{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-31248", "assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc", "state": "PUBLISHED", "assignerShortName": "canonical", "dateReserved": "2023-06-29T21:43:35.029Z", "datePublished": "2023-07-05T18:33:59.665Z", "dateUpdated": "2024-08-02T14:53:31.000Z"}, "containers": {"cna": {"title": "Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability", "affected": [{"platforms": ["Linux"], "product": "Linux Kernel", "vendor": "Linux", "versions": [{"status": "affected", "version": "v5.9-rc1"}]}], "datePublic": "2023-07-05T12:12:00.000Z", "descriptions": [{"lang": "en", "value": "Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability; `nft_chain_lookup_byid()` failed to check whether a chain was active and CAP_NET_ADMIN is in any user or network namespace"}], "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-416", "description": "CWE-416", "lang": "en", "type": "CWE"}]}], "references": [{"tags": ["issue-tracking"], "url": "https://lore.kernel.org/netfilter-devel/20230705121627.GC19489@breakpoint.cc/T/"}, {"tags": ["mailing-list"], "url": "https://www.openwall.com/lists/oss-security/2023/07/05/2"}, {"url": "http://www.openwall.com/lists/oss-security/2023/07/05/2"}, {"url": "https://www.debian.org/security/2023/dsa-5453"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UPHI46ROSSLVAV4R5LJWJYU747JGOS6D/"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGZC5XOANA75OJ4XARBBXYSLDKUIJI5E/"}, {"url": "http://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html"}, {"url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00001.html"}, {"url": "http://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSN-0097-1.html"}, {"url": "https://security.netapp.com/advisory/ntap-20240201-0001/"}], "credits": [{"type": "finder", "lang": "en", "value": "Mingi Cho"}], "providerMetadata": {"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc", "shortName": "canonical", "dateUpdated": "2023-07-05T18:33:59.665Z"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T14:53:31.000Z"}, "title": "CVE Program Container", "references": [{"tags": ["issue-tracking", "x_transferred"], "url": "https://lore.kernel.org/netfilter-devel/20230705121627.GC19489@breakpoint.cc/T/"}, {"tags": ["mailing-list", "x_transferred"], "url": "https://www.openwall.com/lists/oss-security/2023/07/05/2"}, {"url": "http://www.openwall.com/lists/oss-security/2023/07/05/2", "tags": ["x_transferred"]}, {"url": "https://www.debian.org/security/2023/dsa-5453", "tags": ["x_transferred"]}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UPHI46ROSSLVAV4R5LJWJYU747JGOS6D/", "tags": ["x_transferred"]}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGZC5XOANA75OJ4XARBBXYSLDKUIJI5E/", "tags": ["x_transferred"]}, {"url": "http://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html", "tags": ["x_transferred"]}, {"url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00001.html", "tags": ["x_transferred"]}, {"url": "http://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSN-0097-1.html", "tags": ["x_transferred"]}, {"url": "https://security.netapp.com/advisory/ntap-20240201-0001/", "tags": ["x_transferred"]}]}]}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D00465E7-4C90-4F70-BFB1-A877E520AD2B", "versionEndExcluding": "5.10.188", "versionStartIncluding": "5.9", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "EC77775B-EC31-4966-966C-1286C02B2A85", "versionEndExcluding": "5.15.121", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "9BD1D4A1-304D-4187-8178-6D7C0050B1AF", "versionEndExcluding": "6.1.39", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A91BC267-63EE-413E-A6EF-6B96C2A278D1", "versionEndExcluding": "6.4.4", "versionStartIncluding": "6.2", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*", "matchCriteriaId": "E30D0E6F-4AE8-4284-8716-991DFA48CC5D", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*", "matchCriteriaId": "CC559B26-5DFC-4B7A-A27C-B77DE755DFF9", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*", "matchCriteriaId": "815D70A8-47D3-459C-A32C-9FEACA0659D1", "vulnerable": true}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*", "matchCriteriaId": "7A5301BF-1402-4BE0-A0F8-69FBE79BC6D6", "vulnerable": true}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D", "vulnerable": true}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*", "matchCriteriaId": "902B8056-9E37-443B-8905-8AA93E2447FB", "vulnerable": true}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:*", "matchCriteriaId": "359012F1-2C63-415A-88B8-6726A87830DE", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability; `nft_chain_lookup_byid()` failed to check whether a chain was active and CAP_NET_ADMIN is in any user or network namespace"}, {"lang": "es", "value": "Vulnerabilidad de Escalada de Privilegios Locales de Use-After-Free de Linux nftables; 'nft_chain_lookup_byid()' no pudo comprobar si una cadena estaba activa y CAP_NET_ADMIN est\u00e1 en cualquier espacio de nombres de usuario o red\n"}], "id": "CVE-2023-31248", "lastModified": "2024-02-01T17:15:08.327", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "security@ubuntu.com", "type": "Secondary"}]}, "published": "2023-07-05T19:15:09.713", "references": [{"source": "security@ubuntu.