{ "document": { "aggregate_severity": { "text": "Medium" }, "category": "csaf_vex", "csaf_version": "2.0", "distribution": { "text": "TuxCare License Agreement", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/centos-stream8els/vex/2023/cve-2023-23908-els_os-centos-stream8els.json" } ], "tracking": { "current_release_date": "2026-06-06T01:40:13Z", "generator": { "date": "2026-06-06T01:40:13Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2023-23908-ELS_OS-CENTOS-STREAM8ELS", "initial_release_date": "2023-08-11T03:15:00Z", "revision_history": [ { "date": "2023-08-11T03:15:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-06-04T20:39:29Z", "number": "2", "summary": "Official Publication" }, { "date": "2026-06-06T01:40:13Z", "number": "3", "summary": "Update document" } ], "status": "final", "version": "3" }, "title": "Security update on CVE-2023-23908" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Community Enterprise Operating System 8", "product": { "name": "Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8", "product_identification_helper": { "cpe": "cpe:2.3:o:centos:centos:8:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "Community Enterprise Operating System" }, { "branches": [ { "category": "product_version", "name": "microcode_ctl-4:20240910-2.el8.x86_64", "product": { "name": "microcode_ctl-4:20240910-2.el8.x86_64", "product_id": "microcode_ctl-4:20240910-2.el8.x86_64", "product_identification_helper": { "purl": "pkg:rpm/centos/microcode_ctl@20240910-2.el8?arch=x86_64&epoch=4" } } }, { "category": "product_version", "name": "microcode_ctl-4:20250211-2.el8.x86_64", "product": { "name": "microcode_ctl-4:20250211-2.el8.x86_64", "product_id": "microcode_ctl-4:20250211-2.el8.x86_64", "product_identification_helper": { "purl": "pkg:rpm/centos/microcode_ctl@20250211-2.el8?arch=x86_64&epoch=4" } } }, { "category": "product_version", "name": "microcode_ctl-4:20251111-2.el8.x86_64", "product": { "name": "microcode_ctl-4:20251111-2.el8.x86_64", "product_id": "microcode_ctl-4:20251111-2.el8.x86_64", "product_identification_helper": { "purl": "pkg:rpm/centos/microcode_ctl@20251111-2.el8?arch=x86_64&epoch=4" } } }, { "category": "product_version", "name": "microcode_ctl-4:20250512-2.el8.x86_64", "product": { "name": "microcode_ctl-4:20250512-2.el8.x86_64", "product_id": "microcode_ctl-4:20250512-2.el8.x86_64", "product_identification_helper": { "purl": "pkg:rpm/centos/microcode_ctl@20250512-2.el8?arch=x86_64&epoch=4" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "Red Hat, Inc." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "microcode_ctl-4:20240910-2.el8.tuxcare.els1.x86_64", "product": { "name": "microcode_ctl-4:20240910-2.el8.tuxcare.els1.x86_64", "product_id": "microcode_ctl-4:20240910-2.el8.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/microcode_ctl@20240910-2.el8.tuxcare.els1?arch=x86_64&epoch=4" } } }, { "category": "product_version", "name": "microcode_ctl-4:20250211-2.el8.tuxcare.els1.x86_64", "product": { "name": "microcode_ctl-4:20250211-2.el8.tuxcare.els1.x86_64", "product_id": "microcode_ctl-4:20250211-2.el8.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/microcode_ctl@20250211-2.el8.tuxcare.els1?arch=x86_64&epoch=4" } } }, { "category": "product_version", "name": "microcode_ctl-4:20251111-2.el8.tuxcare.els1.x86_64", "product": { "name": "microcode_ctl-4:20251111-2.el8.tuxcare.els1.x86_64", "product_id": "microcode_ctl-4:20251111-2.el8.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/microcode_ctl@20251111-2.el8.tuxcare.els1?arch=x86_64&epoch=4" } } }, { "category": "product_version", "name": "microcode_ctl-4:20250512-2.el8.tuxcare.els1.x86_64", "product": { "name": "microcode_ctl-4:20250512-2.el8.tuxcare.els1.x86_64", "product_id": "microcode_ctl-4:20250512-2.el8.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/microcode_ctl@20250512-2.el8.tuxcare.els1?arch=x86_64&epoch=4" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "microcode_ctl-4:20240910-2.el8.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:microcode_ctl-4:20240910-2.el8.tuxcare.els1.x86_64" }, "product_reference": "microcode_ctl-4:20240910-2.el8.tuxcare.els1.x86_64", "relates_to_product_reference": "CentOS-Stream-8" }, { "category": "default_component_of", "full_product_name": { "name": "microcode_ctl-4:20250211-2.el8.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:microcode_ctl-4:20250211-2.el8.tuxcare.els1.x86_64" }, "product_reference": "microcode_ctl-4:20250211-2.el8.tuxcare.els1.x86_64", "relates_to_product_reference": "CentOS-Stream-8" }, { "category": "default_component_of", "full_product_name": { "name": "microcode_ctl-4:20251111-2.el8.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:microcode_ctl-4:20251111-2.el8.tuxcare.els1.x86_64" }, "product_reference": "microcode_ctl-4:20251111-2.el8.tuxcare.els1.x86_64", "relates_to_product_reference": "CentOS-Stream-8" }, { "category": "default_component_of", "full_product_name": { "name": "microcode_ctl-4:20250512-2.el8.