{"containers": {"cna": {"affected": [{"product": "kernel", "vendor": "Linux Kernel", "versions": [{"status": "affected", "version": "5.5"}]}], "descriptions": [{"lang": "en", "value": "A flaw was found in the Linux kernel's implementation of some networking protocols in IPsec, such as VXLAN and GENEVE tunnels over IPv6. When an encrypted tunnel is created between two hosts, the kernel isn't correctly routing tunneled data over the encrypted link; rather sending the data unencrypted. This would allow anyone in between the two endpoints to read the traffic unencrypted. The main threat from this vulnerability is to data confidentiality."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-319", "description": "CWE-319", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2020-12-22T07:06:22.000Z", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1749"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://security.netapp.com/advisory/ntap-20201222-0001/"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "secalert@redhat.com", "ID": "CVE-2020-1749", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "kernel", "version": {"version_data": [{"version_value": "5.5"}]}}]}, "vendor_name": "Linux Kernel"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A flaw was found in the Linux kernel's implementation of some networking protocols in IPsec, such as VXLAN and GENEVE tunnels over IPv6. When an encrypted tunnel is created between two hosts, the kernel isn't correctly routing tunneled data over the encrypted link; rather sending the data unencrypted. This would allow anyone in between the two endpoints to read the traffic unencrypted. The main threat from this vulnerability is to data confidentiality."}]}, "impact": {"cvss": [[{"vectorString": "7.5/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.0"}]]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-319"}]}]}, "references": {"reference_data": [{"name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1749", "refsource": "CONFIRM", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1749"}, {"name": "https://security.netapp.com/advisory/ntap-20201222-0001/", "refsource": "CONFIRM", "url": "https://security.netapp.com/advisory/ntap-20201222-0001/"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T06:46:30.814Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1749"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://security.netapp.com/advisory/ntap-20201222-0001/"}]}]}, "cveMetadata": {"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2020-1749", "datePublished": "2020-09-09T14:35:17.000Z", "dateReserved": "2019-11-27T00:00:00.000Z", "dateUpdated": "2024-08-04T06:46:30.814Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*", "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*", "matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:*", "matchCriteriaId": "C60FA8B1-1802-4522-A088-22171DCF7A93", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "A flaw was found in the Linux kernel's implementation of some networking protocols in IPsec, such as VXLAN and GENEVE tunnels over IPv6. When an encrypted tunnel is created between two hosts, the kernel isn't correctly routing tunneled data over the encrypted link; rather sending the data unencrypted. This would allow anyone in between the two endpoints to read the traffic unencrypted. The main threat from this vulnerability is to data confidentiality."}, {"lang": "es", "value": "Se encontr\u00f3 un fallo en una implementaci\u00f3n del kernel de Linux de algunos protocolos de red en IPsec, como los t\u00faneles VXLAN y GENEVE sobre IPv6. Cuando es creado un t\u00fanel cifrado entre dos hosts, el kernel no enruta correctamente los datos en el t\u00fanel por medio del enlace cifrado; en lugar de enviar los datos sin cifrar. Esto permitir\u00eda a cualquiera que se encuentre entre los dos endpoints leer el tr\u00e1fico sin cifrar. La principal amenaza de esta vulnerabilidad es la confidencialidad de los datos."}], "id": "CVE-2020-1749", "lastModified": "2024-11-21T05:11:18.210", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "secalert@redhat.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-09-09T15:15:10.300", "references": [{"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1749"}, {"source": "secalert@redhat.com", "url": "https://security.netapp.com/advisory/ntap-20201222-0001/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1749"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.netapp.com/advisory/ntap-20201222-0001/"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-319"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-319"}], "source": "nvd@nist.gov", "type": "Secondary"}]}

{"acknowledgement": "This issue was discovered by Xiumei Mu (Red Hat QE Engineering).", "affected_release": [{"advisory": "RHSA-2020:4062", "cpe": "cpe:/a:redhat:rhel_extras_rt:7", "package": "kernel-rt-0:3.10.0-1160.rt56.1131.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-09-29T00:00:00Z"}, {"advisory": "RHSA-2020:4060", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "kernel-0:3.10.0-1160.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-09-29T00:00:00Z"}, {"advisory": "RHSA-2021:0354", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "kernel-alt-0:4.14.0-115.35.1.el7a", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-02-02T00:00:00Z"}, {"advisory": "RHSA-2020:1567", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-193.rt13.51.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-04-28T00:00:00Z"}, {"advisory": "RHSA-2020:1769", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-193.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-04-28T00:00:00Z"}], "bugzilla": {"description": "kernel: some ipv6 protocols not encrypted over ipsec tunnel", "id": "1809833", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1809833"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "status": "verified"}, "cwe": "CWE-319", "details": ["A flaw was found in the Linux kernel's implementation of some networking protocols in IPsec, such as VXLAN and GENEVE tunnels over IPv6. When an encrypted tunnel is created between two hosts, the kernel isn't correctly routing tunneled data over the encrypted link; rather sending the data unencrypted. This would allow anyone in between the two endpoints to read the traffic unencrypted. The main threat from this vulnerability is to data confidentiality.", "A flaw was found in the Linux kernel's implementation of some networking protocols in IPsec, such as VXLAN and GENEVE tunnels over IPv6. When an encrypted tunnel is created between two hosts, the kernel isn't correctly routing tunneled data over the encrypted link; rather sending the data unencrypted. This would allow anyone in between the two endpoints to read the traffic unencrypted. The main threat from this vulnerability is to data confidentiality."], "mitigation": {"lang": "en:us", "value": "Disabling the IPV6 protocol may be a suitable workaround for systems that do not require the protocol to function correctly, however, if IPV6 is not in use this flaw will not be triggered."}, "name": "CVE-2020-1749", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2020-03-04T01:29:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-1749\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-1749"], "threat_severity": "Moderate"}

{}