CVE-2025-21596

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However, repeated execution of this command will eventually cause the chassisd process to fail to restart, impacting packet processing on the system.\n\nThis issue affects Junos OS on SRX1500, SRX4100, SRX4200:\u00a0\n\n\n\n * All versions before 21.4R3-S9,\u00a0\n * from 22.2 before 22.2R3-S5,\u00a0\n * from 22.3 before 22.3R3-S4,\u00a0\n * from 22.4 before 22.4R3-S4,\u00a0\n * from 23.2 before 23.2R2-S3,\u00a0\n * from 23.4 before 23.4R2-S1."}, {"lang": "es", "value": "Una vulnerabilidad de gesti\u00f3n inadecuada de condiciones excepcionales en command-line processing de Juniper Networks Junos OS en dispositivos SRX1500, SRX4100 y SRX4200 permite que un atacante local autenticado con poco nivel de privilegios ejecute el comando 'show housing environment pem' para provocar que el daemon del chasis (chassisd) se bloquee y se reinicie, lo que da como resultado una denegaci\u00f3n de servicio (DoS) temporal. Sin embargo, la ejecuci\u00f3n repetida de este comando provocar\u00e1 que el proceso de chasisd no se reinicie, lo que afectar\u00e1 el procesamiento de paquetes en el sistema. Este problema afecta a Junos OS en SRX1500, SRX4100, SRX4200: * Todas las versiones anteriores a 21.4R3-S9, * desde 22.2 hasta 22.2R3-S5, * desde 22.3 hasta 22.3R3-S4, * desde 22.4 hasta 22.4R3-S4, * desde 23.2 hasta 23.2R2-S3, * desde 23.4 hasta 23.4R2-S1."}], "id": "CVE-2025-21596", "lastModified": "2026-06-17T08:43:48.883", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "sirt@juniper.net", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NO", "Recovery": "USER", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.8, "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": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/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:N/R:U/V:X/RE:M/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "MODERATE"}, "source": "sirt@juniper.net", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-21596", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-01-09T19:10:04.826150Z", "version": "2.0.3"}}]}, "published": "2025-01-09T17:15:18.593", "references": [{"source": "sirt@juniper.net", "tags": ["Vendor Advisory"], "url": "https://supportportal.juniper.net/JSA92864"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-755"}], "source": "sirt@juniper.net", "type": "Secondary"}]}

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