{ "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/ubuntu18.04els/vex/2017/cve-2017-12166-els_os-ubuntu18_04els.json" } ], "tracking": { "current_release_date": "2026-06-13T07:16:56Z", "generator": { "date": "2026-06-13T07:16:56Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2017-12166-ELS_OS-UBUNTU18.04ELS", "initial_release_date": "2017-10-04T01:29:00Z", "revision_history": [ { "date": "2017-10-04T01:29:00Z", "number": "1", "summary": "Initial version" }, { "date": "2025-11-29T13:08:56Z", "number": "2", "summary": "Official Publication" }, { "date": "2025-12-23T22:15:38Z", "number": "3", "summary": "Update document" }, { "date": "2026-06-13T07:16:56Z", "number": "4", "summary": "Update document" } ], "status": "final", "version": "4" }, "title": "Security update on CVE-2017-12166" }, "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": "openvpn-0:2.4.4-2ubuntu1.7+tuxcare.els1.amd64", "product": { "name": "openvpn-0:2.4.4-2ubuntu1.7+tuxcare.els1.amd64", "product_id": "openvpn-0:2.4.4-2ubuntu1.7+tuxcare.els1.amd64", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/openvpn@2.4.4-2ubuntu1.7%2Btuxcare.els1?arch=amd64" } } } ], "category": "architecture", "name": "amd64" } ], "category": "vendor", "name": "CloudLinux" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "openvpn-0:2.4.4-2ubuntu1.7+tuxcare.els1.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:openvpn-0:2.4.4-2ubuntu1.7+tuxcare.els1.amd64" }, "product_reference": "openvpn-0:2.4.4-2ubuntu1.7+tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-18" } ] }, "vulnerabilities": [ { "cve": "CVE-2017-12166", "cwe": { "id": "CWE-787", "name": "Out-of-bounds Write" }, "notes": [ { "category": "description", "text": "OpenVPN versions before 2.3.3 and 2.4.x before 2.4.4 are vulnerable to a buffer overflow vulnerability when key-method 1 is used, possibly resulting in code execution.", "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:openvpn-0:2.4.4-2ubuntu1.7+tuxcare.els1.amd64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2017-12166" }, { "category": "external", "summary": "http://www.securityfocus.com/bid/101153", "url": "http://www.securityfocus.com/bid/101153" }, { "category": "external", "summary": "http://www.securitytracker.com/id/1039470", "url": "http://www.securitytracker.com/id/1039470" }, { "category": "external", "summary": "https://community.openvpn.net/openvpn/wiki/CVE-2017-12166", "url": "https://community.openvpn.net/openvpn/wiki/CVE-2017-12166" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html", "url": "https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html" } ], "release_date": "2017-10-04T01:29:00Z", "scores": [ { "cvss_v2": { "accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0" }, "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": [ "Ubuntu-18:openvpn-0:2.4.4-2ubuntu1.7+tuxcare.els1.amd64" ] } ], "threats": [ { "category": "impact", "details": "Critical" }, { "category": "impact", "date": "2026-06-12T13:02:15.057313Z", "details": "Not affected: the deployed package is OpenVPN 2.4.4-2ubuntu1, which includes the upstream fix for CVE-2017-12166. This overflow only impacted OpenVPN 2.4.x prior to 2.4.4 (and older 2.3.x) when the deprecated “key-method 1” path was used; in 2.4.4-2ubuntu1 the read_key() bounds check is corrected, so the vulnerable code path is not present.", "product_ids": [ "Ubuntu-18:openvpn-0:2.4.4-2ubuntu1.7+tuxcare.els1.amd64" ] } ] } ] }