{"schemaVersion":3,"id":"CVE-2018-0051","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A Denial of Service vulnerability in the SIP application layer gateway (ALG) component of Junos OS based platforms allows an attacker to crash MS-PIC, MS-MIC, MS-MPC, MS-DPC or SRX flow daemon (flowd) process. This issue affects Junos OS devices with NAT or stateful firewall configuration in combination with the SIP ALG enabled. SIP ALG is enabled by default on SRX Series devices except for SRX-HE devices. SRX-HE devices have SIP ALG disabled by default. The status of ALGs in SRX device can be obtained by executing the command: show security alg status Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D77; 12.3X48 versions prior to 12.3X48-D70; 15.1X49 versions prior to 15.1X49-D140; 15.1 versions prior to 15.1R4-S9, 15.1R7-S1; 15.1F6; 16.1 versions prior to 16.1R4-S9, 16.1R6-S1, 16.1R7; 16.2 versions prior to 16.2R2-S7, 16.2R3; 17.1 versions prior to 17.1R2-S7, 17.1R3; 17.2 versions prior to 17.2R1-S6, 17.2R2-S4, 17.2R3; 17.3 versions prior to 17.3R1-S5, 17.3R2-S2, 17.3R3; 17.4 versions prior to 17.4R2. No other Juniper Networks products or platforms are affected by this issue.","dates":{"published":"2018-10-10T18:00:00.000Z","modified":"2024-09-16T23:00:45.279Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.0","versionLabel":"v3.0","source":"CVE.org","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"CVE.org","score":7.5,"severity":"high","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":5.9,"severity":"medium","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":4.3,"severity":"medium","vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01594,"percentile":0.75371,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.01594},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01594,"percentile":0.75371}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01594,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01594,"percentile":0.75371}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-20","name":"Improper Input Validation","description":"The product receives input or data, but it does\n        not validate or incorrectly validates that the input has the\n        properties that are required to process the data safely and\n        correctly.","type":"weakness","status":"Stable","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/20.html"}],"affected":[{"vendor":"juniper networks","product":"junos os","name":"Junos OS","label":"junos os","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 12.1X46, < 12.1X46-D77","noFixRecorded":false,"fixedIn":null},{"text":"≥ 12.3X48, < 12.3X48-D70","noFixRecorded":false,"fixedIn":null},{"text":"≥ 15.1X49, < 15.1X49-D140","noFixRecorded":false,"fixedIn":null},{"text":"15.1F6","noFixRecorded":false,"fixedIn":null},{"text":"≥ 15.1, < 15.1R4-S9, 15.1R7-S1","noFixRecorded":false,"fixedIn":null},{"text":"≥ 16.1, < 16.1R4-S9, 16.1R6-S1, 16.1R7","noFixRecorded":false,"fixedIn":null},{"text":"≥ 16.2, < 16.2R2-S7, 16.2R3","noFixRecorded":false,"fixedIn":null},{"text":"≥ 17.1, < 17.1R2-S7, 17.1R3","noFixRecorded":false,"fixedIn":null},{"text":"≥ 17.2, < 17.2R1-S6, 17.2R2-S4, 17.2R3","noFixRecorded":false,"fixedIn":null},{"text":"≥ 17.3, < 17.3R1-S5, 