{"containers": {"cna": {"affected": [{"product": "kernel", "vendor": "n/a", "versions": [{"status": "affected", "version": "kernel 4.18.0"}]}], "descriptions": [{"lang": "en", "value": "A flaw null pointer dereference in the Nitro Enclaves kernel driver was found in the way that Enclaves VMs forces closures on the enclave file descriptor. A local user of a host machine could use this flaw to crash the system or escalate their privileges on the system."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-416", "description": "(CWE-416|CWE-476)", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2022-04-01T22:17:47.000Z", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1953022"}, {"tags": ["x_refsource_MISC"], "url": "https://lore.kernel.org/lkml/20210429165941.27020-2-andraprs%40amazon.com/"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "secalert@redhat.com", "ID": "CVE-2021-3543", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "kernel", "version": {"version_data": [{"version_value": "kernel 4.18.0"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A flaw null pointer dereference in the Nitro Enclaves kernel driver was found in the way that Enclaves VMs forces closures on the enclave file descriptor. A local user of a host machine could use this flaw to crash the system or escalate their privileges on the system."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "(CWE-416|CWE-476)"}]}]}, "references": {"reference_data": [{"name": "https://bugzilla.redhat.com/show_bug.cgi?id=1953022", "refsource": "MISC", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1953022"}, {"name": "https://lore.kernel.org/lkml/20210429165941.27020-2-andraprs@amazon.com/", "refsource": "MISC", "url": "https://lore.kernel.org/lkml/20210429165941.27020-2-andraprs@amazon.com/"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T17:01:07.979Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1953022"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://lore.kernel.org/lkml/20210429165941.27020-2-andraprs%40amazon.com/"}]}]}, "cveMetadata": {"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2021-3543", "datePublished": "2021-06-01T13:20:34.000Z", "dateReserved": "2021-05-10T00:00:00.000Z", "dateUpdated": "2024-08-03T17:01:07.979Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:nitro_enclaves_project:nitro_enclaves:*:*:*:*:*:*:*:*", "matchCriteriaId": "002C3B25-D053-4BDF-B81A-8C70C916ABF4", "versionEndExcluding": "5.10.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*", "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*", "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "A flaw null pointer dereference in the Nitro Enclaves kernel driver was found in the way that Enclaves VMs forces closures on the enclave file descriptor. A local user of a host machine could use this flaw to crash the system or escalate their privileges on the system."}, {"lang": "es", "value": "Se encontr\u00f3 una fallo desreferencia de puntero null en el controlador Nitro Enclaves kernel en la forma en que las m\u00e1quinas virtuales de Enclaves fuerzan cierres en el descriptor de archivo del enclave. Un usuario local de una m\u00e1quina host podr\u00eda usar este fallo para bloquear el sistema o escalar sus privilegios en el sistema"}], "id": "CVE-2021-3543", "lastModified": "2024-11-21T06:21:48.200", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.2, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 0.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-06-01T14:15:10.407", "references": [{"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1953022"}, {"source": "secalert@redhat.com", "url": "https://lore.kernel.org/lkml/20210429165941.27020-2-andraprs%40amazon.com/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1953022"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lore.kernel.org/lkml/20210429165941.27020-2-andraprs%40amazon.com/"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-416"}, {"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2021:2169", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-305.3.1.rt7.75.el8_4", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-06-01T00:00:00Z"}, {"advisory": "RHSA-2021:2168", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-305.3.1.el8_4", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-06-01T00:00:00Z"}], "bugzilla": {"description": "kernel: nitro_enclaves stale file descriptors on failed usercopy", "id": "1953022", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1953022"}, "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-416|CWE-476)", "details": ["A flaw null pointer dereference in the Nitro Enclaves kernel driver was found in the way that Enclaves VMs forces closures on the enclave file descriptor. A local user of a host machine could use this flaw to crash the system or escalate their privileges on the system.", "A flaw null pointer dereference in the Nitro Enclaves kernel driver was found in the way that Enclaves VMs forces closures on the enclave file descriptor. A local user of a host machine could use this flaw to crash the system or escalate their privileges on the system."], "name": "CVE-2021-3543", "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-alt", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2021-04-29T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-3543\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-3543\nhttps://lore.kernel.org/lkml/20210429165941.27020-2-andraprs@amazon.com/"], "statement": "This flaw is rated as having a Moderate impact because in the default configuration, the issue can only be triggered by a privileged local user (with access to the ne group if this user manages Enclaves VMs).", "threat_severity": "Moderate"}

{}