{ "document": { "aggregate_severity": { "text": "High" }, "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/ubuntu18.04els/vex/2023/cve-2023-45288-els_os-ubuntu18_04els.json" } ], "tracking": { "current_release_date": "2026-04-08T12:49:43Z", "generator": { "date": "2026-04-08T12:49:43Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2023-45288-ELS_OS-UBUNTU18.04ELS", "initial_release_date": "2023-01-01T00:00:00Z", "revision_history": [ { "date": "2023-01-01T00:00:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-04-08T12:49:43Z", "number": "2", "summary": "Official Publication" } ], "status": "final", "version": "2" }, "title": "Security update on CVE-2023-45288" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Ubuntu 18.04", "product": { "name": "Ubuntu 18.04", "product_id": "Ubuntu-18", "product_identification_helper": { "cpe": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*" } } } ], "category": "product_family", "name": "Ubuntu" } ], "category": "vendor", "name": "Canonical Ltd." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "tar-scripts-0:1.29b-2ubuntu0.4+tuxcare.els1.amd64", "product": { "name": "tar-scripts-0:1.29b-2ubuntu0.4+tuxcare.els1.amd64", "product_id": "tar-scripts-0:1.29b-2ubuntu0.4+tuxcare.els1.amd64", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/tar-scripts@1.29b-2ubuntu0.4%2Btuxcare.els1?arch=amd64" } } }, { "category": "product_version", "name": "tar-0:1.29b-2ubuntu0.4+tuxcare.els1.amd64", "product": { "name": "tar-0:1.29b-2ubuntu0.4+tuxcare.els1.amd64", "product_id": "tar-0:1.29b-2ubuntu0.4+tuxcare.els1.amd64", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/tar@1.29b-2ubuntu0.4%2Btuxcare.els1?arch=amd64" } } } ], "category": "architecture", "name": "amd64" } ], "category": "vendor", "name": "CloudLinux" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "tar-scripts-0:1.29b-2ubuntu0.4+tuxcare.els1.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:tar-scripts-0:1.29b-2ubuntu0.4+tuxcare.els1.amd64" }, "product_reference": "tar-scripts-0:1.29b-2ubuntu0.4+tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "tar-0:1.29b-2ubuntu0.4+tuxcare.els1.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:tar-0:1.29b-2ubuntu0.4+tuxcare.els1.amd64" }, "product_reference": "tar-0:1.29b-2ubuntu0.4+tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-18" } ] }, "vulnerabilities": [ { "cve": "CVE-2023-45288", "cwe": { "id": "CWE-400", "name": "Uncontrolled Resource Consumption" }, "notes": [ { "category": "description", "text": "An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames. Maintaining HPACK state requires parsing and processing all HEADERS and CONTINUATION frames on a connection. When a request's headers exceed MaxHeaderBytes, no memory is allocated to store the excess headers, but they are still parsed. This permits an attacker to cause an HTTP/2 endpoint to read arbitrary amounts of header data, all associated with a request which is going to be rejected. These headers can include Huffman-encoded data which is significantly more expensive for the receiver to decode than for an attacker to send. The fix sets a limit on the amount of excess header frames we will process before closing a connection.", "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": [ "Ubuntu-18:tar-0:1.29b-2ubuntu0.4+tuxcare.els1.amd64", "Ubuntu-18:tar-scripts-0:1.29b-2ubuntu0.4+tuxcare.els1.amd64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2023-45288" } ], "release_date": "2024-04-03T00:00:00Z", "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "products": [ "Ubuntu-18:tar-0:1.29b-2ubuntu0.4+tuxcare.els1.amd64", "Ubuntu-18:tar-scripts-0:1.29b-2ubuntu0.4+tuxcare.els1.amd64" ] } ], "threats": [ { "category": "impact", "details": "Important" }, { "category": "impact", "details": "important", "product_ids": [ "Ubuntu-18:tar-0:1.29b-2ubuntu0.4+tuxcare.els1.amd64", "Ubuntu-18:tar-scripts-0:1.29b-2ubuntu0.4+tuxcare.els1.amd64" ] } ] } ] }