17.3R2-S2, 17.3R3","noFixRecorded":false,"fixedIn":null},{"text":"≥ 17.4, < 17.4R2","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 12.1X46, < 12.1X46-D77 | ≥ 12.3X48, < 12.3X48-D70 | ≥ 15.1X49, < 15.1X49-D140 | 15.1F6 | ≥ 15.1, < 15.1R4-S9, 15.1R7-S1 | ≥ 16.1, < 16.1R4-S9, 16.1R6-S1, 16.1R7 | ≥ 16.2, < 16.2R2-S7, 16.2R3 | ≥ 17.1, < 17.1R2-S7, 17.1R3 | ≥ 17.2, < 17.2R1-S6, 17.2R2-S4, 17.2R3 | ≥ 17.3, < 17.3R1-S5, 17.3R2-S2, 17.3R3 | ≥ 17.4, < 17.4R2","eol":null,"hubHref":"/vendor/juniper_networks/junos_os"},{"vendor":"juniper","product":"junos","name":"junos","label":"junos","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"12.1x46","noFixRecorded":false,"fixedIn":null},{"text":"12.1x46:d10","noFixRecorded":false,"fixedIn":null},{"text":"12.1x46:d15","noFixRecorded":false,"fixedIn":null},{"text":"12.1x46:d20","noFixRecorded":false,"fixedIn":null},{"text":"12.1x46:d25","noFixRecorded":false,"fixedIn":null},{"text":"12.1x46:d30","noFixRecorded":false,"fixedIn":null},{"text":"12.1x46:d35","noFixRecorded":false,"fixedIn":null},{"text":"12.1x46:d40","noFixRecorded":false,"fixedIn":null},{"text":"12.1x46:d45","noFixRecorded":false,"fixedIn":null},{"text":"12.1x46:d50","noFixRecorded":false,"fixedIn":null},{"text":"12.1x46:d55","noFixRecorded":false,"fixedIn":null},{"text":"12.1x46:d60","noFixRecorded":false,"fixedIn":null},{"text":"12.1x46:d65","noFixRecorded":false,"fixedIn":null},{"text":"12.3x48","noFixRecorded":false,"fixedIn":null},{"text":"12.3x48:d10","noFixRecorded":false,"fixedIn":null},{"text":"12.3x48:d15","noFixRecorded":false,"fixedIn":null},{"text":"12.3x48:d20","noFixRecorded":false,"fixedIn":null},{"text":"12.3x48:d25","noFixRecorded":false,"fixedIn":null},{"text":"12.3x48:d30","noFixRecorded":false,"fixedIn":null},{"text":"12.3x48:d35","noFixRecorded":false,"fixedIn":null},{"text":"12.3x48:d40","noFixRecorded":false,"fixedIn":null},{"text":"12.3x48:d45","noFixRecorded":false,"fixedIn":null},{"text":"12.3x48:d50","noFixRecorded":false,"fixedIn":null},{"text":"12.3x48:d55","noFixRecorded":false,"fixedIn":null},{"text":"12.3x48:d60","noFixRecorded":false,"fixedIn":null},{"text":"12.3x48:d65","noFixRecorded":false,"fixedIn":null},{"text":"15.1x49","noFixRecorded":false,"fixedIn":null},{"text":"15.1x49:d10","noFixRecorded":false,"fixedIn":null},{"text":"15.1x49:d100","noFixRecorded":false,"fixedIn":null},{"text":"15.1x49:d110","noFixRecorded":false,"fixedIn":null},{"text":"15.1x49:d120","noFixRecorded":false,"fixedIn":null},{"text":"15.1x49:d130","noFixRecorded":false,"fixedIn":null},{"text":"15.1x49:d20","noFixRecorded":false,"fixedIn":null},{"text":"15.1x49:d30","noFixRecorded":false,"fixedIn":null},{"text":"15.1x49:d35","noFixRecorded":false,"fixedIn":null},{"text":"15.1x49:d40","noFixRecorded":false,"fixedIn":null},{"text":"15.1x49:d45","noFixRecorded":false,"fixedIn":null},{"text":"15.1x49:d50","noFixRecorded":false,"fixedIn":null},{"text":"15.1x49:d55","noFixRecorded":false,"fixedIn":null},{"text":"15.1x49:d60","noFixRecorded":false,"fixedIn":null},{"text":"15.1x49:d65","noFixRecorded":false,"fixedIn":null},{"text":"15.1x49:d75","noFixRecorded":false,"fixedIn":null},{"text":"15.1x49:d80","noFixRecorded":false,"fixedIn":null},{"text":"15.1x49:d90","noFixRecorded":false,"