{ "document": { "aggregate_severity": { "text": "Critical" }, "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/almalinux9.2esu/vex/2023/cve-2023-46853-els_os-almalinux9_2esu.json" } ], "tracking": { "current_release_date": "2026-06-13T02:50:10Z", "generator": { "date": "2026-06-13T02:50:10Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2023-46853-ELS_OS-ALMALINUX9.2ESU", "initial_release_date": "2023-10-27T20:15:00Z", "revision_history": [ { "date": "2023-10-27T20:15:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-06-13T02:50:10Z", "number": "2", "summary": "Official Publication" } ], "status": "final", "version": "2" }, "title": "Security update on CVE-2023-46853" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "AlmaLinux 9.2", "product": { "name": "AlmaLinux 9.2", "product_id": "AlmaLinux-9.2", "product_identification_helper": { "cpe": "cpe:2.3:o:almalinux:almalinux:9.2:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "AlmaLinux" } ], "category": "vendor", "name": "AlmaLinux OS Foundation" }, { "branches": [ { "branches": [ { "category": "product_version", "name": "memcached-devel-0:1.6.9-7.el9.tuxcare.els1.x86_64", "product": { "name": "memcached-devel-0:1.6.9-7.el9.tuxcare.els1.x86_64", "product_id": "memcached-devel-0:1.6.9-7.el9.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/memcached-devel@1.6.9-7.el9.tuxcare.els1?arch=x86_64" } } }, { "category": "product_version", "name": "memcached-0:1.6.9-7.el9.tuxcare.els1.x86_64", "product": { "name": "memcached-0:1.6.9-7.el9.tuxcare.els1.x86_64", "product_id": "memcached-0:1.6.9-7.el9.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/memcached@1.6.9-7.el9.tuxcare.els1?arch=x86_64" } } }, { "category": "product_version", "name": "memcached-selinux-0:1.6.9-7.el9.tuxcare.els1.x86_64", "product": { "name": "memcached-selinux-0:1.6.9-7.el9.tuxcare.els1.x86_64", "product_id": "memcached-selinux-0:1.6.9-7.el9.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/memcached-selinux@1.6.9-7.el9.tuxcare.els1?arch=x86_64" } } } ], "category": "architecture", "name": "x86_64" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "memcached-devel-0:1.6.9-7.el9.tuxcare.els1.x86_64 as a component of AlmaLinux 9.2", "product_id": "AlmaLinux-9.2:memcached-devel-0:1.6.9-7.el9.tuxcare.els1.x86_64" }, "product_reference": "memcached-devel-0:1.6.9-7.el9.tuxcare.els1.x86_64", "relates_to_product_reference": "AlmaLinux-9.2" }, { "category": "default_component_of", "full_product_name": { "name": "memcached-0:1.6.9-7.el9.tuxcare.els1.x86_64 as a component of AlmaLinux 9.2", "product_id": "AlmaLinux-9.2:memcached-0:1.6.9-7.el9.tuxcare.els1.x86_64" }, "product_reference": "memcached-0:1.6.9-7.el9.tuxcare.els1.x86_64", "relates_to_product_reference": "AlmaLinux-9.2" }, { "category": "default_component_of", "full_product_name": { "name": "memcached-selinux-0:1.6.9-7.el9.tuxcare.els1.x86_64 as a component of AlmaLinux 9.2", "product_id": "AlmaLinux-9.2:memcached-selinux-0:1.6.9-7.el9.tuxcare.els1.x86_64" }, "product_reference": "memcached-selinux-0:1.6.9-7.el9.tuxcare.els1.x86_64", "relates_to_product_reference": "AlmaLinux-9.2" } ] }, "vulnerabilities": [ { "cve": "CVE-2023-46853", "cwe": { "id": "CWE-193", "name": "Off-by-one Error" }, "notes": [ { "category": "description", "text": "In Memcached before 1.6.22, an off-by-one error exists when processing proxy requests in proxy mode, if \\n is used instead of \\r\\n.", "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" }, { "category": "other", "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.", "title": "Statement" } ], "product_status": { "known_not_affected": [ "AlmaLinux-9.2:memcached-0:1.6.9-7.el9.tuxcare.els1.x86_64", "AlmaLinux-9.2:memcached-devel-0:1.6.9-7.el9.tuxcare.els1.x86_64", "AlmaLinux-9.2:memcached-selinux-0:1.6.9-7.el9.tuxcare.els1.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2023-46853" }, { "category": "external", "summary": "https://github.com/memcached/memcached/commit/6987918e9a3094ec4fc8976f01f769f624d790fa", "url": "https://github.com/memcached/memcached/commit/6987918e9a3094ec4fc8976f01f769f624d790fa" }, { "category": "external", "summary": "https://github.com/memcached/memcached/compare/1.6.21...1.6.22", "url": "https://github.com/memcached/memcached/compare/1.6.21...1.6.22" } ], "release_date": "2023-10-27T20:15:00Z", "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "products": [ "AlmaLinux-9.2:memcached-0:1.6.9-7.el9.tuxcare.els1.x86_64", "AlmaLinux-9.2:memcached-devel-0:1.6.9-7.el9.tuxcare.els1.x86_64", "AlmaLinux-9.2:memcached-selinux-0:1.6.9-7.el9.tuxcare.els1.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Critical" }, { "category": "impact", "date": "2026-06-12T13:02:15.057313Z", "details": "CVE-2023-46853 is confined to Memcached’s optional proxy subsystem and only triggers when the daemon is both built with proxy support and started in proxy mode (for example via the proxy_config option), where LF-terminated lines are parsed. In this environment Memcached 1.6.9 is operated in standard server mode with proxy functionality not enabled, so the vulnerable proxy code path is not present or reachable. A downstream review has been opened to track the upstream fix, but there is no exposure while proxy mode remains disabled.", "product_ids": [ "AlmaLinux-9.2:memcached-0:1.6.9-7.el9.tuxcare.els1.x86_64", "AlmaLinux-9.2:memcached-devel-0:1.6.9-7.el9.tuxcare.els1.x86_64", "AlmaLinux-9.2:memcached-selinux-0:1.6.9-7.el9.tuxcare.els1.x86_64" ] } ] } ] }