CVE-2024-21595

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A manual restart will be required to recover the device.</p><p>This issue only affects EX4100, EX4400, EX4600, QFX5000 Series devices.</p><p>This issue affects:</p><p>Juniper Networks Junos OS</p><p></p><ul><li>21.4R3 versions earlier than 21.4R3-S4;</li><li>22.1R3 versions earlier than 22.1R3-S3;</li><li>22.2R2 versions earlier than 22.2R3-S1;</li><li>22.3 versions earlier than 22.3R2-S2, 22.3R3;</li><li>22.4 versions earlier than 22.4R2;</li><li>23.1 versions earlier than 23.1R2.</li></ul><p></p>\n\n"}], "value": "\nAn Improper Validation of Syntactic Correctness of Input vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS).\n\nIf an attacker sends high rate of specific ICMP traffic to a device with VXLAN configured, this causes a deadlock of the PFE and results in the device becoming unresponsive. A manual restart will be required to recover the device.\n\nThis issue only affects EX4100, EX4400, EX4600, QFX5000 Series devices.\n\nThis issue affects:\n\nJuniper Networks Junos OS\n\n\n\n * 21.4R3 versions earlier than 21.4R3-S4;\n * 22.1R3 versions earlier than 22.1R3-S3;\n * 22.2R2 versions earlier than 22.2R3-S1;\n * 22.3 versions earlier than 22.3R2-S2, 22.3R3;\n * 22.4 versions earlier than 22.4R2;\n * 23.1 versions earlier than 23.1R2.\n\n\n\n\n\n\n"}], "exploits": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Juniper SIRT is not aware of any malicious exploitation of this vulnerability.</p>"}], "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability.\n\n"}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-1286", "description": "CWE-1286 Improper Validation of Syntactic Correctness of Input", "lang": "en", "type": "CWE"}]}, {"descriptions": [{"description": "Denial of Service (DoS)", "lang": "en"}]}], "providerMetadata": {"orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "shortName": "juniper", "dateUpdated": "2024-01-12T00:52:35.433Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://advisory.juniper.net/JSA75734"}, {"tags": ["technical-description"], "url": "https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}], "solutions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>The following software releases have been updated to resolve this specific issue: Junos OS 21.4R3-S4, 22.1R3-S3, 22.2R3-S1, 22.3R2-S2, 22.3R3, 22.4R2, 23.1R2, 23.2R1, and all subsequent releases.</p>"}], "value": "The following software releases have been updated to resolve this specific issue: Junos OS 21.4R3-S4, 22.1R3-S3, 22.2R3-S1, 22.3R2-S2, 22.3R3, 22.4R2, 23.1R2, 23.2R1, and all subsequent releases.\n\n"}], "source": {"advisory": "JSA75734", "defect": ["1719542"], "discovery": "USER"}, "timeline": [{"lang": "en", "time": "2024-01-10T17:00:00.000Z", "value": "Initial Publication"}], "title": "Junos OS: EX4100, EX4400, EX4600, QFX5000 Series: A high rate of specific ICMP traffic will cause the PFE to hang", "workarounds": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>There are no known workarounds for this issue.</p>"}], "value": "There are no known workarounds for this issue.\n\n"}], "x_generator": {"engine": "Vulnogram 0.1.0-av217"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-01T22:27:34.822Z"}, "title": "CVE Program Container", "references": [{"tags": ["vendor-advisory", "x_transferred"], "url": "https://advisory.juniper.net/JSA75734"}, {"tags": ["technical-description", "x_transferred"], "url": "https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}, {"affected": [{"vendor": "juniper", "product": "junos", "cpes": ["cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "versions": [{"version": "21.4R3", "status": "affected", "lessThan": "21.4R3-S4", "versionType": "semver"}, {"version": "22.1R3", "status": "affected", "lessThan": "22.1R3-S3", "versionType": "semver"}, {"version": "22.2R2", "status": "affected", "lessThan": "22.2R3-S1", "versionType": "semver"}, {"version": "22.3", "status": "affected", "lessThan": "22.3R2-S2", "versionType": "semver"}, {"version": "22.3", "status": "affected", "lessThan": "22.3R3", "versionType": "semver"}, {"version": "22.4", "status": "affected", "lessThan": "22.4R2", "versionType": "semver"}, {"version": "23.1", "status": "affected", "lessThan": "23.1R2", "versionType": "semver"}]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-03-25T18:46:03.901666Z", "id": "CVE-2024-21595", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-03T18:13:05.922Z"}}]}}

