CVE-2020-27720

{"containers": {"cna": {"affected": [{"product": "BIG-IP LTM/CGNAT", "vendor": "n/a", "versions": [{"status": "affected", "version": "16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.3, 13.1.0-13.1.3.5"}]}], "descriptions": [{"lang": "en", "value": "On BIG-IP LTM/CGNAT version 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.3, and 13.1.0-13.1.3.5, when processing NAT66 traffic with Port Block Allocation (PBA) mode and SP-DAG enabled, and dag-ipv6-prefix-len configured with a value less than the default of 128, an undisclosed traffic pattern may cause the Traffic Management Microkernel (TMM) to restart."}], "problemTypes": [{"descriptions": [{"description": "DoS", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2020-12-24T15:15:03.000Z", "orgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab", "shortName": "f5"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://support.f5.com/csp/article/K04048104"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "f5sirt@f5.com", "ID": "CVE-2020-27720", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "BIG-IP LTM/CGNAT", "version": {"version_data": [{"version_value": "16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.3, 13.1.0-13.1.3.5"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "On BIG-IP LTM/CGNAT version 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.3, and 13.1.0-13.1.3.5, when processing NAT66 traffic with Port Block Allocation (PBA) mode and SP-DAG enabled, and dag-ipv6-prefix-len configured with a value less than the default of 128, an undisclosed traffic pattern may cause the Traffic Management Microkernel (TMM) to restart."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "DoS"}]}]}, "references": {"reference_data": [{"name": "https://support.f5.com/csp/article/K04048104", "refsource": "MISC", "url": "https://support.f5.com/csp/article/K04048104"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T16:18:45.659Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://support.f5.com/csp/article/K04048104"}]}]}, "cveMetadata": {"assignerOrgId": "9dacffd4-cb11-413f-8451-fbbfd4ddc0ab", "assignerShortName": "f5", "cveId": "CVE-2020-27720", "datePublished": "2020-12-24T15:15:03.000Z", "dateReserved": "2020-10-26T00:00:00.000Z", "dateUpdated": "2024-08-04T16:18:45.659Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "BIG-IP LTM/CGNAT", "vendor": "n/a", "versions": [{"status": "affected", "version": "16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.3, 13.1.0-13.1.3.5"}]}], "source": "f5sirt@f5.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:*", "matchCriteriaId": "C3E1FBE0-03E5-4ED2-B7C3-849449ABDF2C", "versionEndIncluding": "13.1.3", "versionStartIncluding": "13.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:*", "matchCriteriaId": "F08EC455-D129-4B8F-B9D8-4A6E85B37217", "versionEndExcluding": "14.1.3.1", "versionStartIncluding": "14.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:*", "matchCriteriaId": "0993E30D-B0EB-4FC2-955D-2190291E08A7", "versionEndExcluding": "15.1.1", "versionStartIncluding": "15.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:*", "matchCriteriaId": "D951A221-BDA4-4E4D-8DE4-C4270916810A", "versionEndExcluding": "16.0.1", "versionStartIncluding": "16.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "BF552D91-612A-43E1-B2D6-02E2515FEA22", "versionEndIncluding": "13.1.3", "versionStartIncluding": "13.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "B6D8C63D-D669-414C-8AF1-2F3A993D6B75", "versionEndExcluding": "14.1.3.1", "versionStartIncluding": "14.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "FD2B708E-78D3-4016-9176-C364CBE20DA8", "versionEndExcluding": "15.1.1", "versionStartIncluding": "15.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*", "matchCriteriaId": "4F9D19B2-1D89-4917-A82E-289EDE52C68F", "versionEndExcluding": "16.0.1", "versionStartIncluding": "16.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "On BIG-IP LTM/CGNAT version 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.3, and 13.1.0-13.1.3.5, when processing NAT66 traffic with Port Block Allocation (PBA) mode and SP-DAG enabled, and dag-ipv6-prefix-len configured with a value less than the default of 128, an undisclosed traffic pattern may cause the Traffic Management Microkernel (TMM) to restart."}, {"lang": "es", "value": "En BIG-IP LTM/CGNAT versiones 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.3 y 13.1.0-13.1.3.5, cuando se procesa el tr\u00e1fico NAT66 con Port Block Allocation (PBA) y SP-DAG habilitado, y dag-ipv6-prefix-len configurado con un valor menor que el predeterminado de 128, un patr\u00f3n de tr\u00e1fico no revelado puede causar que el Traffic Management Microkernel (TMM) se reinicie"}], "id": "CVE-2020-27720", "lastModified": "2026-06-17T03:09:31.297", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-12-24T16:15:15.087", "references": [{"source": "f5sirt@f5.com", "tags": ["Vendor Advisory"], "url": "https://support.f5.com/csp/article/K04048104"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://support.f5.com/csp/article/K04048104"}], "sourceIdentifier": "f5sirt@f5.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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