{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-39561", "assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "state": "PUBLISHED", "assignerShortName": "juniper", "dateReserved": "2024-06-25T15:12:53.248Z", "datePublished": "2024-07-10T22:46:34.024Z", "dateUpdated": "2024-08-02T04:26:15.914Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "platforms": ["SRX4600", "SRX5000 Series"], "product": "Junos OS", "vendor": "Juniper Networks", "versions": [{"lessThan": "21.2R3-S8", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "21.4R3-S7", "status": "affected", "version": "21.4", "versionType": "semver"}, {"lessThan": "22.1R3-S6", "status": "affected", "version": "22.1", "versionType": "semver"}, {"lessThan": "22.2R3-S4", "status": "affected", "version": "22.2", "versionType": "semver"}, {"lessThan": "22.3R3-S3", "status": "affected", "version": "22.3", "versionType": "semver"}, {"lessThan": "22.4R3-S2", "status": "affected", "version": "22.4", "versionType": "semver"}, {"lessThan": "23.2R2", "status": "affected", "version": "23.2", "versionType": "semver"}, {"lessThan": "23.4R1-S1, 23.4R2", "status": "affected", "version": "23.4", "versionType": "semver"}]}], "configurations": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "This issue only affects systems with both no-syn-check and Express Path enabled:<br><br><tt>[set security flow tcp-session no-syn-check]<br><br>[set security forwarding-options services-offload enable]</tt><br>(This can also be enabled per security policy)<br><br><b>Note:</b>&nbsp;Automated Express Path is enabled by default starting with Junos OS 21.2R1."}], "value": "This issue only affects systems with both no-syn-check and Express Path enabled:\n\n[set security flow tcp-session no-syn-check]\n\n[set security forwarding-options services-offload enable]\n(This can also be enabled per security policy)\n\nNote:\u00a0Automated Express Path is enabled by default starting with Junos OS 21.2R1."}], "datePublic": "2024-07-10T16:00:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<br>\n<br>An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow daemon (flowd) of Juniper Networks Junos OS on \n\nSRX4600 and SRX5000 Series\n\n allows an attacker to send TCP packets with \n\nSYN/FIN or SYN/RST\n\n flags, bypassing the expected blocking of these packets.<br><br>A TCP packet with SYN/FIN or SYN/RST should be dropped in flowd. However, when no-syn-check and Express Path&nbsp;are enabled, these TCP packets are unexpectedly transferred to the downstream network.<br><br><p>This issue affects Junos OS on SRX4600 and SRX5000 Series: <br></p><ul><li>All versions before 21.2R3-S8, </li><li>from 21.4 before 21.4R3-S7, </li><li>from 22.1 before 22.1R3-S6, </li><li>from 22.2 before 22.2R3-S4, </li><li>from 22.3 before 22.3R3-S3, </li><li>from 22.4 before 22.4R3-S2, </li><li>from 23.2 before 23.2R2, </li><li>from 23.4 before 23.4R1-S1, 23.4R2.</li></ul><p></p><br><br>"}], "value": "An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow daemon (flowd) of Juniper Networks Junos OS on \n\nSRX4600 and SRX5000 Series\n\n allows an attacker to send TCP packets with \n\nSYN/FIN or SYN/RST\n\n flags, bypassing the expected blocking of these packets.\n\nA TCP packet with SYN/FIN or SYN/RST should be dropped in flowd. However, when no-syn-check and Express Path\u00a0are enabled, these TCP packets are unexpectedly transferred to the downstream network.\n\nThis issue affects Junos OS on SRX4600 and SRX5000 Series: \n\n\n * All versions before 21.2R3-S8, \n * from 21.4 before 21.4R3-S7, \n * from 22.1 before 22.1R3-S6, \n * from 22.2 before 22.2R3-S4, \n * from 22.3 before 22.3R3-S3, \n * from 22.4 before 22.4R3-S2, \n * from 23.2 before 23.2R2, \n * from 23.4 before 23.4R1-S1, 23.4R2."