{"containers":{"cna":{"affected":[{"platforms":["MX Series"],"product":"Junos OS","vendor":"Juniper Networks","versions":[{"lessThan":"17.2R1","status":"unaffected","version":"unspecified","versionType":"custom"},{"lessThan":"17.2*","status":"affected","version":"17.2R1","versionType":"custom"},{"lessThan":"17.3R3-S9","status":"affected","version":"17.3","versionType":"custom"},{"lessThan":"17.4R2-S12, 17.4R3-S3","status":"affected","version":"17.4","versionType":"custom"},{"lessThan":"18.1R3-S11","status":"affected","version":"18.1","versionType":"custom"},{"lessThan":"18.2R2-S6, 18.2R3-S3","status":"affected","version":"18.2","versionType":"custom"},{"lessThan":"18.3R2-S4, 18.3R3-S1","status":"affected","version":"18.3","versionType":"custom"},{"lessThan":"18.4R1-S8, 18.4R2-S5, 18.4R3","status":"affected","version":"18.4","versionType":"custom"},{"lessThan":"19.1R1-S6, 19.1R2-S2, 19.1R3","status":"affected","version":"19.1","versionType":"custom"},{"lessThan":"19.2R1-S5, 19.2R2","status":"affected","version":"19.2","versionType":"custom"},{"lessThan":"19.3R2-S5, 19.3R3","status":"affected","version":"19.3","versionType":"custom"}]}],"configurations":[{"lang":"en","value":"The following minimal configuration is necessary: \n\n  [chassis fpc <fpc-number> pic <pic-number> inline-services bandwidth <bandwidth>]\n  [interfaces <si-interface-name> unit <inside-logical-unit> family inet]\n  [interfaces <si-interface-name> unit <inside-logical-unit> family inet6]\n  [interfaces <si-interface-name> unit <inside-logical-unit> service-domain inside]\n  [interfaces <si-interface-name> unit <outside-logical-unit> family inet]\n  [interfaces <si-interface-name> unit <outside-logical-unit> family inet6]\n  [interfaces <si-interface-name> unit <outside-logical-unit> service-domain outside]\n  [services softwire softwire-concentrator map-e <mape-instance-name> version03]\n  [services softwire softwire-concentrator map-e <mape-instance-name> softwire-address <IPv6-Address>]\n  [services softwire softwire-concentrator map-e <mape-instance-name> ipv4-prefix <IPv4-Prefix> mape-prefix <IPv6-Prefix>]\n  [services softwire softwire-concentrator map-e <mape-instance-name> ea-bits-len <0..48>]\n  [services softwire softwire-concentrator map-e <mape-instance-name> psid-off[set <0..16>]\n  [services softwire softwire-concentrator map-e <mape-instance-name> psid-length <0..16>]\n  [services softwire softwire-concentrator map-e <mape-instance-name> mtu-ipv6 <1280..9192>]\n  [services softwire softwire-concentrator map-e <mape-instance-name> v4-reassembly]\n  [services softwire rule <mape-rule-name> match-direction input term <term-name> then map-e <mape-instance-name>]\n  [services service-set <service-set-name> softwire-rules <mape-rule-name>]\n  [services service-set <service-set-name> next-hop-service inside-service-interface <si-interface-name.inside-logical-unit> outside-service-interface <si-interface-name.outside-logical-unit>]"}],"datePublic":"2021-10-13T00:00:00.000Z","descriptions":[{"lang":"en","value":"An Incorrect Behavior Order vulnerability in the MAP-E automatic tunneling mechanism of Juniper Networks Junos OS allows an attacker to send certain malformed IPv4 or IPv6 packets to cause a Denial of Service (DoS) to the PFE on the device which is disabled as a result of the processing of these packets. Continued receipt and processing of these malformed IPv4 or IPv6 packets will create a sustained Denial of Service (DoS) condition. This issue only affects MPC 7/8/9/10/11 cards, when MAP-E IP reassembly is enabled on these cards. An