{"id":"CVE-2018-0031","state":"PUBLISHED","title":"Junos OS: Receipt of specially crafted UDP packets over MPLS may bypass stateless IP firewall rules","description":"Receipt of specially crafted UDP/IP packets over MPLS may be able to bypass a stateless firewall filter. The crafted UDP packets must be encapsulated and meet a very specific packet format to be classified in a way that bypasses IP firewall filter rules. The packets themselves do not cause a service interruption (e.g. RPD crash), but receipt of a high rate of UDP packets may be able to contribute to a denial of service attack. This issue only affects processing of transit UDP/IP packets over MPLS, received on an interface with MPLS enabled. TCP packet processing and non-MPLS encapsulated UDP packet processing are unaffected by this issue. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D76; 12.3 versions prior to 12.3R12-S10; 12.3X48 versions prior to 12.3X48-D66, 12.3X48-D70; 14.1X53 versions prior to 14.1X53-D47; 15.1 versions prior to 15.1F6-S10, 15.1R4-S9, 15.1R6-S6, 15.1R7; 15.1X49 versions prior to 15.1X49-D131, 15.1X49-D140; 15.1X53 versions prior to 15.1X53-D59 on EX2300/EX3400; 15.1X53 versions prior to 15.1X53-D67 on QFX10K; 15.1X53 versions prior to 15.1X53-D233 on QFX5200/QFX5110; 15.1X53 versions prior to 15.1X53-D471, 15.1X53-D490 on NFX; 16.1 versions prior to 16.1R3-S8, 16.1R4-S9, 16.1R5-S4, 16.1R6-S3, 16.1R7; 16.2 versions prior to 16.2R1-S6, 16.2R2-S5, 16.2R3; 17.1 versions prior to 17.1R1-S7, 17.1R2-S7, 17.1R3; 17.2 versions prior to 17.2R1-S6, 17.2R2-S4, 17.2R3; 17.2X75 versions prior to 17.2X75-D100; 17.3 versions prior to 17.3R1-S4, 17.3R2-S2, 17.3R3; 17.4 versions prior to 17.4R1-S3, 17.4R2; 18.1 versions prior to 18.1R2; 18.2X75 versions prior to 18.2X75-D5.","publishedAt":"2018-07-11T18:00:00.000Z","updatedAt":"2024-09-17T02:21:45.758Z","severity":{"score":5.3,"label":"Medium","version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","source":"juniper"},"assigner":"juniper","products":["Juniper Networks Junos OS"],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"12.1X46","status":"affected","lessThan":"12.1X46-D76","versionType":"custom"},{"version":"12.3X48","status":"affected","lessThan":"12.3X48-D66, 12.3X48-D70","versionType":"custom"},{"version":"15.1X49","status":"affected","lessThan":"15.1X49-D131, 15.1X49-D140","versionType":"custom"}],"platforms":["SRX Series"]},{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"12.3","status":"affected","lessThan":"12.3R12-S10","versionType":"custom"},{"version":"15.1","status":"affected","lessThan":"15.1F6-S10, 15.1R4-S9, 15.1R6-S6, 15.1R7","versionType":"custom"},{"version":"16.1","status":"affected","lessThan":"16.1R3-S8, 16.1R4-S9, 16.1R5-S4, 16.1R6-S3, 16.1R7","versionType":"custom"},{"version":"16.2","status":"affected","lessThan":"16.2R1-S6, 16.2R2-S5, 16.2R3","versionType":"custom"},{"version":"17.1","status":"affected","lessThan":"17.1R1-S7, 17.1R2-S7, 17.1R3","versionType":"custom"},{"version":"17.2","status":"affected","lessThan":"17.2R1-S6, 17.2R2-S4, 17.2R3","versionType":"custom"},{"version":"17.2X75","status":"affected","lessThan":"17.2X75-D100","versionType":"custom"},{"version":"17.3","status":"affected","lessThan":"17.3R1-S4, 17.3R2-S2, 17.3R3","versionType":"custom"},{"version":"17.4","status":"affected","lessThan":"17.4R1-S3, 17.4R2","versionType":"custom"},{"version":"18.1","status":"affected","lessThan":"18.1R2","versionType":"custom"},{"version":"18.2X75","status":"affected","lessThan":"18.2X75-D5","versionType":"custom"}]},{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"14.1X53","status":"affected","lessThan":"14.1X53-D47","versionType":"custom"}],"platforms":["EX2200/VC, EX3200, EX3300/VC, EX4200, EX4300, EX4550/VC, EX4600, EX6200, EX8200/VC (XRE), QFX3500, QFX3600, QFX5100"]},{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"15.1X53","status":"affected","lessThan":"15.1X53-D59","versionType":"custom"}],"platforms":["EX2300, EX3400"]},{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"15.1X53","status":"affected","lessThan":"15.1X53-D67","versionType":"custom"}],"platforms":["QFX10000 Series"]},{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"15.1X53","status":"affected","lessThan":"15.1X53-D233","versionType":"custom"}],"platforms":["QFX5110, QFX5200"]},{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"15.1X53","status":"affected","lessThan":"15.1X53-D471, 15.1X53-D490","versionType":"custom"}],"platforms":["NFX150, NFX250"]}],"references":["https://kb.juniper.net/JSA10865","http://www.securitytracker.com/id/1041326"],"weaknesses":[],"ingestedAt":"2026-10-29T19:44:03.729Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2018/0xxx/CVE-2018-0031.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2018-0031","state":"PUBLISHED","datePublished":"2018-07-11T18:00:00.000Z","dateUpdated":"2024-09-17T02:21:45.758Z","assignerShortName":"juniper","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateReserved":"2017-11-16T00:00:00.000Z"},"containers":{"cna":{"title":"Junos OS: Receipt of specially crafted UDP packets over MPLS may bypass stateless IP firewall rules","descriptions":[{"lang":"en","value":"Receipt of specially crafted UDP/IP packets over MPLS may be able to bypass a stateless firewall filter. The crafted UDP packets must be encapsulated and meet a very specific packet format to be classified in a way that bypasses IP firewall filter rules. The packets themselves do not cause a service interruption (e.g. RPD crash), but receipt of a high rate of UDP packets may be able to contribute to a denial of service attack. This issue only affects processing of transit UDP/IP packets over MPLS, received on an interface with MPLS enabled. TCP packet processing and non-MPLS encapsulated UDP packet processing are unaffected by this issue. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D76; 12.3 versions prior to 12.3R12-S10; 12.3X48 versions prior to 12.3X48-D66, 12.3X48-D70; 14.1X53 versions prior to 14.1X53-D47; 15.1 versions prior to 15.1F6-S10, 15.1R4-S9, 15.1R6-S6, 15.1R7; 15.1X49 versions prior to 15.1X49-D131, 15.1X49-D140; 15.1X53 versions prior to 15.1X53-D59 on EX2300/EX3400; 15.1X53 versions prior to 15.1X53-D67 on QFX10K; 15.1X53 versions prior to 15.1X53-D233 on QFX5200/QFX5110; 15.1X53 versions prior to 15.1X53-D471, 15.1X53-D490 on NFX; 16.1 versions prior to 16.1R3-S8, 16.1R4-S9, 16.1R5-S4, 16.1R6-S3, 16.1R7; 16.2 versions prior to 16.2R1-S6, 16.2R2-S5, 16.2R3; 17.1 versions prior to 17.1R1-S7, 17.1R2-S7, 17.1R3; 17.2 versions prior to 17.2R1-S6, 17.2R2-S4, 17.2R3; 17.2X75 versions prior to 17.2X75-D100; 17.3 versions prior to 17.3R1-S4, 17.3R2-S2, 17.3R3; 17.4 versions prior to 17.4R1-S3, 17.4R2; 18.1 versions prior to 18.1R2; 18.2X75 versions prior to 18.2X75-D5."}],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"12.1X46","status":"affected","lessThan":"12.1X46-D76","versionType":"custom"},{"version":"12.3X48","status":"affected","lessThan":"12.3X48-D66, 12.3X48-D70","versionType":"custom"},{"version":"15.1X49","status":"affected","lessThan":"15.1X49-D131, 15.1X49-D140","versionType":"custom"}],"platforms":["SRX Series"]},{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"12.3","status":"affected","lessThan":"12.3R12-S10","versionType":"custom"},{"version":"15.1","status":"affected","lessThan":"15.1F6-S10, 15.1R4-S9, 15.1R6-S6, 15.1R7","versionType":"custom"},{"version":"16.1","status":"affected","lessThan":"16.1R3-S8, 16.1R4-S9, 16.1R5-S4, 16.1R6-S3, 