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Affected releases are Juniper Networks Junos OS: 14.1 versions prior to 14.1R10, 14.1R9; 14.1X53 versions prior to 14.1X53-D47; 15.1 versions prior to 15.1R4-S9, 15.1R6-S6, 15.1R7; 15.1X49 versions prior to 15.1X49-D100; 15.1X53 versions prior to 15.1X53-D59; 16.1 versions prior to 16.1R3-S8, 16.1R4-S8, 16.1R5; 16.2 versions prior to 16.2R1-S6, 16.2R2; 17.1 versions prior to 17.1R2."}], "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": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.0"}}], "problemTypes": [{"descriptions": [{"description": "weak encryption\nman-in-the-middle attack\nbrute force attack\ndictionary attack", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2018-05-05T09:57:01", "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "shortName": "juniper"}, "references": [{"name": "1040789", "tags": ["vdb-entry", "x_refsource_SECTRACK"], "url": "http://www.securitytracker.com/id/1040789"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://kb.juniper.net/JSA10854"}], "solutions": [{"lang": "en", "value": "The following software releases have been updated to resolve this specific issue: 14.1R9, 14.1X53-D47, 15.1R4-S9, 15.1R6-S6, 15.1R7, 15.1X49-D100, 15.1X53-D59, 16.1R3-S8, 16.1R4-S8, 16.1R5, 16.2R1-S6, 16.2R2, 17.1R2, 17.2R1 and all subsequent releases."}], "source": {"advisory": "JSA10854", "defect": ["1251909"], "discovery": "INTERNAL", "found_during": "INTERNAL"}, "title": "Junos OS: Short MacSec keys may allow man-in-the-middle attacks.", "workarounds": [{"lang": "en", "value": "Configure all 64 digits of a CKN.\nConfigure all 32 digits of a CAK.\n\nSee the junos task topic macsec for further information."}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "sirt@juniper.net", "DATE_PUBLIC": "2018-04-11T16:00:00.000Z", "ID": "CVE-2018-0021", "STATE": "PUBLIC", "TITLE": "Junos OS: Short MacSec keys may allow man-in-the-middle attacks."}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Junos OS", "version": {"version_data": [{"affected": "<", "version_affected": "<", "version_name": "14.1", "version_value": "14.1R10, 14.1R9"}, {"affected": "<", "version_affected": "<", "version_name": "14.1X53", "version_value": "14.1X53-D47"}, {"affected": "<", "version_affected": "<", "version_name": "15.1", "version_value": "15.1R4-S9, 15.1R6-S6, 15.1R7"}, {"affected": "<", "version_affected": "<", "version_name": "15.1X49", "version_value": "15.1X49-D100"}, {"affected": "<", "version_affected": "<", "version_name": "15.1X53", "version_value": "15.1X53-D59"}, {"affected": "<", "version_affected": "<", "version_name": "16.1", "version_value": "16.1R3-S8, 16.1R4-S8, 16.1R5"}, {"affected": "<", "version_affected": "<", "version_name": "16.2", "version_value": "16.2R1-S6, 16.2R2"}, {"affected": "<", "version_affected": "<", "version_name": "17.1", "version_value": "17.1R2"}]}}]}, "vendor_name": "Juniper Networks"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "If all 64 digits of the connectivity association name (CKN) key or all 32 digits of the connectivity association key (CAK) key are not configured, all remaining digits will be auto-configured to 0. Hence, Juniper devices configured with short MacSec keys are at risk to an increased likelihood that an attacker will discover the secret passphrases configured for these keys through dictionary-based and brute-force-based attacks using spoofed packets. Affected releases are Juniper Networks Junos OS: 14.1 versions prior to 14.1R10, 14.1R9; 14.1X53 versions prior to 14.1X53-D47; 15.1 versions prior to 15.1R4-S9, 15.1R6-S6, 15.1R7; 15.1X49 versions prior to 15.1X49-D100; 15.1X53 versions prior to 15.1X53-D59; 16.1 versions prior to 16.1R3-S8, 16.1R4-S8, 16.1R5; 16.2 versions prior to 16.2R1-S6, 16.2R2; 17.1 versions prior to 17.1R2."