{ "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/2020/cve-2020-8695-els_os-centos-stream8els.json" } ], "tracking": { "current_release_date": "2026-04-20T15:44:01Z", "generator": { "date": "2026-04-20T15:44:01Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2020-8695-ELS_OS-CENTOS-STREAM8ELS", "initial_release_date": "2020-11-12T18:15:00Z", "revision_history": [ { "date": "2020-11-12T18:15:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-04-13T12:34:04Z", "number": "2", "summary": "Official Publication" }, { "date": "2026-04-20T15:44:01Z", "number": "3", "summary": "Update document" } ], "status": "final", "version": "3" }, "title": "Security update on CVE-2020-8695" }, "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-2020-8695", "cwe": { "id": "CWE-203", "name": "Observable Discrepancy" }, "notes": [ { "category": "description", "text": "Observable discrepancy in the RAPL interface for some Intel(R) 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-2020-8695" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2021/02/msg00007.html", "url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00007.html" }, { "category": "external", "summary": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AQ24MFBVH3HJW3PNRQBRY4YXKC7GA57W/", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AQ24MFBVH3HJW3PNRQBRY4YXKC7GA57W/" }, { "category": "external", "summary": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GRFC7UAPKAFFH5WX3AMDUBVHLKYQA2NZ/", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GRFC7UAPKAFFH5WX3AMDUBVHLKYQA2NZ/" }, { "category": "external", "summary": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MAAGIK5CXKBPGY3R4UR5VO56M7MKLZ43/", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MAAGIK5CXKBPGY3R4UR5VO56M7MKLZ43/" }, { "category": "external", "summary": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NEM2FZWVE4FNGYNQU3WCBAWTZRBWDYUR/", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NEM2FZWVE4FNGYNQU3WCBAWTZRBWDYUR/" }, { "category": "external", "summary": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00389", "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00389" } ], "release_date": "2020-11-12T18:15:00Z", "remediations": [ { "category": "no_fix_planned", "details": "CVE-2020-8695 is a local-only power side‑channel that depends on access to the RAPL/MSR interface—access that is restricted to privileged contexts and not exposed to guest VMs by default—so it cannot be exploited remotely or across hosts. It offers no code‑execution or privilege‑escalation capability and only threatens confidentiality under narrow conditions where high‑resolution power telemetry from the target workload is available. In centrally managed enterprise server/VM environments, these prerequisites make real‑world exploitation unlikely, so this issue can be safely deprioritized.", "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_v2": { "accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 2.1, "baseSeverity": "LOW", "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0" }, "cvss_v3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/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" } ] } ] }