{"id":"CVE-2019-0033","state":"PUBLISHED","title":"SRX Series: A remote attacker may cause a high CPU Denial of Service to the device when proxy ARP is configured.","description":"A firewall bypass vulnerability in the proxy ARP service of Juniper Networks Junos OS allows an attacker to cause a high CPU condition leading to a Denial of Service (DoS). This issue affects only IPv4. Affected releases are Juniper Networks Junos OS: 12.1X46 versions above and including 12.1X46-D25 prior to 12.1X46-D71, 12.1X46-D73 on SRX Series; 12.3X48 versions prior to 12.3X48-D50 on SRX Series; 15.1X49 versions prior to 15.1X49-D75 on SRX Series.","publishedAt":"2019-04-10T20:13:51.204Z","updatedAt":"2024-09-17T01:11:20.764Z","severity":{"score":7.5,"label":"High","version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"juniper"},"assigner":"juniper","products":["Juniper Networks Junos OS"],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"12.1X46-D25","status":"affected","lessThan":"12.1X46*","changes":[{"at":"12.1X46-D71, 12.1X46-D73","status":"unaffected"}],"versionType":"custom"},{"version":"12.3X48","status":"affected","lessThan":"12.3X48-D50","versionType":"custom"},{"version":"15.1X49","status":"affected","lessThan":"15.1X49-D75","versionType":"custom"}],"platforms":["SRX Series"]}],"references":["https://kb.juniper.net/JSA10922","http://www.securityfocus.com/bid/107882"],"weaknesses":["CWE-400"],"ingestedAt":"2026-10-29T19:45:08.139Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2019/0xxx/CVE-2019-0033.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2019-0033","state":"PUBLISHED","datePublished":"2019-04-10T20:13:51.204Z","dateUpdated":"2024-09-17T01:11:20.764Z","assignerShortName":"juniper","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateReserved":"2018-10-11T00:00:00.000Z"},"containers":{"cna":{"title":"SRX Series: A remote attacker may cause a high CPU Denial of Service to the device when proxy ARP is configured.","descriptions":[{"lang":"en","value":"A firewall bypass vulnerability in the proxy ARP service of Juniper Networks Junos OS allows an attacker to cause a high CPU condition leading to a Denial of Service (DoS). This issue affects only IPv4. Affected releases are Juniper Networks Junos OS: 12.1X46 versions above and including 12.1X46-D25 prior to 12.1X46-D71, 12.1X46-D73 on SRX Series; 12.3X48 versions prior to 12.3X48-D50 on SRX Series; 15.1X49 versions prior to 15.1X49-D75 on SRX Series."}],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"12.1X46-D25","status":"affected","lessThan":"12.1X46*","changes":[{"at":"12.1X46-D71, 12.1X46-D73","status":"unaffected"}],"versionType":"custom"},{"version":"12.3X48","status":"affected","lessThan":"12.3X48-D50","versionType":"custom"},{"version":"15.1X49","status":"affected","lessThan":"15.1X49-D75","versionType":"custom"}],"platforms":["SRX Series"]}],"references":[{"url":"https://kb.juniper.net/JSA10922","tags":["x_refsource_CONFIRM"]},{"url":"http://www.securityfocus.com/bid/107882","name":"107882","tags":["vdb-entry","x_refsource_BID"]}],"metrics":[{"cvssV3_0":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"juniper","dateUpdated":"2019-04-12T15:06:05.000Z","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968"},"configurations":[{"lang":"en","value":"An example configuration snippet is below: \n  root@device# show security nat proxy-arp  \n  interface ge-0/0/0.0 {                                                                                                                                                                         \n      address {                                                                                                                                                                                 \n          2.2.2.5/32;                                                                                                                                                                           \n      }                                                                                                                                                                                         \n  }"}],"datePublic":"2019-04-10T00:00:00.000Z","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: 12.1X46-D71, 12.1X46-D73, 12.3X48-D50, 15.1X49-D75, 17.3R1, and all subsequent releases."}],"source":{"advisory":"JSA10922","defect":["1208910"],"discovery":"USER"},"workarounds":[{"lang":"en","value":"Discontinue use of proxy ARP.\nAn example configuration snippet is below:\n  deactivate security nat proxy-arp interface ge-0/0/0.0 address 2.2.2.5/32\n(or)\n  delete security nat proxy-arp interface ge-0/0/0.0 address 2.2.2.5/32 \n \nThere are no other viable workarounds for this issue."}],"x_generator":{"engine":"Vulnogram 0.0.6"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"sirt@juniper.net","DATE_PUBLIC":"2019-04-10T16:00:00.000Z","ID":"CVE-2019-0033","STATE":"PUBLIC","TITLE":"SRX Series: A remote attacker may cause a high CPU Denial of Service to the device when proxy ARP is configured."},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Junos OS","version":{"version_data":[{"platform":"SRX Series","version_affected":">=","version_name":"12.1X46","version_value":"12.1X46-D25"},{"platform":"SRX Series","version_affected":"<","version_name":"12.1X46","version_value":"12.1X46-D71, 12.1X46-D73"},{"platform":"SRX Series","version_affected":"<","version_name":"12.3X48","version_value":"12.3X48-D50"},{"platform":"SRX Series","version_affected":"<","version_name":"15.1X49","version_value":"15.1X49-D75"}]}}]},"vendor_name":"Juniper Networks"}]}},"configuration":[{"lang":"en","value":"An example configuration snippet is below: \n  root@device# show security nat proxy-arp  \n  interface ge-0/0/0.0 {                                                                                                                                                                         \n      address {                                                                                                                                                                                 \n          2.2.2.5/32;                                                                                                                                                                           \n      }                                                                                                                                                                                         \n  }"}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"A firewall bypass vulnerability in the proxy ARP service of Juniper Networks Junos OS allows an attacker to cause a high CPU condition leading to a Denial of Service (DoS). This issue affects only IPv4. Affected releases are Juniper Networks Junos OS: 12.1X46 versions above and including 12.1X46-D25 prior to 12.1X46-D71, 12.1X46-D73 on SRX Series; 12.3X48 versions prior to 12.3X48-D50 on SRX Series; 15.1X49 versions prior to 15.1X49-D75 on SRX Series."}]},"exploit":[{"lang":"en","value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"generator":{"engine":"Vulnogram 0.0.6"},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.0"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-400 Uncontrolled Resource Consumption"}]}]},"references":{"reference_data":[{"name":"https://kb.juniper.net/JSA10922","refsource":"CONFIRM","url":"https://kb.juniper.net/JSA10922"},{"name":"107882","refsource":"BID","url":"http://www.securityfocus.com/bid/107882"}]},"solution":[{"lang":"en","value":"The following software releases have been updated to resolve this specific issue: 12.1X46-D71, 12.1X46-D73, 12.3X48-D50, 15.1X49-D75, 17.3R1, and all subsequent releases."}],"source":{"advisory":"JSA10922","defect":["1208910"],"discovery":"USER"},"work_around":[{"lang":"en","value":"Discontinue use of proxy ARP.\nAn example configuration snippet is below:\n  deactivate security nat proxy-arp interface ge-0/0/0.0 address 2.2.2.5/32\n(or)\n  delete security nat proxy-arp interface ge-0/0/0.0 address 2.2.2.5/32 \n \nThere are no other viable workarounds for this issue."}]}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://kb.juniper.net/JSA10922","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://www.securityfocus.com/bid/107882","name":"107882","tags":["vdb-entry","x_refsource_BID","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T17:37:07.407Z"}}]}}}