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:microcode_ctl-4:20250512-2.el8.tuxcare.els1.x86_64" }, "product_reference": "microcode_ctl-4:20250512-2.el8.tuxcare.els1.x86_64", "relates_to_product_reference": "CentOS-Stream-8" }, { "category": "default_component_of", "full_product_name": { "name": "microcode_ctl-4:20240910-2.el8.x86_64 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:microcode_ctl-4:20240910-2.el8.x86_64" }, "product_reference": "microcode_ctl-4:20240910-2.el8.x86_64", "relates_to_product_reference": "CentOS-Stream-8" }, { "category": "default_component_of", "full_product_name": { "name": "microcode_ctl-4:20250211-2.el8.x86_64 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:microcode_ctl-4:20250211-2.el8.x86_64" }, "product_reference": "microcode_ctl-4:20250211-2.el8.x86_64", "relates_to_product_reference": "CentOS-Stream-8" }, { "category": "default_component_of", "full_product_name": { "name": "microcode_ctl-4:20251111-2.el8.x86_64 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:microcode_ctl-4:20251111-2.el8.x86_64" }, "product_reference": "microcode_ctl-4:20251111-2.el8.x86_64", "relates_to_product_reference": "CentOS-Stream-8" }, { "category": "default_component_of", "full_product_name": { "name": "microcode_ctl-4:20250512-2.el8.x86_64 as a component of Community Enterprise Operating System 8", "product_id": "CentOS-Stream-8:microcode_ctl-4:20250512-2.el8.x86_64" }, "product_reference": "microcode_ctl-4:20250512-2.el8.x86_64", "relates_to_product_reference": "CentOS-Stream-8" } ] }, "vulnerabilities": [ { "cve": "CVE-2023-23908", "cwe": { "id": "CWE-284", "name": "Improper Access Control" }, "notes": [ { "category": "description", "text": "Improper access control in some 3rd Generation Intel(R) Xeon(R) Scalable processors may allow a privileged user to potentially enable information disclosure via local access.", "title": "Vulnerability description" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "known_affected": [ "CentOS-Stream-8:microcode_ctl-4:20240910-2.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:microcode_ctl-4:20240910-2.el8.x86_64", "CentOS-Stream-8:microcode_ctl-4:20250211-2.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:microcode_ctl-4:20250211-2.el8.x86_64", "CentOS-Stream-8:microcode_ctl-4:20250512-2.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:microcode_ctl-4:20250512-2.el8.x86_64", "CentOS-Stream-8:microcode_ctl-4:20251111-2.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:microcode_ctl-4:20251111-2.el8.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2023-23908" }, { "category": "external", "summary": "http://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00836.html", "url": "http://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00836.html" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2023/08/msg00026.html", "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00026.html" }, { "category": "external", "summary": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HKREYYTWUY7ZDNIB2N6H5BUJ3LE5VZPE/", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HKREYYTWUY7ZDNIB2N6H5BUJ3LE5VZPE/" }, { "category": "external", "summary": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OL7WI2TJCWSZIQP2RIOLWHOKLM25M44J/", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OL7WI2TJCWSZIQP2RIOLWHOKLM25M44J/" }, { "category": "external", "summary": "https://security.netapp.com/advisory/ntap-20230824-0003/", "url": "https://security.netapp.com/advisory/ntap-20230824-0003/" }, { "category": "external", "summary": "https://www.debian.org/security/2023/dsa-5474", "url": "https://www.debian.org/security/2023/dsa-5474" } ], "release_date": "2023-08-11T03:15:00Z", "remediations": [ { "category": "no_fix_planned", "date": "2026-06-05T20:39:47.963240Z", "details": "This issue is local-only, requires an already-privileged (root/administrator) user, and has Unchanged scope, so it neither provides initial access nor crosses isolation boundaries. Its impact is limited to confidentiality (no integrity or availability effect), meaning exploitation presupposes a prior full compromise of the specific host or guest. It also applies only to certain 3rd‑Gen Intel Xeon Scalable CPU SKUs, narrowing exposure, so it can be safely deprioritized in centrally managed server/VM environments.", "product_ids": [ "CentOS-Stream-8:microcode_ctl-4:20240910-2.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:microcode_ctl-4:20240910-2.el8.x86_64", "CentOS-Stream-8:microcode_ctl-4:20250211-2.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:microcode_ctl-4:20250211-2.el8.x86_64", "CentOS-Stream-8:microcode_ctl-4:20250512-2.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:microcode_ctl-4:20250512-2.el8.x86_64", "CentOS-Stream-8:microcode_ctl-4:20251111-2.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:microcode_ctl-4:20251111-2.el8.x86_64" ] } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 4.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N", "version": "3.1" }, "products": [ "CentOS-Stream-8:microcode_ctl-4:20240910-2.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:microcode_ctl-4:20240910-2.el8.x86_64", "CentOS-Stream-8:microcode_ctl-4:20250211-2.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:microcode_ctl-4:20250211-2.el8.x86_64", "CentOS-Stream-8:microcode_ctl-4:20250512-2.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:microcode_ctl-4:20250512-2.el8.x86_64", "CentOS-Stream-8:microcode_ctl-4:20251111-2.el8.tuxcare.els1.x86_64", "CentOS-Stream-8:microcode_ctl-4:20251111-2.el8.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Moderate" } ] } ] }