indicator of compromise is the output: FPC [\"FPC ID\" # e.g. \"0\"] PFE #{PFE ID # e.g. \"1\"] : Fabric Disabled Example: FPC 0 PFE #1 : Fabric Disabled when using the command: show chassis fabric fpcs An example of a healthy result of the command use would be: user@device-re1> show chassis fabric fpcs Fabric management FPC state: FPC 0 PFE #0 Plane 0: Plane enabled Plane 1: Plane enabled Plane 2: Plane enabled Plane 3: Plane enabled Plane 4: Plane enabled Plane 5: Plane enabled Plane 6: Plane enabled Plane 7: Plane enabled This issue affects: Juniper Networks Junos OS on MX Series with MPC 7/8/9/10/11 cards, when MAP-E IP reassembly is enabled on these cards. 17.2 version 17.2R1 and later versions; 17.3 versions prior to 17.3R3-S9; 17.4 versions prior to 17.4R2-S12, 17.4R3-S3; 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R2-S6, 18.2R3-S3; 18.3 versions prior to 18.3R2-S4, 18.3R3-S1; 18.4 versions prior to 18.4R1-S8, 18.4R2-S5, 18.4R3; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3; 19.2 versions prior to 19.2R1-S5, 19.2R2; 19.3 versions prior to 19.3R2-S5, 19.3R3. This issue does not affect Juniper Networks Junos OS versions prior to 17.2R1."}],"exploits":[{"lang":"en","value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-696","description":"CWE-696 Incorrect Behavior Order","lang":"en","type":"CWE"}]},{"descriptions":[{"description":"Denial of Service (DoS)","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2021-10-19T18:17:19.000Z","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","shortName":"juniper"},"references":[{"tags":["x_refsource_CONFIRM"],"url":"https://kb.juniper.net/JSA11247"},{"tags":["x_refsource_MISC"],"url":"https://www.juniper.net/documentation/en_US/junos/topics/topic-map/map-e-configuring.html"}],"solutions":[{"lang":"en","value":"The following software releases have been updated to resolve this specific issue: 17.3R3-S9, 17.4R2-S12, 17.4R3-S3, 18.1R3-S11, 18.2R2-S6, 18.2R3-S3, 18.3R2-S4, 18.3R3-S1, 18.4R1-S8, 18.4R2-S5, 18.4R3, 19.1R1-S6, 19.1R2-S2, 19.1R3, 19.2R1-S5, 19.2R2, 19.3R2-S5, 19.3R3, 19.4R1, and all subsequent releases."}],"source":{"advisory":"JSA11247","defect":["1468454"],"discovery":"INTERNAL"},"title":"Junos OS: MX Series: MPC 7/8/9/10/11 cards with MAP-E: PFE halts when an attacker sends malformed IPv4 or IPv6 traffic inside the MAP-E tunnel.","workarounds":[{"lang":"en","value":"To work around this issue customers can either:\n\n1. Disable Mapping of Address and port - Encapsulation (MAP-E) as an inline service on MX Series routers that use MPC and MIC interfaces.\n\nor\n\n2. Determine where the MAP-E v4 or v6 reassembly exists, review the following hierarchies and disable the \"v4-reassembly;\" and \"v6-reassembly;\" options where they exist:\n\n  [services softwire softwire-concentrator]\n  [services softwires softwire-types]\n  [security softwires]\n\nand the following syntaxes: \n\n  map-e name {\n      v4-reassembly;      <<<<<  DISABLE the v4-reassembly option.\n      v6-reassembly;      <<<<<  DISABLE the v6-reassembly option.\n  }"}],"x_generator":{"engine":"Vulnogram 0.0.9"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"sirt@juniper.net","DATE_PUBLIC":"2021-10-13T16:00:00.000Z","ID":"CVE-2021-31379","STATE":"PUBLIC","TITLE":"Junos OS: MX Series: MPC 7/8/9/10/11 cards with MAP-E: PFE halts when an attacker sends malformed IPv4 or IPv6 traffic inside the MAP-E tunnel."