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CVE-2024-21617

Estado: ModificadaMedia (6.5)—

An Incomplete Cleanup vulnerability in Nonstop active routing (NSR) component of Juniper Networks Junos OS allows an adjacent, unauthenticated attacker to cause memory leak leading to Denial of Service (DoS).

On all Junos OS platforms, when NSR is enabled, a BGP flap will cause memory leak. A manual reboot of the system will restore the services.

Note: NSR is not supported on the SRX Series and is therefore not affected by this vulnerability. The memory usage can be monitored using the below commands.

user@host> show chassis routing-engine no-forwarding user@host> show system memory | no-more This issue affects:

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Juniper Networks Junos OS

This issue does not affect Junos OS versions earlier than 20.4R3-S7.

Detalles técnicos trazas, registros y código del informe original
  *  21.2 versions earlier than 21.2R3-S5;
  *  21.3 versions earlier than 21.3R3-S4;
  *  21.4 versions earlier than 21.4R3-S4;
  *  22.1 versions earlier than 22.1R3-S2;
  *  22.2 versions earlier than 22.2R3-S2;
  *  22.3 versions earlier than 22.3R2-S1, 22.3R3;
  *  22.4 versions earlier than 22.4R1-S2, 22.4R2.

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": "\nAn Incomplete Cleanup vulnerability in Nonstop active routing (NSR) component of Juniper Networks Junos OS allows an adjacent, unauthenticated attacker to cause memory leak leading to Denial of Service (DoS).\n\nOn all Junos OS platforms, when NSR is enabled, a BGP flap will cause memory leak. A manual reboot of the system will restore the services.\n\nNote: NSR is not supported on the SRX Series and is therefore not affected by this vulnerability.\nThe memory usage can be monitored using the below commands.\n\nuser@host> show chassis routing-engine no-forwarding\nuser@host> show system memory | no-more\nThis issue affects:\n\nJuniper Networks Junos OS\n\n\n\n  *  21.2 versions earlier than 21.2R3-S5;\n  *  21.3 versions earlier than 21.3R3-S4;\n  *  21.4 versions earlier than 21.4R3-S4;\n  *  22.1 versions earlier than 22.1R3-S2;\n  *  22.2 versions earlier than 22.2R3-S2;\n  *  22.3 versions earlier than 22.3R2-S1, 22.3R3;\n  *  22.4 versions earlier than 22.4R1-S2, 22.4R2.\n\n\n\n\nThis issue does not affect Junos OS versions earlier than 20.4R3-S7.\n\n\n\n"
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      "lang": "es",
      "value": "Una vulnerabilidad de limpieza incompleta en el componente Nonstop active routing (NSR) de Juniper Networks Junos OS permite que un atacante adyacente no autenticado cause una pérdida de memoria que provoque una denegación de servicio (DoS). En todas las plataformas Junos OS, cuando NSR está habilitado, un fallo de BGP provocará una pérdida de memoria. Un reinicio manual del sistema restaurará los servicios. El uso de la memoria se puede monitorear usando los siguientes comandos. user@host> show chassis routing-engine no-forwarding user@host> show system memory | no-more. Este problema afecta a: Juniper Networks Junos OS * versiones 21.2 anteriores a 21.2R3-S5; * Versiones 21.3 anteriores a 21.3R3-S4; * Versiones 21.4 anteriores a 21.4R3-S4; * Versiones 22.1 anteriores a 22.1R3-S2; * Versiones 22.2 anteriores a 22.2R3-S2; * Versiones 22.3 anteriores a 22.3R2-S1, 22.3R3; * Versiones 22.4 anteriores a 22.4R1-S2, 22.4R2. Este problema no afecta a las versiones de Junos OS anteriores a la 20.4R3-S7."
    }
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  "lastModified": "2026-06-17T07:09:51.113",
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