{ "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 pic inline-services bandwidth ]\n [interfaces unit family inet]\n [interfaces unit family inet6]\n [interfaces unit service-domain inside]\n [interfaces unit family inet]\n [interfaces unit family inet6]\n [interfaces unit service-domain outside]\n [services softwire softwire-concentrator map-e version03]\n [services softwire softwire-concentrator map-e softwire-address ]\n [services softwire softwire-concentrator map-e ipv4-prefix mape-prefix ]\n [services softwire softwire-concentrator map-e ea-bits-len <0..48>]\n [services softwire softwire-concentrator map-e psid-off[set <0..16>]\n [services softwire softwire-concentrator map-e psid-length <0..16>]\n [services softwire softwire-concentrator map-e mtu-ipv6 <1280..9192>]\n [services softwire softwire-concentrator map-e v4-reassembly]\n [services softwire rule match-direction input term then map-e ]\n [services service-set softwire-rules ]\n [services service-set next-hop-service inside-service-interface outside-service-interface ]" } ], "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 pic inline-services bandwidth ]\n [interfaces unit family inet]\n [interfaces unit family inet6]\n [interfaces unit service-domain inside]\n [interfaces unit family inet]\n [interfaces unit family inet6]\n [interfaces unit service-domain outside]\n [services softwire softwire-concentrator map-e version03]\n [services softwire softwire-concentrator map-e softwire-address ]\n [services softwire softwire-concentrator map-e ipv4-prefix mape-prefix ]\n [services softwire softwire-concentrator map-e ea-bits-len <0..48>]\n [services softwire softwire-concentrator map-e psid-off[set <0..16>]\n [services softwire softwire-concentrator map-e psid-length <0..16>]\n [services softwire softwire-concentrator map-e mtu-ipv6 <1280..9192>]\n [services softwire softwire-concentrator map-e v4-reassembly]\n [services softwire rule match-direction input term then map-e ]\n [services service-set softwire-rules ]\n [services service-set next-hop-service inside-service-interface outside-service-interface ]" } ], "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" }