{ "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/2020/cve-2020-11868-els_os-ubuntu18_04els.json" } ], "tracking": { "current_release_date": "2026-04-30T17:44:41Z", "generator": { "date": "2026-04-30T17:44:41Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2020-11868-ELS_OS-UBUNTU18.04ELS", "initial_release_date": "2020-04-17T04:15:00Z", "revision_history": [ { "date": "2020-04-17T04:15:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-04-24T11:14:07Z", "number": "2", "summary": "Official Publication" }, { "date": "2026-04-30T17:44:41Z", "number": "3", "summary": "Update document" } ], "status": "final", "version": "3" }, "title": "Security update on CVE-2020-11868" }, "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": "ntpdate-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64", "product": { "name": "ntpdate-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64", "product_id": "ntpdate-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/ntpdate@4.2.8p10%2Bdfsg-5ubuntu7.3%2Btuxcare.els1?arch=amd64" } } }, { "category": "product_version", "name": "sntp-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64", "product": { "name": "sntp-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64", "product_id": "sntp-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/sntp@4.2.8p10%2Bdfsg-5ubuntu7.3%2Btuxcare.els1?arch=amd64" } } }, { "category": "product_version", "name": "ntp-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64", "product": { "name": "ntp-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64", "product_id": "ntp-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/ntp@4.2.8p10%2Bdfsg-5ubuntu7.3%2Btuxcare.els1?arch=amd64" } } } ], "category": "architecture", "name": "amd64" }, { "branches": [ { "category": "product_version", "name": "ntp-doc-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.all", "product": { "name": "ntp-doc-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.all", "product_id": "ntp-doc-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.all", "product_identification_helper": { "purl": "pkg:deb/cloudlinux/ntp-doc@4.2.8p10%2Bdfsg-5ubuntu7.3%2Btuxcare.els1?arch=all" } } } ], "category": "architecture", "name": "all" } ], "category": "vendor", "name": "CloudLinux" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "ntpdate-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:ntpdate-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64" }, "product_reference": "ntpdate-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "ntp-doc-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.all as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:ntp-doc-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.all" }, "product_reference": "ntp-doc-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.all", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "sntp-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:sntp-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64" }, "product_reference": "sntp-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-18" }, { "category": "default_component_of", "full_product_name": { "name": "ntp-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64 as a component of Ubuntu 18.04", "product_id": "Ubuntu-18:ntp-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64" }, "product_reference": "ntp-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64", "relates_to_product_reference": "Ubuntu-18" } ] }, "vulnerabilities": [ { "cve": "CVE-2020-11868", "cwe": { "id": "CWE-346", "name": "Origin Validation Error" }, "notes": [ { "category": "description", "text": "ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows an off-path attacker to block unauthenticated synchronization via a server mode packet with a spoofed source IP address, because transmissions are rescheduled even when a packet lacks a valid origin timestamp.", "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:ntp-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64", "Ubuntu-18:ntp-doc-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.all", "Ubuntu-18:ntpdate-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64", "Ubuntu-18:sntp-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2020-11868" }, { "category": "external", "summary": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00005.html", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00005.html" }, { "category": "external", "summary": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00044.html", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00044.html" }, { "category": "external", "summary": "http://support.ntp.org/bin/view/Main/NtpBug3592", "url": "http://support.ntp.org/bin/view/Main/NtpBug3592" }, { "category": "external", "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=1716665", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1716665" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2020/05/msg00004.html", "url": "https://lists.debian.org/debian-lts-announce/2020/05/msg00004.html" }, { "category": "external", "summary": "https://security.gentoo.org/glsa/202007-12", "url": "https://security.gentoo.org/glsa/202007-12" }, { "category": "external", "summary": "https://security.netapp.com/advisory/ntap-20200424-0002/", "url": "https://security.netapp.com/advisory/ntap-20200424-0002/" }, { "category": "external", "summary": "https://www.oracle.com//security-alerts/cpujul2021.html", "url": "https://www.oracle.com//security-alerts/cpujul2021.html" } ], "release_date": "2020-04-17T04:15:00Z", "scores": [ { "cvss_v2": { "accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0" }, "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:ntp-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64", "Ubuntu-18:ntp-doc-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.all", "Ubuntu-18:ntpdate-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64", "Ubuntu-18:sntp-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64" ] } ], "threats": [ { "category": "impact", "details": "Important" }, { "category": "impact", "details": "important", "product_ids": [ "Ubuntu-18:ntp-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64", "Ubuntu-18:ntp-doc-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.all", "Ubuntu-18:ntpdate-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64", "Ubuntu-18:sntp-1:4.2.8p10+dfsg-5ubuntu7.3+tuxcare.els1.amd64" ] } ] } ] }