16.1R7","versionType":"custom"},{"version":"16.2","status":"affected","lessThan":"16.2R1-S6, 16.2R2-S5, 16.2R3","versionType":"custom"},{"version":"17.1","status":"affected","lessThan":"17.1R1-S7, 17.1R2-S7, 17.1R3","versionType":"custom"},{"version":"17.2","status":"affected","lessThan":"17.2R1-S6, 17.2R2-S4, 17.2R3","versionType":"custom"},{"version":"17.2X75","status":"affected","lessThan":"17.2X75-D100","versionType":"custom"},{"version":"17.3","status":"affected","lessThan":"17.3R1-S4, 17.3R2-S2, 17.3R3","versionType":"custom"},{"version":"17.4","status":"affected","lessThan":"17.4R1-S3, 17.4R2","versionType":"custom"},{"version":"18.1","status":"affected","lessThan":"18.1R2","versionType":"custom"},{"version":"18.2X75","status":"affected","lessThan":"18.2X75-D5","versionType":"custom"}]},{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"14.1X53","status":"affected","lessThan":"14.1X53-D47","versionType":"custom"}],"platforms":["EX2200/VC, EX3200, EX3300/VC, EX4200, EX4300, EX4550/VC, EX4600, EX6200, EX8200/VC (XRE), QFX3500, QFX3600, QFX5100"]},{"vendor":"Juniper Networks","product":"Junos 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NFX250"]}],"references":[{"url":"https://kb.juniper.net/JSA10865","tags":["x_refsource_CONFIRM"]},{"url":"http://www.securitytracker.com/id/1041326","name":"1041326","tags":["vdb-entry","x_refsource_SECTRACK"]}],"metrics":[{"cvssV3_0":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.0"}}],"problemTypes":[{"descriptions":[{"description":"Firewall bypass","lang":"en","type":"text"}]},{"descriptions":[{"description":"Denial of Service","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"juniper","dateUpdated":"2018-07-27T09:57:01.000Z","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968"},"credits":[{"lang":"en","value":"Internet2"},{"lang":"en","value":"The Indiana University GlobalNOC"}],"datePublic":"2018-07-11T00:00:00.000Z","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-D76, 12.3X48-D66, 12.3X48-D70, 14.1X53-D47, 15.1F6-S10, 15.1R4-S9, 15.1R6-S6, 15.1R7, 15.1X49-D131, 15.1X49-D140, 15.1X53-D233, 15.1X53-D471, 15.1X53-D490, 15.1X53-D59, 15.1X53-D67, 16.1R3-S8, 16.1R4-S9, 16.1R5-S4, 16.1R6-S3, 16.1R7, 16.2R1-S6, 16.2R2-S5, 16.2R3, 17.1R1-S7, 17.1R2-S7, 17.1R3, 17.2R1-S6, 17.2R2-S4, 17.2R3, 17.2X75-D100, 17.3R1-S4, 17.3R2-S2, 17.3R3, 17.4R1-S3, 17.4R2, 18.1R2, 18.2R1, 18.2X75-D5, and all subsequent releases."}],"source":{"advisory":"JSA10865","defect":["1326402"],"discovery":"EXTERNAL"},"workarounds":[{"lang":"en","value":"There are no viable workarounds for this issue."}],"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"sirt@juniper.net","DATE_PUBLIC":"2018-07-11T16:00:00.000Z","ID":"CVE-2018-0031","STATE":"PUBLIC","TITLE":"Junos OS: Receipt of specially crafted UDP packets over MPLS may bypass stateless IP firewall rules"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Junos OS","version":{"version_data":[{"affected":"<","platform":"SRX Series","version_affected":"<","version_name":"12.1X46","version_value":"12.1X46-D76"},{"affected":"<","version_affected":"<","version_name":"12.3","version_value":"12.3R12-S10"},{"affected":"<","platform":"SRX Series","version_affected":"<","version_name":"12.3X48","version_value":"12.3X48-D66, 12.3X48-D70"},{"affected":"<","platform":"EX2200/VC, EX3200, EX3300/VC, EX4200, EX4300, EX4550/VC, EX4600, EX6200, EX8200/VC (XRE), QFX3500, QFX3600, 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16.1R7"},{"affected":"<","version_affected":"<","version_name":"16.2","version_value":"16.2R1-S6, 16.2R2-S5, 16.2R3"},{"affected":"<","version_affected":"<","version_name":"17.1","version_value":"17.1R1-S7, 17.1R2-S7, 17.1R3"},{"affected":"<","version_affected":"<","version_name":"17.2","version_value":"17.2R1-S6, 