Este problema no afecta a las versiones de Juniper Networks Junos OS anteriores a la 20.4R1."
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}