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When a BGP flow route with redirect IP extended community is received, and the reachability to the next-hop of the corresponding redirect IP is flapping, the rpd process might crash. Whether the crash occurs depends on the timing of the internally processing of these two events and is outside the attackers control. Please note that this issue also affects Route-Reflectors unless 'routing-options flow firewall-install-disable' is configured. This issue affects: Juniper Networks Junos OS: 18.4 versions prior to 18.4R2-S10, 18.4R3-S10; 19.1 versions prior to 19.1R3-S7; 19.2 versions prior to 19.2R1-S8, 19.2R3-S4; 19.4 versions prior to 19.4R3-S8; 20.2 versions prior to 20.2R3-S3; 20.3 versions prior to 20.3R3-S2; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2. Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-EVO; 21.1-EVO versions prior to 21.1R2-EVO. This issue does not affect Juniper Networks Junos OS versions prior to 18.4R1."}], "affected": [{"vendor": "Juniper Networks", "product": "Junos OS", "versions": [{"version": "unspecified", "lessThan": "18.4R1", "status": "unaffected", "versionType": "custom"}, {"version": "18.4", "status": "affected", "lessThan": "18.4R2-S10, 18.4R3-S10", "versionType": "custom"}, {"version": "19.1", "status": "affected", "lessThan": "19.1R3-S7", "versionType": "custom"}, {"version": "19.2", "status": "affected", "lessThan": "19.2R1-S8, 19.2R3-S4", "versionType": "custom"}, {"version": "19.4", "status": "affected", "lessThan": "19.4R3-S8", "versionType": "custom"}, {"version": "20.2", "status": "affected", "lessThan": "20.2R3-S3", "versionType": "custom"}, {"version": "20.3", "status": "affected", "lessThan": "20.3R3-S2", "versionType": "custom"}, {"version": "20.4", "status": "affected", "lessThan": "20.4R3", "versionType": "custom"}, {"version": "21.1", "status": "affected", "lessThan": "21.1R2", "versionType": "custom"}]}, {"vendor": "Juniper Networks", "product": "Junos OS Evolved", "versions": [{"version": "unspecified", "lessThan": "20.4R2-EVO", "status": "affected", "versionType": "custom"}, {"version": "21.1-EVO", "status": "affected", "lessThan": "21.1R2-EVO", "versionType": "custom"}]}], "references": [{"url": "https://kb.juniper.net/JSA69902"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM"}}], "problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "description": "CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition", "cweId": "CWE-367"}]}, {"descriptions": [{"type": "text", "lang": "en", "description": "Denial of Service (DoS)"}]}], "x_generator": {"engine": "Vulnogram 0.0.9"}, "source": {"advisory": "JSA69902", "defect": ["1583490"], "discovery": "USER"}, "configurations": [{"lang": "en", "value": "To be vulnerable to this issue a device needs to be configured with a minimal BGP flow spec configuration like in the following example:\n\n [protocols bgp group <group-name> family <family> flow]"}], "workarounds": [{"lang": "en", "value": "There are no viable workarounds for this issue."}], "exploits": [{"lang": "en", "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}], "solutions": [{"lang": "en", "value": "The following software releases have been updated to resolve this specific issue: \nJunos OS: 18.4R2-S10, 18.4R3-S10, 19.1R3-S7, 19.2R1-S8, 19.2R3-S4, 19.4R3-S8, 20.2R3-S3, 20.3R3-S2, 20.4R3, 21.1R2, 21.2R1, and all subsequent releases.\nJunos OS Evolved: 20.4R2-EVO, 21.1R2-EVO, 21.2R1-EVO, and all subsequent releases."}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T03:07:49.687Z"}, "title": "CVE Program Container", "references": [{"url": "https://kb.juniper.net/JSA69902", "tags": ["x_transferred"]}]}]}}

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When a BGP flow route with redirect IP extended community is received, and the reachability to the next-hop of the corresponding redirect IP is flapping, the rpd process might crash. Whether the crash occurs depends on the timing of the internally processing of these two events and is outside the attackers control. Please note that this issue also affects Route-Reflectors unless 'routing-options flow firewall-install-disable' is configured. This issue affects: Juniper Networks Junos OS: 18.4 versions prior to 18.4R2-S10, 18.4R3-S10; 19.1 versions prior to 19.1R3-S7; 19.2 versions prior to 19.2R1-S8, 19.2R3-S4; 19.4 versions prior to 19.4R3-S8; 20.2 versions prior to 20.2R3-S3; 20.3 versions prior to 20.3R3-S2; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2. Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-EVO; 21.1-EVO versions prior to 21.1R2-EVO. This issue does not affect Juniper Networks Junos OS versions prior to 18.4R1."}, {"lang": "es", "value": "Una vulnerabilidad de Condici\u00f3n de Carrera de Tiempo de Comprobaci\u00f3n Tiempo de Uso (TOCTOU) en el demonio de protocolo de enrutamiento (rpd) de Juniper Networks Junos OS, Junos OS Evolved permite a un atacante no autenticado basado en la red causar una Denegaci\u00f3n de Servicio (DoS). Cuando es recibida una ruta de flujo BGP con comunidad extendida de IP de redirecci\u00f3n, y la accesibilidad al siguiente salto de la IP de redireccionamiento correspondiente es inestable, el proceso rpd podr\u00eda bloquearse. El hecho de que sea producido el fallo depende del momento en que son procesados internamente estos dos eventos y est\u00e1 fuera del control de atacantes. Tenga en cuenta que este problema tambi\u00e9n afecta a los Route-Reflectors a menos que sea configurado \"routing-options flow firewall-install-disable\". Este problema afecta a: Juniper Networks Junos OS: 18.4 versiones anteriores a 18.4R2-S10, 18.4R3-S10; 19.1 versiones anteriores a 19.1R3-S7; 19.2 versiones anteriores a 19.2R1-S8, 19.2R3-S4; 19.4 versiones anteriores a 19.4R3-S8; 20.2 versiones anteriores a 20.2R3-S3; 20.3 versiones anteriores a 20.3R3-S2; 20.4 versiones anteriores a 20.4R3; 21.1 versiones anteriores a 21.1R2. Juniper Networks Junos OS Evolved: Todas las versiones anteriores a 20.4R2-EVO; versiones 21.1-EVO anteriores a 21.1R2-EVO. Este problema no afecta a Juniper Networks Junos OS versiones anteriores a 18.4R1"}], "id": "CVE-2022-22220", "lastModified": "2022-10-20T20:21:56.437", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "sirt@juniper.net", "type": "Secondary"}]}, "published": "2022-10-18T03:15:09.650", "references": [{"source": "sirt@juniper.net", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA69902"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-367"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-367"}], "source": "sirt@juniper.net", "type": "Secondary"}]}

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