{ "document": { "aggregate_severity": { "text": "Medium" }, "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/rhel7els/vex/2022/cve-2022-30698-els_os-rhel7els.json" } ], "tracking": { "current_release_date": "2026-04-24T13:01:27Z", "generator": { "date": "2026-04-24T13:01:27Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2022-30698-ELS_OS-RHEL7ELS", "initial_release_date": "2022-08-01T15:15:00Z", "revision_history": [ { "date": "2022-08-01T15:15:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-04-20T09:24:03Z", "number": "2", "summary": "Official Publication" }, { "date": "2026-04-24T13:01:27Z", "number": "3", "summary": "Update document" } 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"unbound-python-0:1.6.6-5.el7_8.x86_64 as a component of Red Hat Enterprise Linux 7", "product_id": "Red-Hat-7:unbound-python-0:1.6.6-5.el7_8.x86_64" }, "product_reference": "unbound-python-0:1.6.6-5.el7_8.x86_64", "relates_to_product_reference": "Red-Hat-7" } ] }, "vulnerabilities": [ { "cve": "CVE-2022-30698", "cwe": { "id": "CWE-613", "name": "Insufficient Session Expiration" }, "notes": [ { "category": "description", "text": "NLnet Labs Unbound, up to and including version 1.16.1 is vulnerable to a novel type of the \"ghost domain names\" attack. The vulnerability works by targeting an Unbound instance. Unbound is queried for a subdomain of a rogue domain name. The rogue nameserver returns delegation information for the subdomain that updates Unbound's delegation cache. This action can be repeated before expiry of the delegation information by querying Unbound for a second level subdomain which the rogue nameserver provides new delegation information. Since Unbound is a child-centric resolver, the ever-updating child delegation information can keep a rogue domain name resolvable long after revocation. From version 1.16.2 on, Unbound checks the validity of parent delegation records before using cached delegation information.", "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": { "known_affected": [ "Red-Hat-7:unbound-0:1.6.6-5.el7_8.tuxcare.els3.x86_64", "Red-Hat-7:unbound-0:1.6.6-5.el7_8.tuxcare.els4.x86_64", "Red-Hat-7:unbound-0:1.6.6-5.el7_8.x86_64", "Red-Hat-7:unbound-devel-0:1.6.6-5.el7_8.i686", "Red-Hat-7:unbound-devel-0:1.6.6-5.el7_8.tuxcare.els3.i686", "Red-Hat-7:unbound-devel-0:1.6.6-5.el7_8.tuxcare.els3.x86_64", "Red-Hat-7:unbound-devel-0:1.6.6-5.el7_8.tuxcare.els4.i686", "Red-Hat-7:unbound-devel-0:1.6.6-5.el7_8.tuxcare.els4.x86_64", "Red-Hat-7:unbound-devel-0:1.6.6-5.el7_8.x86_64", "Red-Hat-7:unbound-libs-0:1.6.6-5.el7_8.i686", "Red-Hat-7:unbound-libs-0:1.6.6-5.el7_8.tuxcare.els3.i686", "Red-Hat-7:unbound-libs-0:1.6.6-5.el7_8.tuxcare.els3.x86_64", "Red-Hat-7:unbound-libs-0:1.6.6-5.el7_8.tuxcare.els4.i686", "Red-Hat-7:unbound-libs-0:1.6.6-5.el7_8.tuxcare.els4.x86_64", "Red-Hat-7:unbound-libs-0:1.6.6-5.el7_8.x86_64", "Red-Hat-7:unbound-python-0:1.6.6-5.el7_8.tuxcare.els3.x86_64", "Red-Hat-7:unbound-python-0:1.6.6-5.el7_8.tuxcare.els4.x86_64", "Red-Hat-7:unbound-python-0:1.6.6-5.el7_8.