{ "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/debian10els/vex/2023/cve-2023-50868-els_os-debian10els.json" } ], "tracking": { "current_release_date": "2026-04-10T19:40:03Z", "generator": { "date": "2026-04-10T19:40:03Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2023-50868-ELS_OS-DEBIAN10ELS", "initial_release_date": "2023-01-01T00:00:00Z", "revision_history": [ { "date": "2023-01-01T00:00:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-04-10T19:40:03Z", "number": "2", "summary": "Official Publication" } ], "status": "final", "version": "2" }, "title": "Security update on 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"libirs-export161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64 as a component of Debian None", "product_id": "Debian-10:libirs-export161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64" }, "product_reference": "libirs-export161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "relates_to_product_reference": "Debian-10" } ] }, "vulnerabilities": [ { "cve": "CVE-2023-50868", "cwe": { "id": "CWE-400", "name": "Uncontrolled Resource Consumption" }, "notes": [ { "category": "description", "text": "The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the \"NSEC3\" issue. The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations.", "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": { "under_investigation": [ "Debian-10:bind9-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:bind9-doc-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.all", "Debian-10:bind9-host-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:bind9utils-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:dnsutils-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libbind-dev-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libbind-export-dev-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libbind9-161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libdns-export1104-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libdns1104-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libirs-export161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libirs161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libisc-export1100-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libisc1100-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libisccc-export161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libisccc161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libisccfg-export163-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libisccfg163-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:liblwres161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2023-50868" }, { "category": "external", "summary": "http://www.openwall.com/lists/oss-security/2024/02/16/2", "url": "http://www.openwall.com/lists/oss-security/2024/02/16/2" }, { "category": "external", "summary": "http://www.openwall.com/lists/oss-security/2024/02/16/3", "url": "http://www.openwall.com/lists/oss-security/2024/02/16/3" }, { "category": "external", "summary": "https://access.redhat.com/security/cve/CVE-2023-50868", "url": "https://access.redhat.com/security/cve/CVE-2023-50868" }, { "category": "external", "summary": "https://bugzilla.suse.com/show_bug.cgi?id=1219826", "url": "https://bugzilla.suse.com/show_bug.cgi?id=1219826" }, { "category": "external", "summary": "https://datatracker.ietf.org/doc/html/rfc5155", "url": "https://datatracker.ietf.org/doc/html/rfc5155" }, { "category": "external", "summary": "https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html", "url": "https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html" }, { "category": "external", "summary": "https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1", "url": "https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1" }, { "category": "external", "summary": "https://kb.isc.org/docs/cve-2023-50868", "url": "https://kb.isc.org/docs/cve-2023-50868" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html", "url": "https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html", "url": "https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html" }, { "category": "external", "summary": 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"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/" }, { "category": "external", "summary": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html", "url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html" }, { "category": "external", "summary": "https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/", "url": "https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/" }, { "category": "external", "summary": "https://security.netapp.com/advisory/ntap-20240307-0008/", "url": "https://security.netapp.com/advisory/ntap-20240307-0008/" }, { "category": "external", "summary": "https://www.isc.org/blogs/2024-bind-security-release/", "url": "https://www.isc.org/blogs/2024-bind-security-release/" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2024/09/msg00001.html", "url": "https://lists.debian.org/debian-lts-announce/2024/09/msg00001.html" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2024/11/msg00035.html", "url": "https://lists.debian.org/debian-lts-announce/2024/11/msg00035.html" }, { "category": "external", "summary": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/" }, { "category": "external", "summary": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/" }, { "category": "external", "summary": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/" } ], "release_date": "2024-02-14T16:15:00Z", "remediations": [ { "category": "none_available", "details": "Affected", "product_ids": [ "Debian-10:bind9-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:bind9-doc-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.all", "Debian-10:bind9-host-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:bind9utils-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:dnsutils-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libbind-dev-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libbind-export-dev-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libbind9-161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libdns-export1104-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libdns1104-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libirs-export161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libirs161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libisc-export1100-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libisc1100-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libisccc-export161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libisccc161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libisccfg-export163-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libisccfg163-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:liblwres161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64" ] } ], "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": [ "Debian-10:bind9-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:bind9-doc-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.all", "Debian-10:bind9-host-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:bind9utils-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:dnsutils-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libbind-dev-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libbind-export-dev-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libbind9-161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libdns-export1104-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libdns1104-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libirs-export161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libirs161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libisc-export1100-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libisc1100-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libisccc-export161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libisccc161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libisccfg-export163-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:libisccfg163-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64", "Debian-10:liblwres161-1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els1.amd64" ] } ], "threats": [ { "category": "impact", "details": "Important" } ] } ] }