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causes a deadlock of the PFE and results in the device becoming unresponsive. A manual restart will be required to recover the device.\n\nThis issue only affects EX4100, EX4400, EX4600, QFX5000 Series devices.\n\nThis issue affects:\n\nJuniper Networks Junos OS\n\n\n\n * 21.4R3 versions earlier than 21.4R3-S4;\n * 22.1R3 versions earlier than 22.1R3-S3;\n * 22.2R2 versions earlier than 22.2R3-S1;\n * 22.3 versions earlier than 22.3R2-S2, 22.3R3;\n * 22.4 versions earlier than 22.4R2;\n * 23.1 versions earlier than 23.1R2.\n\n\n\n\n\n\n", "supportingMedia": [{"type": "text/html", "value": "\n\n<p>An Improper Validation of Syntactic Correctness of Input vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS).</p><p>If an attacker sends high rate of specific ICMP traffic to a device with VXLAN configured, this causes a deadlock of the PFE and results in the device becoming unresponsive. 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A manual restart will be required to recover the device.\n\nThis issue only affects EX4100, EX4400, EX4600, QFX5000 Series devices.\n\nThis issue affects:\n\nJuniper Networks Junos OS\n\n\n\n * 21.4R3 versions earlier than 21.4R3-S4;\n * 22.1R3 versions earlier than 22.1R3-S3;\n * 22.2R2 versions earlier than 22.2R3-S1;\n * 22.3 versions earlier than 22.3R2-S2, 22.3R3;\n * 22.4 versions earlier than 22.4R2;\n * 23.1 versions earlier than 23.1R2.\n\n\n\n\n\n\n"}, {"lang": "es", "value": "Una vulnerabilidad de validaci\u00f3n inadecuada de la correcci\u00f3n sint\u00e1ctica de la entrada en el Packet Forwarding Engine (PFE) de Juniper Networks Junos OS permite que un atacante no autenticado basado en la red provoque una denegaci\u00f3n de servicio (DoS). Si un atacante env\u00eda una alta tasa de tr\u00e1fico ICMP espec\u00edfico a un dispositivo con VXLAN configurado, esto provoca un bloqueo del PFE y hace que el dispositivo deje de responder. Ser\u00e1 necesario reiniciar manualmente para recuperar el dispositivo. Este problema solo afecta a los dispositivos de las series EX4100, EX4400, EX4600 y QFX5000. Este problema afecta a: Juniper Networks Junos OS * versiones 21.4R3 anteriores a 21.4R3-S4; * Versiones 22.1R3 anteriores a 22.1R3-S3; * Versiones 22.2R2 anteriores a 22.2R3-S1; * Versiones 22.3 anteriores a 22.3R2-S2, 22.3R3; * Versiones 22.4 anteriores a 22.4R2; * Versiones 23.1 anteriores a 23.1R2."}], "id": "CVE-2024-21595", "lastModified": "2026-06-17T07:09:47.290", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "sirt@juniper.net", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-21595", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-03-25T18:46:03.901666Z", "version": "2.0.3"}}]}, "published": "2024-01-12T01:15:47.063", "references": [{"source": "sirt@juniper.net", "tags": ["Vendor Advisory"], "url": "https://advisory.juniper.net/JSA75734"}, {"source": "sirt@juniper.net", "tags": ["Third Party Advisory"], "url": "https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/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://advisory.juniper.net/JSA75734"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/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-1286"}], "source": "sirt@juniper.net", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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