}]}, "exploit": [{"lang": "en", "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}], "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.0"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "weak encryption\nman-in-the-middle attack\nbrute force attack\ndictionary attack"}]}]}, "references": {"reference_data": [{"name": "1040789", "refsource": "SECTRACK", "url": "http://www.securitytracker.com/id/1040789"}, {"name": "https://kb.juniper.net/JSA10854", "refsource": "CONFIRM", "url": "https://kb.juniper.net/JSA10854"}]}, "solution": [{"lang": "en", "value": "The following software releases have been updated to resolve this specific issue: 14.1R9, 14.1X53-D47, 15.1R4-S9, 15.1R6-S6, 15.1R7, 15.1X49-D100, 15.1X53-D59, 16.1R3-S8, 16.1R4-S8, 16.1R5, 16.2R1-S6, 16.2R2, 17.1R2, 17.2R1 and all subsequent releases."}], "source": {"advisory": "JSA10854", "defect": ["1251909"], "discovery": "INTERNAL", "found_during": "INTERNAL"}, "work_around": [{"lang": "en", "value": "Configure all 64 digits of a CKN.\nConfigure all 32 digits of a CAK.\n\nSee the junos task topic macsec for further information."}]}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-05T03:14:16.649Z"}, "title": "CVE Program Container", "references": [{"name": "1040789", "tags": ["vdb-entry", "x_refsource_SECTRACK", "x_transferred"], "url": "http://www.securitytracker.com/id/1040789"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://kb.juniper.net/JSA10854"}]}]}, "cveMetadata": {"assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "assignerShortName": "juniper", "cveId": "CVE-2018-0021", "datePublished": "2018-04-11T19:00:00Z", "dateReserved": "2017-11-16T00:00:00", "dateUpdated": "2024-09-17T00:36:02.834Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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Hence, Juniper devices configured with short MacSec keys are at risk to an increased likelihood that an attacker will discover the secret passphrases configured for these keys through dictionary-based and brute-force-based attacks using spoofed packets. Affected releases are Juniper Networks Junos OS: 14.1 versions prior to 14.1R10, 14.1R9; 14.1X53 versions prior to 14.1X53-D47; 15.1 versions prior to 15.1R4-S9, 15.1R6-S6, 15.1R7; 15.1X49 versions prior to 15.1X49-D100; 15.1X53 versions prior to 15.1X53-D59; 16.1 versions prior to 16.1R3-S8, 16.1R4-S8, 16.1R5; 16.2 versions prior to 16.2R1-S6, 16.2R2; 17.1 versions prior to 17.1R2."}, {"lang": "es", "value": "Si no se configuran todos los 64 d\u00edgitos del nombre de la clave de asociaci\u00f3n de conectividad (CNK) o todos los 32 d\u00edgitos de la clave de asociaci\u00f3n de conectividad (CAK), el resto de d\u00edgitos se configurar\u00e1n autom\u00e1ticamente a 0. Por lo tanto, los dispositivos Juniper configurados con claves MacSec cortas est\u00e1n en riesgo de que sea m\u00e1s probable que un atacante descubra las frases de contrase\u00f1as secretas configuradas para estas claves a trav\u00e9s de ataques basados en diccionario y de fuerza bruta mediante paquetes suplantados. Las versiones afectadas son Juniper Networks Junos OS: 14.1 anteriores a 14.1R10, 14.1R9; 14.1X53 anteriores a 14.1X53-D47; 15.1 anteriores a 15.1R4-S9, 15.1R6-S6, 15.1R7; 15.1X49 anteriores a 15.1X49-D100; 15.1X53 anteriores a 15.1X53-D59; 16.1 anteriores a 16.1R3-S8, 16.1R4-S8, 16.1R5; 16.2 anteriores a 16.2R1-S6, 16.2R2 y 17.1 anteriores a 17.1R2."}], "id": "CVE-2018-0021", "lastModified": "2024-11-21T03:37:22.590", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 3.3, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:A/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 6.5, "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": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 2.1, "impactScore": 6.0, "source": "sirt@juniper.net", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2018-04-11T19:29:00.587", "references": [{"source": "sirt@juniper.net", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securitytracker.com/id/1040789"}, {"source": "sirt@juniper.net", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA10854"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securitytracker.com/id/1040789"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA10854"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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