},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Junos OS","version":{"version_data":[{"platform":"MX Series","version_affected":">=","version_name":"17.2","version_value":"17.2R1"},{"platform":"MX Series","version_affected":"<","version_name":"17.3","version_value":"17.3R3-S9"},{"platform":"MX Series","version_affected":"<","version_name":"17.4","version_value":"17.4R2-S12, 17.4R3-S3"},{"platform":"MX Series","version_affected":"<","version_name":"18.1","version_value":"18.1R3-S11"},{"platform":"MX Series","version_affected":"<","version_name":"18.2","version_value":"18.2R2-S6, 18.2R3-S3"},{"platform":"MX Series","version_affected":"<","version_name":"18.3","version_value":"18.3R2-S4, 18.3R3-S1"},{"platform":"MX Series","version_affected":"<","version_name":"18.4","version_value":"18.4R1-S8, 18.4R2-S5, 18.4R3"},{"platform":"MX Series","version_affected":"<","version_name":"19.1","version_value":"19.1R1-S6, 19.1R2-S2, 19.1R3"},{"platform":"MX Series","version_affected":"<","version_name":"19.2","version_value":"19.2R1-S5, 19.2R2"},{"platform":"MX Series","version_affected":"<","version_name":"19.3","version_value":"19.3R2-S5, 19.3R3"},{"platform":"MX Series","version_affected":"!<","version_value":"17.2R1"}]}}]},"vendor_name":"Juniper Networks"}]}},"configuration":[{"lang":"en","value":"The following minimal configuration is necessary: \n\n  [chassis fpc <fpc-number> pic <pic-number> inline-services bandwidth <bandwidth>]\n  [interfaces <si-interface-name> unit <inside-logical-unit> family inet]\n  [interfaces <si-interface-name> unit <inside-logical-unit> family inet6]\n  [interfaces <si-interface-name> unit <inside-logical-unit> service-domain inside]\n  [interfaces <si-interface-name> unit <outside-logical-unit> family inet]\n  [interfaces <si-interface-name> unit <outside-logical-unit> family inet6]\n  [interfaces <si-interface-name> unit <outside-logical-unit> service-domain outside]\n  [services softwire softwire-concentrator map-e <mape-instance-name> version03]\n  [services softwire softwire-concentrator map-e <mape-instance-name> softwire-address <IPv6-Address>]\n  [services softwire softwire-concentrator map-e <mape-instance-name> ipv4-prefix <IPv4-Prefix> mape-prefix <IPv6-Prefix>]\n  [services softwire softwire-concentrator map-e <mape-instance-name> ea-bits-len <0..48>]\n  [services softwire softwire-concentrator map-e <mape-instance-name> psid-off[set <0..16>]\n  [services softwire softwire-concentrator map-e <mape-instance-name> psid-length <0..16>]\n  [services softwire softwire-concentrator map-e <mape-instance-name> mtu-ipv6 <1280..9192>]\n  [services softwire softwire-concentrator map-e <mape-instance-name> v4-reassembly]\n  [services softwire rule <mape-rule-name> match-direction input term <term-name> then map-e <mape-instance-name>]\n  [services service-set <service-set-name> softwire-rules <mape-rule-name>]\n  [services service-set <service-set-name> next-hop-service inside-service-interface <si-interface-name.inside-logical-unit> outside-service-interface <si-interface-name.outside-logical-unit>]"}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"An Incorrect Behavior Order vulnerability in the MAP-E automatic tunneling mechanism of Juniper Networks Junos OS allows an attacker to send certain malformed IPv4 or IPv6 packets to cause a Denial of Service (DoS) to the PFE on the device which is disabled as a result of the processing of these packets. Continued receipt and processing of these malformed IPv4 or IPv6 packets will create a sustained Denial of Service (DoS) condition. This issue only affects MPC 7/8/9/10/11 cards, when MAP-E IP reassembly is enabled on these cards. An indicator of compromise is the output: FPC [\"FPC ID\" # e.g. \"0\"] PFE #{PFE