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"8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2020-25211", "datePublished": "2020-09-09T15:51:41.000Z", "dateReserved": "2020-09-09T00:00:00.000Z", "dateUpdated": "2024-08-04T15:33:05.142Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B6CF1CDD-CE9F-4E08-A18C-F81E9A62F6E2", "versionEndIncluding": "5.8.7", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252", "vulnerable": true}, {"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*", "matchCriteriaId": "80F0FA5D-8D3B-4C0E-81E2-87998286AF33", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*", "matchCriteriaId": "36D96259-24BD-44E2-96D9-78CE1D41F956", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel through 5.8.7, local attackers able to inject conntrack netlink configuration could overflow a local buffer, causing crashes or triggering use of incorrect protocol numbers in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c, aka CID-1cc5ef91d2ff."}, {"lang": "es", "value": "En el kernel de Linux versiones hasta 5.8.7, los atacantes locales capaces de inyectar la configuraci\u00f3n netlink de conntrack podr\u00edan desbordar un b\u00fafer local, causando bloqueos o desencadenando el uso de n\u00fameros de protocolo incorrectos en la funci\u00f3n ctnetlink_parse_tuple_filter en el archivo net/netfilter/nf_conntrack_netlink.c, tambi\u00e9n se conoce como CID-1cc5ef91d2ff."}], "id": "CVE-2020-25211", "lastModified": "2024-11-21T05:17:39.757", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 3.6, "confidentialityImpact": "NONE", "integrityImpact": 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"https://security.netapp.com/advisory/ntap-20201009-0001/"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://twitter.com/grsecurity/status/1303646421158109185"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2020/dsa-4774"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Mailing List", "Patch", "Vendor Advisory"], "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1cc5ef91d2ff94d2bf2de3b3585423e8a1051cb6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00028.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third 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"weaknesses": [{"description": [{"lang": "en", "value": "CWE-120"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Will McVicker (Google) for reporting this issue.", "affected_release": [{"advisory": "RHSA-2021:0857", "cpe": "cpe:/a:redhat:rhel_extras_rt:7", "impact": "moderate", "package": "kernel-rt-0:3.10.0-1160.21.1.rt56.1158.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-03-16T00:00:00Z"}, {"advisory": "RHSA-2021:0856", "cpe": "cpe:/o:redhat:enterprise_linux:7", "impact": "moderate", "package": "kernel-0:3.10.0-1160.21.1.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-03-16T00:00:00Z"}, {"advisory": "RHSA-2021:2164", "cpe": "cpe:/o:redhat:rhel_aus:7.4", "package": "kernel-0:3.10.0-693.87.1.el7", "product_name": "Red Hat Enterprise Linux 7.4 Advanced Update Support", "release_date": "2021-06-01T00:00:00Z"}, {"advisory": "RHSA-2021:2164", "cpe": "cpe:/o:redhat:rhel_tus:7.4", "package": "kernel-0:3.10.0-693.87.1.el7", "product_name": "Red Hat Enterprise Linux 7.4 Telco Extended Update Support", "release_date": "2021-06-01T00:00:00Z"}, {"advisory": "RHSA-2021:2164", "cpe": "cpe:/o:redhat:rhel_e4s:7.4", "package": "kernel-0:3.10.0-693.87.1.el7", "product_name": "Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions", "release_date": "2021-06-01T00:00:00Z"}, {"advisory": "RHSA-2021:2355", "cpe": "cpe:/o:redhat:rhel_aus:7.6", "package": "kernel-0:3.10.0-957.76.1.el7", "product_name": "Red Hat Enterprise Linux 7.6 Advanced Update Support(Disable again in 2026 - SPRHEL-7118)", "release_date": "2021-06-09T00:00:00Z"}, {"advisory": "RHSA-2021:2355", "cpe": "cpe:/o:redhat:rhel_tus:7.6", "package": "kernel-0:3.10.0-957.76.1.el7", "product_name": "Red Hat Enterprise Linux 7.6 Telco Extended Update Support", "release_date": "2021-06-09T00:00:00Z"}, {"advisory": "RHSA-2021:2355", "cpe": "cpe:/o:redhat:rhel_e4s:7.6", "package": "kernel-0:3.10.0-957.76.1.el7", "product_name": "Red Hat Enterprise Linux 7.6 Update Services for SAP Solutions", "release_date": "2021-06-09T00:00:00Z"}, {"advisory": "RHSA-2021:1531", "cpe": "cpe:/o:redhat:rhel_eus:7.7", "package": "kernel-0:3.10.0-1062.49.1.el7", "product_name": "Red Hat Enterprise Linux 7.7 Extended Update Support", "release_date": "2021-05-11T00:00:00Z"}, {"advisory": "RHSA-2021:0004", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-240.10.1.rt7.64.el8_3", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-01-04T00:00:00Z"}, {"advisory": "RHSA-2021:0003", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-240.10.1.el8_3", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-01-04T00:00:00Z"}, {"advisory": "RHSA-2021:0184", "cpe": "cpe:/o:redhat:rhel_eus:8.1", "package": "kernel-0:4.18.0-147.38.1.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-01-19T00:00:00Z"}, {"advisory": "RHSA-2021:0189", "cpe": "cpe:/o:redhat:rhel_eus:8.1", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-01-19T00:00:00Z"}, {"advisory": "RHSA-2021:0774", "cpe": "cpe:/a:redhat:rhel_eus:8.2::nfv", "package": "kernel-rt-0:4.18.0-193.46.1.rt13.96.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-03-09T00:00:00Z"}, {"advisory": "RHSA-2021:0763", "cpe": "cpe:/o:redhat:rhel_eus:8.2", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-03-09T00:00:00Z"}, {"advisory": "RHSA-2021:0765", "cpe": "cpe:/o:redhat:rhel_eus:8.2", "package": "kernel-0:4.18.0-193.46.1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-03-09T00:00:00Z"}], "bugzilla": {"description": "kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c", "id": "1877571", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1877571"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-119", "details": ["In the Linux kernel through 5.8.7, local attackers able to inject conntrack netlink configuration could overflow a local buffer, causing crashes or triggering use of incorrect protocol numbers in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c, aka CID-1cc5ef91d2ff.", "A flaw was found in the Linux kernel. A local attacker, able to inject conntrack netlink configuration, could overflow a local buffer causing crashes or triggering the use of incorrect protocol numbers in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, prevent module nf_conntrack_netlink from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.\nAlternatively, if nf_conntrack_netlink is being used, on Red Hat Enterprise Linux 8, you can disable unprivileged user namespaces by setting user.max_user_namespaces to 0:\n# echo \"user.max_user_namespaces=0\" > /etc/sysctl.d/userns.conf\n# sysctl -p /etc/sysctl.d/userns.conf"}, "name": "CVE-2020-25211", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Out of support scope", "impact": "moderate", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "impact": "moderate", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "impact": "moderate", "package_name": "kernel-alt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Out of support scope", "impact": "moderate", "package_name": "kernel", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2020-09-09T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-25211\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-25211\nhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1cc5ef91d2ff94d2bf2de3b3585423e8a1051cb6"], "statement": "This flaw is rated as having Moderate impact (Red Hat Enterprise Linux 7 and lower) because of the need to have CAP_NET_ADMIN privileges.\nThis flaw is rated as having Important (Red Hat Enterprise Linux 8) impact because of the need to have CAP_NET_ADMIN privileges. Red Hat Enterprise Linux 8 enabled unprivileged user/network namespaces by default which can be used to exercise this vulnerability.", "threat_severity": "Important"}

{}