CVE-2024-21617

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A manual reboot of the system will restore the services.</p>Note: NSR is not supported on the SRX Series and is therefore not affected by this vulnerability.<br><p>The memory usage can be monitored using the below commands.</p><code>user@host&gt; show chassis routing-engine no-forwarding</code><br><code>user@host&gt; show system memory | no-more</code><br><p>This issue affects:</p><p>Juniper Networks Junos OS</p><p></p><ul><li>21.2 versions earlier than 21.2R3-S5;</li><li>21.3 versions earlier than 21.3R3-S4;</li><li>21.4 versions earlier than 21.4R3-S4;</li><li>22.1 versions earlier than 22.1R3-S2;</li><li>22.2 versions earlier than 22.2R3-S2;</li><li>22.3 versions earlier than 22.3R2-S1, 22.3R3;</li><li>22.4 versions earlier than 22.4R1-S2, 22.4R2.</li></ul><p></p><p>This issue does not affect Junos OS versions earlier than 20.4R3-S7.</p>\n\n"}], "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. 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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", "supportingMedia": [{"type": "text/html", "value": "\n\n<p>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).</p><p>On all Junos OS platforms, when NSR is enabled, a BGP flap will cause memory leak. 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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"}, {"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 p\u00e9rdida de memoria que provoque una denegaci\u00f3n de servicio (DoS). En todas las plataformas Junos OS, cuando NSR est\u00e1 habilitado, un fallo de BGP provocar\u00e1 una p\u00e9rdida de memoria. Un reinicio manual del sistema restaurar\u00e1 los servicios. El uso de la memoria se puede monitorear usando los siguientes comandos. user@host&gt; show chassis routing-engine no-forwarding user@host&gt; 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."}], "id": "CVE-2024-21617", "lastModified": "2026-06-17T07:09:51.113", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "sirt@juniper.net", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-21617", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-01-12T18:12:19.572164Z", "version": "2.0.3"}}]}, "published": "2024-01-12T01:15:50.230", "references": [{"source": "sirt@juniper.net", "tags": ["Vendor Advisory"], "url": "https://supportportal.juniper.net/JSA75758"}, {"source": "sirt@juniper.net", "tags": ["Third Party Advisory"], "url": "https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://supportportal.juniper.net/JSA75758"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-459"}], "source": "sirt@juniper.net", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-459"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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