{ "containers": { "cna": { "affected": [ { "product": "Junos OS", "vendor": "Juniper Networks", "versions": [ { "lessThan": "18.2R3-S8", "status": "affected", "version": "unspecified", "versionType": "custom" }, { "lessThan": "18.3R3-S5", "status": "affected", "version": "18.3", "versionType": "custom" }, { "lessThan": "18.4R3-S9", "status": "affected", "version": "18.4", "versionType": "custom" }, { "lessThan": "19.1R3-S7", "status": "affected", "version": "19.1", "versionType": "custom" }, { "lessThan": "19.2R1-S7, 19.2R3-S3", "status": "affected", "version": "19.2", "versionType": "custom" }, { "lessThan": "19.3R2-S6, 19.3R3-S2", "status": "affected", "version": "19.3", "versionType": "custom" }, { "lessThan": "19.4R3-S3", "status": "affected", "version": "19.4", "versionType": "custom" }, { "lessThan": "20.1R3", "status": "affected", "version": "20.1", "versionType": "custom" }, { "lessThan": "20.2R3", "status": "affected", "version": "20.2", "versionType": "custom" }, { "lessThan": "20.3R3", "status": "affected", "version": "20.3", "versionType": "custom" }, { "lessThan": "20.4R2", "status": "affected", "version": "20.4", "versionType": "custom" } ] }, { "product": "Junos OS Evolved", "vendor": "Juniper Networks", "versions": [ { "lessThan": "20.4R2-EVO", "status": "affected", "version": "unspecified", "versionType": "custom" }, { "lessThan": "21.1R2-EVO", "status": "affected", "version": "21.1", "versionType": "custom" } ] } ], "configurations": [ { "lang": "en", "value": "[ protocols isis interface ]" } ], "datePublic": "2021-10-13T00:00:00.000Z", "descriptions": [ { "lang": "en", "value": "A Protection Mechanism Failure vulnerability in RPD (routing protocol daemon) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause established IS-IS adjacencies to go down by sending a spoofed hello PDU leading to a Denial of Service (DoS) condition. Continued receipted of these spoofed PDUs will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS All versions prior to 18.2R3-S8; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S7; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R3-S3; 20.1 versions prior to 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R3; 20.4 versions prior to 20.4R2. Juniper Networks Junos OS Evolved All versions prior to 20.4R2-EVO; 21.1 versions prior to 21.1R2-EVO." } ], "exploits": [ { "lang": "en", "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability." } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-693", "description": "CWE-693 Protection Mechanism Failure", "lang": "en", "type": "CWE" } ] }, { "descriptions": [ { "description": "Denial of Service (DoS)", "lang": "en", "type": "text" } ] } ], "providerMetadata": { "dateUpdated": "2021-10-19T18:16:48.000Z", "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "shortName": "juniper" }, "references": [ { "tags": [ "x_refsource_CONFIRM" ], "url": "https://kb.juniper.net/JSA11224" } ], "solutions": [ { "lang": "en", "value": "The following software releases have been updated to resolve this specific issue in JUNOS OS: 18.2R3-S8, 18.3R3-S5, 18.4R3-S9, 19.1R3-S7, 19.2R1-S7, 19.2R3-S3, 19.3R2-S6, 19.3R3-S2, 19.4R3-S3, 20.1R3, 20.2R3, 20.3R3, 20.4R2, 21.1R1, and all subsequent releases.\nThe following software releases have been updated to resolve this specific issue in JUNOS OS Evolved: 20.4R2-EVO, 21.1R2-EVO, 21.2R1-EVO, and all subsequent releases." } ], "source": { "advisory": "JSA11224", "defect": [ "1556575" ], "discovery": "USER" }, "title": "Junos OS and Junos OS Evolved: An IS-IS adjacency might be taken down if a bad hello PDU is received for an existing adjacency causing a DoS", "workarounds": [ { "lang": "en", "value": "There are no viable workarounds for this issue." } ], "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-2021-31362", "STATE": "PUBLIC", "TITLE": "Junos OS and Junos OS Evolved: An IS-IS adjacency might be taken down if a bad hello PDU is received for an existing adjacency causing a DoS" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Junos OS", "version": { "version_data": [ { "version_affected": "<", "version_value": "18.2R3-S8" }, { "version_affected": "<", "version_name": "18.3", "version_value": "18.3R3-S5" }, { "version_affected": "<", "version_name": "18.4", "version_value": "18.4R3-S9" }, { "version_affected": "<", "version_name": "19.1", "version_value": "19.1R3-S7" }, { "version_affected": "<", "version_name": "19.2", "version_value": "19.2R1-S7, 19.2R3-S3" }, { "version_affected": "<", "version_name": "19.3", "version_value": "19.3R2-S6, 19.3R3-S2" }, { "version_affected": "<", "version_name": "19.4", "version_value": "19.4R3-S3" }, { "version_affected": "<", "version_name": "20.1", "version_value": "20.1R3" }, { "version_affected": "<", "version_name": "20.2", "version_value": "20.2R3" }, { "version_affected": "<", "version_name": "20.3", "version_value": "20.3R3" }, { "version_affected": "<", "version_name": "20.4", "version_value": "20.4R2" } ] } }, { "product_name": "Junos OS Evolved", "version": { "version_data": [ { "version_affected": "<", "version_value": "20.4R2-EVO" }, { "version_affected": "<", "version_name": "21.1", "version_value": "21.1R2-EVO" } ] } } ] }, "vendor_name": "Juniper Networks" } ] } }, "configuration": [ { "lang": "en", "value": "[ protocols isis interface ]" } ], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "A Protection Mechanism Failure vulnerability in RPD (routing protocol daemon) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause established IS-IS adjacencies to go down by sending a spoofed hello PDU leading to a Denial of Service (DoS) condition. Continued receipted of these spoofed PDUs will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS All versions prior to 18.2R3-S8; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S7; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R3-S3; 20.1 versions prior to 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R3; 20.4 versions prior to 20.4R2. Juniper Networks Junos OS Evolved All versions prior to 20.4R2-EVO; 21.1 versions prior to 21.1R2-EVO." } ] }, "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": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/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-693 Protection Mechanism Failure" } ] }, { "description": [ { "lang": "eng", "value": "Denial of Service (DoS)" } ] } ] }, "references": { "reference_data": [ { "name": "https://kb.juniper.net/JSA11224", "refsource": "CONFIRM", "url": "https://kb.juniper.net/JSA11224" } ] }, "solution": [ { "lang": "en", "value": "The following software releases have been updated to resolve this specific issue in JUNOS OS: 18.2R3-S8, 18.3R3-S5, 18.4R3-S9, 19.1R3-S7, 19.2R1-S7, 19.2R3-S3, 19.3R2-S6, 19.3R3-S2, 19.4R3-S3, 20.1R3, 20.2R3, 20.3R3, 20.4R2, 21.1R1, and all subsequent releases.\nThe following software releases have been updated to resolve this specific issue in JUNOS OS Evolved: 20.4R2-EVO, 21.1R2-EVO, 21.2R1-EVO, and all subsequent releases." } ], "source": { "advisory": "JSA11224", "defect": [ "1556575" ], "discovery": "USER" }, "work_around": [ { "lang": "en", "value": "There are no viable workarounds for this issue." } ] } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T22:55:53.714Z" }, "title": "CVE Program Container", "references": [ { "tags": [ "x_refsource_CONFIRM", "x_transferred" ], "url": "https://kb.juniper.net/JSA11224" } ] } ] }, "cveMetadata": { "assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "assignerShortName": "juniper", "cveId": "CVE-2021-31362", "datePublished": "2021-10-19T18:16:49.024Z", "dateReserved": "2021-04-15T00:00:00.000Z", "dateUpdated": "2024-09-17T00:15:47.397Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }