CVE-2023-6817

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{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageName": "kernel", "product": "Kernel", "repo": "https://git.kernel.org", "vendor": "Linux", "versions": [{"lessThan": "6.7", "status": "affected", "version": "5.6", "versionType": "custom"}]}], "source": "cve-coordination@google.com"}, {"affectedData": [{"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "vendor": "Siemens", "versions": [{"lessThan": "V3.1.5", "status": "affected", "version": "V3.1.0", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "vendor": "Siemens", "versions": [{"lessThan": "V3.1.5", "status": "affected", "version": "V3.1.0", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "vendor": "Siemens", "versions": [{"lessThan": "V3.1.5", "status": "affected", "version": "V3.1.0", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "vendor": "Siemens", "versions": [{"lessThan": "V3.1.5", "status": "affected", "version": "V3.1.0", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem", "vendor": "Siemens", "versions": [{"lessThan": "V1.1.1", "status": "affected", "version": "0", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP", "vendor": "Siemens", "versions": [{"lessThan": "V3.1.5", "status": "affected", "version": "V3.1.0", "versionType": "custom"}]}], "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BC30ED73-012F-4A4F-8B31-553F3A6D05BB", "versionEndExcluding": "5.10.204", "versionStartIncluding": "5.6", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B9718AD7-A70A-4A63-90EE-B47010C352E3", "versionEndExcluding": "5.15.143", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D73554E0-C1EE-48CC-9FDB-4B66000FEB58", "versionEndExcluding": "6.1.68", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "38CB764D-606E-4695-8437-DD35E0B1A6FC", "versionEndExcluding": "6.6.7", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.7:rc1:*:*:*:*:*:*", "matchCriteriaId": "3A0038DE-E183-4958-A6E3-CE3821FEAFBF", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.7:rc2:*:*:*:*:*:*", "matchCriteriaId": "E31AD4FC-436C-44AB-BCAB-3A0B37F69EE0", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.7:rc3:*:*:*:*:*:*", "matchCriteriaId": "C56C6E04-4F04-44A3-8DB8-93899903CFCF", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.7:rc4:*:*:*:*:*:*", "matchCriteriaId": "5C78EDA4-8BE6-42FC-9512-49032D525A55", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.\n\nThe function nft_pipapo_walk did not skip inactive elements during set walk which could lead double deactivations of PIPAPO (Pile Packet Policies) elements, leading to use-after-free.\n\nWe recommend upgrading past commit 317eb9685095678f2c9f5a8189de698c5354316a."}, {"lang": "es", "value": "Una vulnerabilidad de use after free en el componente netfilter: nf_tables del kernel de Linux puede explotarse para lograr una escalada de privilegios local. La funci\u00f3n nft_pipapo_walk no omiti\u00f3 elementos inactivos durante el recorrido establecido, lo que podr\u00eda provocar desactivaciones dobles de elementos PIPAPO (Pol\u00edticas de paquetes de pila), lo que llevar\u00eda a un use-after-free. Recomendamos actualizar despu\u00e9s del commit 317eb9685095678f2c9f5a8189de698c5354316a."}], "id": "CVE-2023-6817", "lastModified": "2026-10-14T23:17:20.033", "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": "cve-coordination@google.com", "type": "Secondary"}, {"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"}]}, "published": "2023-12-18T15:15:10.210", "references": [{"source": "cve-coordination@google.com", "url": "http://packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security-Notice-LSN-0100-1.html"}, {"source": "cve-coordination@google.com", "url": "http://www.openwall.com/lists/oss-security/2023/12/22/13"}, {"source": "cve-coordination@google.com", "url": "http://www.openwall.com/lists/oss-security/2023/12/22/6"}, {"source": "cve-coordination@google.com", "tags": ["Mailing List", "Patch"], "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=317eb9685095678f2c9f5a8189de698c5354316a"}, {"source": "cve-coordination@google.com", "tags": ["Patch"], "url": "https://kernel.dance/317eb9685095678f2c9f5a8189de698c5354316a"}, {"source": "cve-coordination@google.com", "url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security-Notice-LSN-0100-1.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2023/12/22/13"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2023/12/22/6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch"], "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=317eb9685095678f2c9f5a8189de698c5354316a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://kernel.dance/317eb9685095678f2c9f5a8189de698c5354316a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"}], "sourceIdentifier": "cve-coordination@google.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "cve-coordination@google.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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{"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/elasticsearch6-rhel9:v6.8.1-407", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/elasticsearch-operator-bundle:v5.8.6-19", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/elasticsearch-proxy-rhel9:v1.0.0-479", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/elasticsearch-rhel9-operator:v5.8.6-7", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/eventrouter-rhel9:v0.4.0-247", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/fluentd-rhel9:v5.8.6-5", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/log-file-metric-exporter-rhel9:v1.1.0-227", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/logging-curator5-rhel9:v5.8.1-470", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/logging-loki-rhel9:v2.9.6-14", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/logging-view-plugin-rhel9:v5.8.6-2", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/loki-operator-bundle:v5.8.6-24", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/loki-rhel9-operator:v5.8.6-10", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/lokistack-gateway-rhel9:v0.1.0-525", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/opa-openshift-rhel9:v0.1.0-224", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/vector-rhel9:v0.28.1-56", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}], "bugzilla": {"description": "kernel: inactive elements in nft_pipapo_walk", "id": "2255139", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2255139"}, "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": ["A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.\nThe function nft_pipapo_walk did not skip inactive elements during set walk which could lead double deactivations of PIPAPO (Pile Packet Policies) elements, leading to use-after-free.\nWe recommend upgrading past commit 317eb9685095678f2c9f5a8189de698c5354316a.", "A use-after-free flaw was found in the Netfilter subsystem in the Linux kernel via the nft_pipapo_walk function. This issue may allow a local user with CAP_NET_ADMIN capability to trigger an application crash, information disclosure, or local privilege escalation."], "mitigation": {"lang": "en:us", "value": "In order to trigger the issue, it requires the ability to create user/net namespaces.\nOn non-containerized deployments of Red Hat Enterprise Linux 8, you can disable 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\nOn containerized deployments, such as Red Hat OpenShift Container Platform, do not use this mitigation as the functionality is needed to be enabled."}, "name": "CVE-2023-6817", "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:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2023-12-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-6817\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-6817\nhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=317eb9685095678f2c9f5a8189de698c5354316a"], "statement": "Only local users with `CAP_NET_ADMIN` capability or root can trigger this issue. \nOn Red Hat Enterprise Linux, local unprivileged users can exploit unprivileged user namespaces (CONFIG_USER_NS) to grant themselves this capability.\nThe OpenShift Container Platform (OCP) control planes or master machines are based on Red Hat Enterprise Linux CoreOS (RHCOS) that consists primarily of RHEL components, therefore, it is also affected by this kernel vulnerability. A successful exploit needs necessary privileges (CAP_NET_ADMIN) and direct, local access. A local user in RHCOS is already a root with full permissions, hence existence of this vulnerability does not bring any value from the potential attacker perspective. From the OpenShift containers perspective, this vulnerability cannot be exploited as in OpenShift the cluster processes on the node are namespaced, which means that switching the namespace in the running OpenShift container will not bring necessary capabilities.\nThis means that for OpenShift, the impact of this vulnerability is Low.\nSimilar to the CVE-2023-32233 vulnerability, this has been explained in the following blog post as an example of a \"Container escape vulnerability\":\nhttps://www.redhat.com/en/blog/containers-vulnerability-risk-assessment", "threat_severity": "Important"}

{}