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2022-30698" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2023/03/msg00024.html", "url": "https://lists.debian.org/debian-lts-announce/2023/03/msg00024.html" }, { "category": "external", "summary": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L3ZFWZZFPBIL654BG75RWXUMPFQJ5EC/", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L3ZFWZZFPBIL654BG75RWXUMPFQJ5EC/" }, { "category": "external", "summary": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D35CX4SCZVNKZTWJXPDFTHWZHINMGEZD/", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D35CX4SCZVNKZTWJXPDFTHWZHINMGEZD/" }, { "category": "external", "summary": "https://security.gentoo.org/glsa/202212-02", "url": "https://security.gentoo.org/glsa/202212-02" }, { "category": "external", "summary": "https://www.nlnetlabs.nl/downloads/unbound/CVE-2022-30698_CVE-2022-30699.txt", "url": "https://www.nlnetlabs.nl/downloads/unbound/CVE-2022-30698_CVE-2022-30699.txt" } ], "release_date": "2022-08-01T15:15:00Z", "remediations": [ { "category": "no_fix_planned", "details": "CVE-2022-30698 only affects Unbound ≤1.16.1 when it performs full recursive resolution and updates its delegation cache; instances configured solely to forward queries upstream or to serve only internal zones do not use the vulnerable child‑delegation path. Exploitation also requires control of the authoritative nameserver for the attacker’s own domain and merely prolongs that domain’s resolvability after revocation, without enabling arbitrary domain hijacking, code execution on the resolver, or integrity/availability impact. In centrally managed enterprise deployments where recursive DNS for external domains is handled by dedicated infrastructure or upstream providers, the practical exposure and blast radius are low, so this issue can be safely deprioritized.", "product_ids": [ "Red-Hat-7:unbound-0:1.6.6-5.el7_8.tuxcare.els3.x86_64", "Red-Hat-7:unbound-0:1.6.6-5.el7_8.tuxcare.els4.x86_64", "Red-Hat-7:unbound-0:1.6.6-5.el7_8.x86_64", "Red-Hat-7:unbound-devel-0:1.6.6-5.el7_8.i686", "Red-Hat-7:unbound-devel-0:1.6.6-5.el7_8.tuxcare.els3.i686", "Red-Hat-7:unbound-devel-0:1.6.6-5.el7_8.tuxcare.els3.x86_64", "Red-Hat-7:unbound-devel-0:1.6.6-5.el7_8.tuxcare.els4.i686", "Red-Hat-7:unbound-devel-0:1.6.6-5.el7_8.tuxcare.els4.x86_64", "Red-Hat-7:unbound-devel-0:1.6.6-5.el7_8.x86_64", "Red-Hat-7:unbound-libs-0:1.6.6-5.el7_8.i686", "Red-Hat-7:unbound-libs-0:1.6.6-5.el7_8.tuxcare.els3.i686", "Red-Hat-7:unbound-libs-0:1.6.6-5.el7_8.tuxcare.els3.x86_64", "Red-Hat-7:unbound-libs-0:1.6.6-5.el7_8.tuxcare.els4.i686", "Red-Hat-7:unbound-libs-0:1.6.6-5.el7_8.tuxcare.els4.x86_64", "Red-Hat-7:unbound-libs-0:1.6.6-5.el7_8.x86_64", "Red-Hat-7:unbound-python-0:1.6.6-5.el7_8.tuxcare.els3.x86_64", "Red-Hat-7:unbound-python-0:1.6.6-5.el7_8.tuxcare.els4.x86_64", "Red-Hat-7:unbound-python-0:1.6.6-5.el7_8.x86_64" ] } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1" }, "products": [ "Red-Hat-7:unbound-0:1.6.6-5.el7_8.tuxcare.els3.x86_64", "Red-Hat-7:unbound-0:1.6.6-5.el7_8.tuxcare.els4.x86_64", "Red-Hat-7:unbound-0:1.6.6-5.el7_8.x86_64", "Red-Hat-7:unbound-devel-0:1.6.6-5.el7_8.i686", "Red-Hat-7:unbound-devel-0:1.6.6-5.el7_8.tuxcare.els3.i686", "Red-Hat-7:unbound-devel-0:1.6.6-5.el7_8.tuxcare.els3.x86_64", "Red-Hat-7:unbound-devel-0:1.6.6-5.el7_8.tuxcare.els4.i686", "Red-Hat-7:unbound-devel-0:1.6.6-5.el7_8.tuxcare.els4.x86_64", "Red-Hat-7:unbound-devel-0:1.6.6-5.el7_8.x86_64", "Red-Hat-7:unbound-libs-0:1.6.6-5.el7_8.i686", "Red-Hat-7:unbound-libs-0:1.6.6-5.el7_8.tuxcare.els3.i686", "Red-Hat-7:unbound-libs-0:1.6.6-5.el7_8.tuxcare.els3.x86_64", "Red-Hat-7:unbound-libs-0:1.6.6-5.el7_8.tuxcare.els4.i686", "Red-Hat-7:unbound-libs-0:1.6.6-5.el7_8.tuxcare.els4.x86_64", "Red-Hat-7:unbound-libs-0:1.6.6-5.el7_8.x86_64", "Red-Hat-7:unbound-python-0:1.6.6-5.el7_8.tuxcare.els3.x86_64", "Red-Hat-7:unbound-python-0:1.6.6-5.el7_8.tuxcare.els4.x86_64", "Red-Hat-7:unbound-python-0:1.6.6-5.el7_8.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Moderate" } ] } ] }