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html"}, {"source": "security@ubuntu.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSN-0097-1.html"}, {"source": "security@ubuntu.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2023/07/05/2"}, {"source": "security@ubuntu.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00001.html"}, {"source": "security@ubuntu.com", "tags": ["Mailing List"], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGZC5XOANA75OJ4XARBBXYSLDKUIJI5E/"}, {"source": "security@ubuntu.com", "tags": ["Mailing List"], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UPHI46ROSSLVAV4R5LJWJYU747JGOS6D/"}, {"source": "security@ubuntu.com", "tags": ["Patch"], "url": "https://lore.kernel.org/netfilter-devel/20230705121627.GC19489@breakpoint.cc/T/"}, {"source": "security@ubuntu.com", "url": "https://security.netapp.com/advisory/ntap-20240201-0001/"}, {"source": "security@ubuntu.com", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2023/dsa-5453"}, {"source": "security@ubuntu.com", "tags": ["Mailing List"], "url": "https://www.openwall.com/lists/oss-security/2023/07/05/2"}], "sourceIdentifier": "security@ubuntu.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-416"}], "source": "security@ubuntu.com", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2023:5069", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-284.30.1.el9_2", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-09-12T00:00:00Z"}, {"advisory": "RHSA-2023:5091", "cpe": "cpe:/a:redhat:enterprise_linux:9::nfv", "package": "kernel-rt-0:5.14.0-284.30.1.rt14.315.el9_2", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-09-12T00:00:00Z"}, {"advisory": "RHSA-2023:5069", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-284.30.1.el9_2", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-09-12T00:00:00Z"}, {"advisory": "RHSA-2023:5093", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-09-12T00:00:00Z"}, {"advisory": "RHSA-2023:5604", "cpe": "cpe:/a:redhat:rhel_eus:9.0", "package": "kernel-0:5.14.0-70.75.1.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2023-10-10T00:00:00Z"}, {"advisory": "RHSA-2023:5603", "cpe": "cpe:/a:redhat:rhel_eus:9.0::nfv", "package": "kernel-rt-0:5.14.0-70.75.1.rt21.146.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2023-10-10T00:00:00Z"}, {"advisory": "RHSA-2023:5575", "cpe": "cpe:/o:redhat:rhel_eus:9.0", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2023-10-10T00:00:00Z"}], "bugzilla": {"description": "kernel: nf_tables: use-after-free in nft_chain_lookup_byid()", "id": "2220893", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2220893"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-416", "details": ["Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability; `nft_chain_lookup_byid()` failed to check whether a chain was active and CAP_NET_ADMIN is in any user or network namespace", "A use-after-free flaw was found in the Linux kernel's Netfilter module in net/netfilter/nf_tables_api.c in nft_chain_lookup_byid. This flaw allows a local attacker to cause a local privilege escalation issue due to a missing cleanup."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, it is possible to prevent the affected code from being loaded by blacklisting the kernel netfilter module. \nFor instructions relating to how to blacklist a kernel module refer to: https://access.redhat.com/solutions/41278"}, "name": "CVE-2023-31248", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}], "public_date": "2023-07-05T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-31248\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-31248\nhttps://lore.kernel.org/netfilter-devel/20230705121627.GC19489@breakpoint.cc/T/\nhttps://www.openwall.com/lists/oss-security/2023/07/05/2\nhttps://www.zerodayinitiative.com/advisories/ZDI-23-899/"], "statement": "Exploiting this flaw will require the CAP_NET_ADMIN access privilege in any user or network namespace.", "threat_severity": "Important"}