}], "exploits": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}], "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", 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22.4R3-S2, 23.2R2, 23.4R1-S1, 23.4R2, 24.2R1, and all subsequent releases.", "base64": false}]}], "datePublic": "2024-07-10T16:00:00.000Z", "references": [{"url": "https://supportportal.juniper.net/JSA83021", "tags": ["vendor-advisory"]}], "workarounds": [{"lang": "en", "value": "This issue can be mitigated by disabling Express Path:\n\n[set security forwarding-options services-offload disable]", "supportingMedia": [{"type": "text/html", "value": "This issue can be mitigated by disabling Express Path:<br><br><tt>[set security forwarding-options services-offload disable]</tt><br>", "base64": false}]}], "x_generator": {"engine": "Vulnogram 0.1.0-dev"}, "descriptions": [{"lang": "en", "value": "An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow daemon (flowd) of Juniper Networks Junos OS on \n\nSRX4600 and SRX5000 Series\n\n allows an attacker to send TCP packets with \n\nSYN/FIN or SYN/RST\n\n flags, bypassing the expected blocking of these packets.\n\nA TCP packet with SYN/FIN or SYN/RST should be dropped in flowd. However, when no-syn-check and Express Path\u00a0are enabled, these TCP packets are unexpectedly transferred to the downstream network.\n\nThis issue affects Junos OS on SRX4600 and SRX5000 Series: \n\n\n * All versions before 21.2R3-S8, \n * from 21.4 before 21.4R3-S7, \n * from 22.1 before 22.1R3-S6, \n * from 22.2 before 22.2R3-S4, \n * from 22.3 before 22.3R3-S3, \n * from 22.4 before 22.4R3-S2, \n * from 23.2 before 23.2R2, \n * from 23.4 before 23.4R1-S1, 23.4R2.", "supportingMedia": [{"type": "text/html", "value": "<br>\n<br>An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow daemon (flowd) of Juniper Networks Junos OS on \n\nSRX4600 and SRX5000 Series\n\n allows an attacker to send TCP packets with \n\nSYN/FIN or SYN/RST\n\n flags, bypassing the expected blocking of these packets.<br><br>A TCP packet with SYN/FIN or SYN/RST should be dropped in flowd. 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However, when no-syn-check and Express Path\u00a0are enabled, these TCP packets are unexpectedly transferred to the downstream network.\n\nThis issue affects Junos OS on SRX4600 and SRX5000 Series: \n\n\n * All versions before 21.2R3-S8, \n * from 21.4 before 21.4R3-S7, \n * from 22.1 before 22.1R3-S6, \n * from 22.2 before 22.2R3-S4, \n * from 22.3 before 22.3R3-S3, \n * from 22.4 before 22.4R3-S2, \n * from 23.2 before 23.2R2, \n * from 23.4 before 23.4R1-S1, 23.4R2."}, {"lang": "es", "value": "Una vulnerabilidad de verificaci\u00f3n inadecuada de condiciones inusuales o excepcionales en el demonio de flujo (flowd) de Juniper Networks Junos OS en las series SRX4600 y SRX5000 permite a un atacante enviar paquetes TCP con indicadores SYN/FIN o SYN/RST, evitando el bloqueo esperado de estos paquetes. . Un paquete TCP con SYN/FIN o SYN/RST debe descartarse en flowd. Sin embargo, cuando no-syn-check y Express Path est\u00e1n habilitados, estos paquetes TCP se transfieren inesperadamente a la red descendente. Este problema afecta a Junos OS en las series SRX4600 y SRX5000: * Todas las versiones anteriores a 21.2R3-S8, * desde 21.4 antes de 21.4R3-S7, * desde 22.1 antes de 22.1R3-S6, * desde 22.2 antes de 22.2R3-S4, * desde 22.3 antes de 22.3R3-S3, * desde 22.4 antes de 22.4R3-S2, * desde 23.2 antes de 23.2R2, * desde 23.4 antes de 23.4R1-S1, 23.4R2."}], "id": "CVE-2024-39561", "lastModified": "2025-04-10T20:40:55.503", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "sirt@juniper.net", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "LOW", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "sirt@juniper.net", "type": "Primary"}]}, "published": "2024-07-10T23:15:13.383", "references": [{"source": "sirt@juniper.net", "tags": ["Vendor Advisory"], "url": "https://supportportal.juniper.net/JSA83021"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://supportportal.juniper.net/JSA83021"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-754"}], "source": "sirt@juniper.net", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-754"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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