{ "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/rhel7els/vex/2023/cve-2023-28746-els_os-rhel7els.json" } ], "tracking": { "current_release_date": "2026-07-28T15:54:05Z", "generator": { "date": "2026-07-28T15:54:05Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2023-28746-ELS_OS-RHEL7ELS", "initial_release_date": "2023-01-01T00:00:00Z", "revision_history": [ { "date": "2023-01-01T00:00:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-07-28T15:54:05Z", "number": "2", "summary": "Official Publication" } ], "status": "final", "version": "2" }, "title": "Security update on CVE-2023-28746" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Red Hat Enterprise Linux 7", "product": { "name": "Red Hat Enterprise Linux 7", "product_id": "Red-Hat-7", "product_identification_helper": { "cpe": "cpe:2.3:o:redhat:enterprise_linux:7:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "Red Hat Enterprise Linux" }, { "branches": [ { "category": "product_version", "name": "microcode_ctl-2:2.1-73.25.el7_9.x86_64", "product": { "name": "microcode_ctl-2:2.1-73.25.el7_9.x86_64", "product_id": "microcode_ctl-2:2.1-73.25.el7_9.x86_64", "product_identification_helper": { "purl": "pkg:rpm/redhat/microcode_ctl@2.1-73.25.el7_9?arch=x86_64&epoch=2" } } }, { "category": "product_version", "name": "microcode_ctl-2:2.1-73.26.el7_9.x86_64", "product": { "name": "microcode_ctl-2:2.1-73.26.el7_9.x86_64", "product_id": "microcode_ctl-2:2.1-73.26.el7_9.x86_64", "product_identification_helper": { "purl": "pkg:rpm/redhat/microcode_ctl@2.1-73.26.el7_9?arch=x86_64&epoch=2" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "Red Hat, Inc." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "microcode_ctl-2:2.1-73.25.el7_9.tuxcare.els1.x86_64", "product": { "name": "microcode_ctl-2:2.1-73.25.el7_9.tuxcare.els1.x86_64", "product_id": "microcode_ctl-2:2.1-73.25.el7_9.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/microcode_ctl@2.1-73.25.el7_9.tuxcare.els1?arch=x86_64&epoch=2" } } }, { "category": "product_version", "name": "microcode_ctl-2:2.1-73.26.el7_9.tuxcare.els1.x86_64", "product": { "name": "microcode_ctl-2:2.1-73.26.el7_9.tuxcare.els1.x86_64", "product_id": "microcode_ctl-2:2.1-73.26.el7_9.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/microcode_ctl@2.1-73.26.el7_9.tuxcare.els1?arch=x86_64&epoch=2" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "microcode_ctl-2:2.1-73.25.el7_9.tuxcare.els1.x86_64 as a component of Red Hat Enterprise Linux 7", "product_id": "Red-Hat-7:microcode_ctl-2:2.1-73.25.el7_9.tuxcare.els1.x86_64" }, "product_reference": "microcode_ctl-2:2.1-73.25.el7_9.tuxcare.els1.x86_64", "relates_to_product_reference": "Red-Hat-7" }, { "category": "default_component_of", "full_product_name": { "name": "microcode_ctl-2:2.1-73.25.el7_9.x86_64 as a component of Red Hat Enterprise Linux 7", "product_id": "Red-Hat-7:microcode_ctl-2:2.1-73.25.el7_9.x86_64" }, "product_reference": "microcode_ctl-2:2.1-73.25.el7_9.x86_64", "relates_to_product_reference": "Red-Hat-7" }, { "category": "default_component_of", "full_product_name": { "name": "microcode_ctl-2:2.1-73.26.el7_9.tuxcare.els1.x86_64 as a component of Red Hat Enterprise Linux 7", "product_id": "Red-Hat-7:microcode_ctl-2:2.1-73.26.el7_9.tuxcare.els1.x86_64" }, "product_reference": "microcode_ctl-2:2.1-73.26.el7_9.tuxcare.els1.x86_64", "relates_to_product_reference": "Red-Hat-7" }, { "category": "default_component_of", "full_product_name": { "name": "microcode_ctl-2:2.1-73.26.el7_9.x86_64 as a component of Red Hat Enterprise Linux 7", "product_id": "Red-Hat-7:microcode_ctl-2:2.1-73.26.el7_9.x86_64" }, "product_reference": "microcode_ctl-2:2.1-73.26.el7_9.x86_64", "relates_to_product_reference": "Red-Hat-7" } ] }, "vulnerabilities": [ { "cve": "CVE-2023-28746", "cwe": { "id": "CWE-1342", "name": "Information Exposure through Microarchitectural State after Transient Execution" }, "notes": [ { "category": "description", "text": "Information exposure through microarchitectural state after transient execution from some register files for some Intel(R) Atom(R) Processors may allow an authenticated 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": [ "Red-Hat-7:microcode_ctl-2:2.1-73.25.el7_9.tuxcare.els1.x86_64", "Red-Hat-7:microcode_ctl-2:2.1-73.25.el7_9.x86_64", "Red-Hat-7:microcode_ctl-2:2.1-73.26.el7_9.tuxcare.els1.x86_64", "Red-Hat-7:microcode_ctl-2:2.1-73.26.el7_9.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2023-28746" } ], "release_date": "2024-03-14T17:15:00Z", "remediations": [ { "category": "no_fix_planned", "date": "2026-07-28T11:56:54.280496Z", "details": "- CVE-2023-28746 (RFDS) is a local-only, transient-execution data-sampling issue limited to Intel Atom/E‑core microarchitectures; mainstream server-class Intel Xeon Scalable CPUs are not in scope. \n- Even on affected hardware, an attacker must run code locally on the same machine and can only infer stale register contents (no integrity or availability impact), which constrains practical exploitation value. \n- Intel’s microcode enables modern kernels/hypervisors to clear the relevant register-file state at user/VM boundaries (via VERW), preventing cross-process or cross-tenant recovery and making this a low-priority concern in centrally managed enterprise VM/server environments.", "product_ids": [ "Red-Hat-7:microcode_ctl-2:2.1-73.25.el7_9.tuxcare.els1.x86_64", "Red-Hat-7:microcode_ctl-2:2.1-73.25.el7_9.x86_64", "Red-Hat-7:microcode_ctl-2:2.1-73.26.el7_9.tuxcare.els1.x86_64", "Red-Hat-7:microcode_ctl-2:2.1-73.26.el7_9.x86_64" ] } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.1" }, "products": [ "Red-Hat-7:microcode_ctl-2:2.1-73.25.el7_9.tuxcare.els1.x86_64", "Red-Hat-7:microcode_ctl-2:2.1-73.25.el7_9.x86_64", "Red-Hat-7:microcode_ctl-2:2.1-73.26.el7_9.tuxcare.els1.x86_64", "Red-Hat-7:microcode_ctl-2:2.1-73.26.el7_9.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Moderate" } ] } ] }