CVE-2018-0006

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The issue was caused by attempting to process an unbounded number of pending VLAN authentication requests, leading to excessive memory allocation. This issue only affects devices configured for DHCPv4/v6 over AE auto-sensed VLANs, utilized in Broadband Edge (BBE) deployments. Other configurations are unaffected by this issue. Affected releases are Juniper Networks Junos OS: 15.1 versions prior to 15.1R6-S2, 15.1R7; 16.1 versions prior to 16.1R5-S1, 16.1R6; 16.2 versions prior to 16.2R2-S2, 16.2R3; 17.1 versions prior to 17.1R2-S5, 17.1R3; 17.2 versions prior to 17.2R2."}], "exploits": [{"lang": "en", "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}], "metrics": [{"cvssV3_0": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0"}}], "problemTypes": [{"descriptions": [{"description": "Denial of service", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2018-01-19T10:57:01.000Z", "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "shortName": "juniper"}, "references": [{"name": "1040184", "tags": ["vdb-entry", "x_refsource_SECTRACK"], "url": "http://www.securitytracker.com/id/1040184"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://kb.juniper.net/JSA10834"}], "solutions": [{"lang": "en", "value": "The following software releases have been updated to resolve this specific issue: 15.1R6-S2, 15.1R7, 16.1R5-S1, 16.1R6, 16.2R2-S2, 16.2R3, 17.1R2-S5*, 17.1R3*, 17.2R2, 17.3R1, 17.4R1, and all subsequent releases. \n\n*pending release"}], "source": {"advisory": "JSA10834", "defect": ["1284213", "1268129"], "discovery": "USER"}, "title": "Junos OS: bbe-smgd process denial of service while processing VLAN authentication requests/rejects", "workarounds": [{"lang": "en", "value": "Since this issue is specific to auto-sense or dynamic VLANs, utilizing a static VLAN model will mitigate this issue."}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "sirt@juniper.net", "DATE_PUBLIC": "2018-01-10T17:00:00.000Z", "ID": "CVE-2018-0006", "STATE": "PUBLIC", "TITLE": "Junos OS: bbe-smgd process denial of service while processing VLAN authentication requests/rejects"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Junos OS", "version": {"version_data": [{"affected": "<", "version_affected": "<", "version_name": "15.1", "version_value": "15.1R6-S2, 15.1R7"}, {"affected": "<", "version_affected": "<", "version_name": "16.1", "version_value": "16.1R5-S1, 16.1R6"}, {"affected": "<", "version_affected": "<", "version_name": "16.2", "version_value": "16.2R2-S2, 16.2R3"}, {"affected": "<", "version_affected": "<", "version_name": "17.1", "version_value": "17.1R2-S5, 17.1R3"}, {"affected": "<", "version_affected": "<", "version_name": "17.2", "version_value": "17.2R2"}]}}]}, "vendor_name": "Juniper Networks"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A high rate of VLAN authentication attempts sent from an adjacent host on the local broadcast domain can trigger high memory utilization by the BBE subscriber management daemon (bbe-smgd), and lead to a denial of service condition. 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The issue was caused by attempting to process an unbounded number of pending VLAN authentication requests, leading to excessive memory allocation. This issue only affects devices configured for DHCPv4/v6 over AE auto-sensed VLANs, utilized in Broadband Edge (BBE) deployments. Other configurations are unaffected by this issue. Affected releases are Juniper Networks Junos OS: 15.1 versions prior to 15.1R6-S2, 15.1R7; 16.1 versions prior to 16.1R5-S1, 16.1R6; 16.2 versions prior to 16.2R2-S2, 16.2R3; 17.1 versions prior to 17.1R2-S5, 17.1R3; 17.2 versions prior to 17.2R2."}, {"lang": "es", "value": "Una alta tasa de intentos de autenticaci\u00f3n VLAN enviados desde un host adyacente en el dominio de difusi\u00f3n local podr\u00eda provocar que bbe-smgd (BBE subscriber management daemon) utilice una gran cantidad de memoria y provoque una denegaci\u00f3n de servicio (DoS). El problema se produjo al intentar procesar un n\u00famero ilimitado de peticiones de autenticaci\u00f3n VLAN pendientes, provocando una asignaci\u00f3n excesiva de memoria. Este problema solo afecta a dispositivos configurados para DHCPv4/v6 en VLAN AE con sensores autom\u00e1ticos, utilizados en despliegues BBE (Broadband Edge). Otras configuraciones no se ven afectadas por este problema. Las distribuciones afectadas son Juniper Networks Junos OS: 15.1 en versiones anteriores a 15.1R6-S2, 15.1R7; 16.1 en versiones anteriores a 16.1R5-S1, 16.1R6; 16.2 en versiones anteriores a 16.2R2-S2, 16.2R3; 17.1 en versiones anteriores a 17.1R2-S5, 17.1R3; 17.2 en versiones anteriores a 17.2R2."}], "id": "CVE-2018-0006", "lastModified": "2026-06-17T01:29:22.173", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 2.9, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:A/AC:M/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 5.5, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"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:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "sirt@juniper.net", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 1.6, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2018-01-10T22:29:01.133", "references": [{"source": "sirt@juniper.net", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securitytracker.com/id/1040184"}, {"source": "sirt@juniper.net", "tags": ["Mitigation", "Patch", "Vendor Advisory"], "url": "https://kb.juniper.net/JSA10834"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securitytracker.com/id/1040184"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mitigation", "Patch", "Vendor Advisory"], "url": "https://kb.juniper.net/JSA10834"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-770"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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