fixedIn":null},{"text":"15.1","noFixRecorded":false,"fixedIn":null},{"text":"15.1:f6","noFixRecorded":false,"fixedIn":null},{"text":"15.1:r1","noFixRecorded":false,"fixedIn":null},{"text":"15.1:r2","noFixRecorded":false,"fixedIn":null},{"text":"15.1:r3","noFixRecorded":false,"fixedIn":null},{"text":"15.1:r7-s1","noFixRecorded":false,"fixedIn":null},{"text":"16.1","noFixRecorded":false,"fixedIn":null},{"text":"16.1:r1","noFixRecorded":false,"fixedIn":null},{"text":"16.1:r2","noFixRecorded":false,"fixedIn":null},{"text":"16.1:r3","noFixRecorded":false,"fixedIn":null},{"text":"16.1:r5","noFixRecorded":false,"fixedIn":null},{"text":"16.1:r6-s1","noFixRecorded":false,"fixedIn":null},{"text":"16.1:r7","noFixRecorded":false,"fixedIn":null},{"text":"16.2","noFixRecorded":false,"fixedIn":null},{"text":"16.2:r1","noFixRecorded":false,"fixedIn":null},{"text":"16.2:r3","noFixRecorded":false,"fixedIn":null},{"text":"17.1","noFixRecorded":false,"fixedIn":null},{"text":"17.1:r1","noFixRecorded":false,"fixedIn":null},{"text":"17.1:r2","noFixRecorded":false,"fixedIn":null},{"text":"17.1:r3","noFixRecorded":false,"fixedIn":null},{"text":"17.2","noFixRecorded":false,"fixedIn":null},{"text":"17.2:r1","noFixRecorded":false,"fixedIn":null},{"text":"17.2:r2-s4","noFixRecorded":false,"fixedIn":null},{"text":"17.2:r3","noFixRecorded":false,"fixedIn":null},{"text":"17.3","noFixRecorded":false,"fixedIn":null},{"text":"17.3:r2-s2","noFixRecorded":false,"fixedIn":null},{"text":"17.3:r3","noFixRecorded":false,"fixedIn":null},{"text":"17.4","noFixRecorded":false,"fixedIn":null},{"text":"17.4:r1","noFixRecorded":false,"fixedIn":null}],"versionsText":"12.1x46 | 12.1x46:d10 | 12.1x46:d15 | 12.1x46:d20 | 12.1x46:d25 | 12.1x46:d30 | 12.1x46:d35 | 12.1x46:d40 | 12.1x46:d45 | 12.1x46:d50 | 12.1x46:d55 | 12.1x46:d60 | 12.1x46:d65 | 12.3x48 | 12.3x48:d10 | 12.3x48:d15 | 12.3x48:d20 | 12.3x48:d25 | 12.3x48:d30 | 12.3x48:d35 | 12.3x48:d40 | 12.3x48:d45 | 12.3x48:d50 | 12.3x48:d55 | 12.3x48:d60 | 12.3x48:d65 | 15.1x49 | 15.1x49:d10 | 15.1x49:d100 | 15.1x49:d110 | 15.1x49:d120 | 15.1x49:d130 | 15.1x49:d20 | 15.1x49:d30 | 15.1x49:d35 | 15.1x49:d40 | 15.1x49:d45 | 15.1x49:d50 | 15.1x49:d55 | 15.1x49:d60 | 15.1x49:d65 | 15.1x49:d75 | 15.1x49:d80 | 15.1x49:d90 | 15.1 | 15.1:f6 | 15.1:r1 | 15.1:r2 | 15.1:r3 | 15.1:r7-s1 | 16.1 | 16.1:r1 | 16.1:r2 | 16.1:r3 | 16.1:r5 | 16.1:r6-s1 | 16.1:r7 | 16.2 | 16.2:r1 | 16.2:r3 | 17.1 | 17.1:r1 | 17.1:r2 | 17.1:r3 | 17.2 | 17.2:r1 | 17.2:r2-s4 | 17.2:r3 | 17.3 | 17.3:r2-s2 | 17.3:r3 | 17.4 | 17.4:r1","eol":null,"hubHref":"/vendor/juniper/junos"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://kb.juniper.net/JSA10885","label":"kb.juniper.net/JSA10885","hostname":"kb.juniper.net","tags":["X Refsource CONFIRM","Vendor Advisory"]},{"url":"http://www.securitytracker.com/id/1041852","label":"www.securitytracker.com/id/1041852","hostname":"www.securitytracker.com","tags":["VDB Entry","X Refsource SECTRACK","Third Party Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2018-10-10T18:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-09-16T23:00:45.279Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":30,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T21:37:54.247Z","stale":false,"partial":false}}