{"containers": {"cna": {"affected": [{"platforms": ["SRX300 series"], "product": "Junos OS", "vendor": "Juniper Networks", "versions": [{"status": "affected", "version": "15.1X49 prior to 15.1X49-D100"}]}], "credits": [{"lang": "en", "value": "Eric Haszlakiewicz and Thor Simon of Two Sigma Investments, LP"}], "datePublic": "2017-07-12T00:00:00", "descriptions": [{"lang": "en", "value": "MACsec feature on Juniper Networks Junos OS 15.1X49 prior to 15.1X49-D100 on SRX300 series does not report errors when a secure link can not be established. It falls back to an unencrypted link. This can happen when MACsec is configured on ports that are not capable of MACsec or when a secure link can not be established. This can mislead customers into believing that a link is secure. On SRX 300 series devices, prior to 15.1X49-D100, MACsec was only supported on control and fabric ports of SRX340 and SRX345 devices. SRX300 and and SRX320 did not have any MACsec capable ports. Configuring MACsec on ports that were not MACsec capable would have resulted in this issue. Affected releases are Juniper Networks Junos OS 15.1X49 prior to 15.1X49-D100 on SRX300 series."}], "metrics": [{"cvssV3_0": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "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:N", "version": "3.0"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-392", "description": "CWE-392: Missing Report of Error Condition", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2017-07-15T09:57:01", "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "shortName": "juniper"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://kb.juniper.net/JSA10790"}, {"name": "1038890", "tags": ["vdb-entry", "x_refsource_SECTRACK"], "url": "http://www.securitytracker.com/id/1038890"}], "title": "SRX Series: MACsec failure to report errors", "workarounds": [{"lang": "en", "value": "There are no viable workarounds for this issue.\nIt is good security practice to limit the exploitable attack surface of critical infrastructure networking equipment. Use access lists or firewall filters to limit access to the device from trusted, administrative networks or hosts."}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "sirt@juniper.net", "DATE_PUBLIC": "2017-07-12T09:00", "ID": "CVE-2017-2342", "STATE": "PUBLIC", "TITLE": "SRX Series: MACsec failure to report errors"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Junos OS", "version": {"version_data": [{"platform": "SRX300 series", "version_value": "15.1X49 prior to 15.1X49-D100"}]}}]}, "vendor_name": "Juniper Networks"}]}}, "configuration": [], "credit": ["Eric Haszlakiewicz and Thor Simon of Two Sigma Investments, LP"], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "MACsec feature on Juniper Networks Junos OS 15.1X49 prior to 15.1X49-D100 on SRX300 series does not report errors when a secure link can not be established. It falls back to an unencrypted link. This can happen when MACsec is configured on ports that are not capable of MACsec or when a secure link can not be established. This can mislead customers into believing that a link is secure. On SRX 300 series devices, prior to 15.1X49-D100, MACsec was only supported on control and fabric ports of SRX340 and SRX345 devices. SRX300 and and SRX320 did not have any MACsec capable ports. Configuring MACsec on ports that were not MACsec capable would have resulted in this issue. Affected releases are Juniper Networks Junos OS 15.1X49 prior to 15.1X49-D100 on SRX300 series."}]}, "exploit": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability.", "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "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:N", "version": "3.0"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-392: Missing Report of Error Condition"}]}]}, "references": {"reference_data": [{"name": "https://kb.juniper.net/JSA10790", "refsource": "CONFIRM", "url": "https://kb.juniper.net/JSA10790"}, {"name": "1038890", "refsource": "SECTRACK", "url": "http://www.securitytracker.com/id/1038890"}]}, "solution": "The following software releases have been updated to resolve this specific issue:15.1X49-D100 and all subsequent releases.\n\nThis issue is being tracked as PR 1244795 and 1261983 and are visible on the Customer Support website.", "work_around": [{"lang": "en", "value": "There are no viable workarounds for this issue.\nIt is good security practice to limit the exploitable attack surface of critical infrastructure networking equipment. Use access lists or firewall filters to limit access to the device from trusted, administrative networks or hosts."}]}}}, "cveMetadata": {"assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "assignerShortName": "juniper", "cveId": "CVE-2017-2342", "datePublished": "2017-07-12T00:00:00", "dateReserved": "2016-12-01T00:00:00", "dateUpdated": "2017-07-15T09:57:01", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.0"}

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It falls back to an unencrypted link. This can happen when MACsec is configured on ports that are not capable of MACsec or when a secure link can not be established. This can mislead customers into believing that a link is secure. On SRX 300 series devices, prior to 15.1X49-D100, MACsec was only supported on control and fabric ports of SRX340 and SRX345 devices. SRX300 and and SRX320 did not have any MACsec capable ports. Configuring MACsec on ports that were not MACsec capable would have resulted in this issue. Affected releases are Juniper Networks Junos OS 15.1X49 prior to 15.1X49-D100 on SRX300 series."}, {"lang": "es", "value": "La funci\u00f3n MACsec en Juniper Networks Junos OS versi\u00f3n 15.1X49 anterior a 15.1X49-D100 en la serie SRX300, no informa de errores cuando un enlace seguro no se puede establecer. Vuelve a un enlace sin cifrar. 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