ID # e.g. \"1\"] : Fabric Disabled Example: FPC 0 PFE #1 : Fabric Disabled when using the command: show chassis fabric fpcs An example of a healthy result of the command use would be: user@device-re1> show chassis fabric fpcs Fabric management FPC state: FPC 0 PFE #0 Plane 0: Plane enabled Plane 1: Plane enabled Plane 2: Plane enabled Plane 3: Plane enabled Plane 4: Plane enabled Plane 5: Plane enabled Plane 6: Plane enabled Plane 7: Plane enabled This issue affects: Juniper Networks Junos OS on MX Series with MPC 7/8/9/10/11 cards, when MAP-E IP reassembly is enabled on these cards. 17.2 version 17.2R1 and later versions; 17.3 versions prior to 17.3R3-S9; 17.4 versions prior to 17.4R2-S12, 17.4R3-S3; 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R2-S6, 18.2R3-S3; 18.3 versions prior to 18.3R2-S4, 18.3R3-S1; 18.4 versions prior to 18.4R1-S8, 18.4R2-S5, 18.4R3; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3; 19.2 versions prior to 19.2R1-S5, 19.2R2; 19.3 versions prior to 19.3R2-S5, 19.3R3. This issue does not affect Juniper Networks Junos OS versions prior to 17.2R1."}]},"exploit":[{"lang":"en","value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"generator":{"engine":"Vulnogram 0.0.9"},"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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-696 Incorrect Behavior Order"}]},{"description":[{"lang":"eng","value":"Denial of Service (DoS)"}]}]},"references":{"reference_data":[{"name":"https://kb.juniper.net/JSA11247","refsource":"CONFIRM","url":"https://kb.juniper.net/JSA11247"},{"name":"https://www.juniper.net/documentation/en_US/junos/topics/topic-map/map-e-configuring.html","refsource":"MISC","url":"https://www.juniper.net/documentation/en_US/junos/topics/topic-map/map-e-configuring.html"}]},"solution":[{"lang":"en","value":"The following software releases have been updated to resolve this specific issue: 17.3R3-S9, 17.4R2-S12, 17.4R3-S3, 18.1R3-S11, 18.2R2-S6, 18.2R3-S3, 18.3R2-S4, 18.3R3-S1, 18.4R1-S8, 18.4R2-S5, 18.4R3, 19.1R1-S6, 19.1R2-S2, 19.1R3, 19.2R1-S5, 19.2R2, 19.3R2-S5, 19.3R3, 19.4R1, and all subsequent releases."}],"source":{"advisory":"JSA11247","defect":["1468454"],"discovery":"INTERNAL"},"work_around":[{"lang":"en","value":"To work around this issue customers can either:\n\n1. Disable Mapping of Address and port - Encapsulation (MAP-E) as an inline service on MX Series routers that use MPC and MIC interfaces.\n\nor\n\n2. Determine where the MAP-E v4 or v6 reassembly exists, review the following hierarchies and disable the \"v4-reassembly;\" and \"v6-reassembly;\" options where they exist:\n\n  [services softwire softwire-concentrator]\n  [services softwires softwire-types]\n  [security softwires]\n\nand the following syntaxes: \n\n  map-e name {\n      v4-reassembly;      <<<<<  DISABLE the v4-reassembly option.\n      v6-reassembly;      <<<<<  DISABLE the v6-reassembly option.\n  }"}]}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-03T22:55:53.818Z"},"title":"CVE Program Container","references":[{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"https://kb.juniper.net/JSA11247"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://www.juniper.net/documentation/en_US/junos/topics/topic-map/map-e-configuring.html"}]}]},"cveMetadata":{"assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","assignerShortName":"juniper","cveId":"CVE-2021-31379","datePublished":"2021-10-19T18:17:19.849Z","dateReserved":"2021-04-15T00:00:00.000Z","dateUpdated":"2024-09-16T22:56:51.495Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"}