17.2R2-S4, 17.2R3"},{"affected":"<","version_affected":"<","version_name":"17.2X75","version_value":"17.2X75-D100"},{"affected":"<","version_affected":"<","version_name":"17.3","version_value":"17.3R1-S4, 17.3R2-S2, 17.3R3"},{"affected":"<","version_affected":"<","version_name":"17.4","version_value":"17.4R1-S3, 17.4R2"},{"affected":"<","version_affected":"<","version_name":"18.1","version_value":"18.1R2"},{"affected":"<","version_affected":"<","version_name":"18.2X75","version_value":"18.2X75-D5"}]}}]},"vendor_name":"Juniper Networks"}]}},"credit":[{"lang":"eng","value":"Internet2"},{"lang":"eng","value":"The Indiana University GlobalNOC"}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Receipt of specially crafted UDP/IP packets over MPLS may be able to bypass a stateless firewall filter. The crafted UDP packets must be encapsulated and meet a very specific packet format to be classified in a way that bypasses IP firewall filter rules. The packets themselves do not cause a service interruption (e.g. RPD crash), but receipt of a high rate of UDP packets may be able to contribute to a denial of service attack. This issue only affects processing of transit UDP/IP packets over MPLS, received on an interface with MPLS enabled. TCP packet processing and non-MPLS encapsulated UDP packet processing are unaffected by this issue. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D76; 12.3 versions prior to 12.3R12-S10; 12.3X48 versions prior to 12.3X48-D66, 12.3X48-D70; 14.1X53 versions prior to 14.1X53-D47; 15.1 versions prior to 15.1F6-S10, 15.1R4-S9, 15.1R6-S6, 15.1R7; 15.1X49 versions prior to 15.1X49-D131, 15.1X49-D140; 15.1X53 versions prior to 15.1X53-D59 on EX2300/EX3400; 15.1X53 versions prior to 15.1X53-D67 on QFX10K; 15.1X53 versions prior to 15.1X53-D233 on QFX5200/QFX5110; 15.1X53 versions prior to 15.1X53-D471, 15.1X53-D490 on NFX; 16.1 versions prior to 16.1R3-S8, 16.1R4-S9, 16.1R5-S4, 16.1R6-S3, 16.1R7; 16.2 versions prior to 16.2R1-S6, 16.2R2-S5, 16.2R3; 17.1 versions prior to 17.1R1-S7, 17.1R2-S7, 17.1R3; 17.2 versions prior to 17.2R1-S6, 17.2R2-S4, 17.2R3; 17.2X75 versions prior to 17.2X75-D100; 17.3 versions prior to 17.3R1-S4, 17.3R2-S2, 17.3R3; 17.4 versions prior to 17.4R1-S3, 17.4R2; 18.1 versions prior to 18.1R2; 18.2X75 versions prior to 18.2X75-D5."}]},"exploit":[{"lang":"en","value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.0"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Firewall bypass"}]},{"description":[{"lang":"eng","value":"Denial of Service"}]}]},"references":{"reference_data":[{"name":"https://kb.juniper.net/JSA10865","refsource":"CONFIRM","url":"https://kb.juniper.net/JSA10865"},{"name":"1041326","refsource":"SECTRACK","url":"http://www.securitytracker.com/id/1041326"}]},"solution":[{"lang":"en","value":"The following software releases have been updated to resolve this specific issue: 12.1X46-D76, 12.3X48-D66, 12.3X48-D70, 14.1X53-D47, 15.1F6-S10, 15.1R4-S9, 15.1R6-S6, 15.1R7, 15.1X49-D131, 15.1X49-D140, 15.1X53-D233, 15.1X53-D471, 15.1X53-D490, 15.1X53-D59, 15.1X53-D67, 16.1R3-S8, 16.1R4-S9, 16.1R5-S4, 16.1R6-S3, 16.1R7, 16.2R1-S6, 16.2R2-S5, 16.2R3, 17.1R1-S7, 17.1R2-S7, 17.1R3, 17.2R1-S6, 17.2R2-S4, 17.2R3, 17.2X75-D100, 17.3R1-S4, 17.3R2-S2, 17.3R3, 17.4R1-S3, 17.4R2, 18.1R2, 18.2R1, 18.2X75-D5, and all subsequent releases."}],"source":{"advisory":"JSA10865","defect":["1326402"],"discovery":"EXTERNAL"},"work_around":[{"lang":"en","value":"There are no viable workarounds for this issue."}]}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://kb.juniper.net/JSA10865","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://www.securitytracker.com/id/1041326","name":"1041326","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-05T03:14:16.595Z"}}]}}}