{"dataType": "CVE_RECORD", "dataVersion": "5.0", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2022-30699", "assignerOrgId": "206fc3a0-e175-490b-9eaa-a5738056c9f6", "assignerShortName": "NLnet Labs", "dateUpdated": "2023-03-29T00:00:00", "dateReserved": "2022-05-13T00:00:00", "datePublished": "2022-08-01T00:00:00"}, "containers": {"cna": {"title": "Novel \"ghost domain names\" attack by updating almost expired delegation information", "datePublic": "2022-08-01T00:00:00", "providerMetadata": {"orgId": "206fc3a0-e175-490b-9eaa-a5738056c9f6", "shortName": "NLnet Labs", "dateUpdated": "2023-03-29T00:00:00"}, "descriptions": [{"lang": "en", "value": "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 rogue domain name when the cached delegation information is about to expire. The rogue nameserver delays the response so that the cached delegation information is expired. Upon receiving the delayed answer containing the delegation information, Unbound overwrites the now expired entries. This action can be repeated when the delegation information is about to expire making the rogue delegation information ever-updating. From version 1.16.2 on, Unbound stores the start time for a query and uses that to decide if the cached delegation information can be overwritten."}], "affected": [{"vendor": "NLnet Labs", "product": "Unbound", "versions": [{"version": "unspecified", "lessThanOrEqual": "1.16.1", "status": "affected", "versionType": "custom"}]}], "references": [{"url": "https://www.nlnetlabs.nl/downloads/unbound/CVE-2022-30698_CVE-2022-30699.txt"}, {"name": "FEDORA-2022-f89beb0640", "tags": ["vendor-advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L3ZFWZZFPBIL654BG75RWXUMPFQJ5EC/"}, {"name": "FEDORA-2022-0a914d5c6b", "tags": ["vendor-advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D35CX4SCZVNKZTWJXPDFTHWZHINMGEZD/"}, {"name": "GLSA-202212-02", "tags": ["vendor-advisory"], "url": "https://security.gentoo.org/glsa/202212-02"}, {"name": "[debian-lts-announce] 20230329 [SECURITY] [DLA 3371-1] unbound security update", "tags": ["mailing-list"], "url": "https://lists.debian.org/debian-lts-announce/2023/03/msg00024.html"}], "credits": [{"lang": "en", "value": "We would like to thank Xiang Li from the Network and Information Security Lab of Tsinghua University for discovering and disclosing the vulnerability."}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}}}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*", "matchCriteriaId": "BB1D0AA5-FEEA-42D2-BBC9-A75F2F508301", "versionEndExcluding": "1.16.2", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*", "matchCriteriaId": "80E516C0-98A4-4ADE-B69F-66A772E2BAAA", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*", "matchCriteriaId": "5C675112-476C-4D7C-BCB9-A2FB2D0BC9FD", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "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 rogue domain name when the cached delegation information is about to expire. The rogue nameserver delays the response so that the cached delegation information is expired. Upon receiving the delayed answer containing the delegation information, Unbound overwrites the now expired entries. This action can be repeated when the delegation information is about to expire making the rogue delegation information ever-updating. From version 1.16.2 on, Unbound stores the start time for a query and uses that to decide if the cached delegation information can be overwritten."}, {"lang": "es", "value": "NLnet Labs Unbound, versiones hasta 1.16.1 incluy\u00e9ndola, es vulnerable a un nuevo tipo de ataque de \"ghost domain names\". La vulnerabilidad funciona apuntando a una instancia de Unbound. Unbound es consultado por un nombre de dominio falso cuando la informaci\u00f3n de delegaci\u00f3n en cach\u00e9 est\u00e1 a punto de expirar. El servidor de nombres falso retrasa la respuesta para que la informaci\u00f3n de delegaci\u00f3n almacenada en la cach\u00e9 caduque. Al recibir la respuesta retrasada que contiene la informaci\u00f3n de la delegaci\u00f3n, Unbound sobrescribe las entradas ya caducadas. Esta acci\u00f3n puede repetirse cuando la informaci\u00f3n de la delegaci\u00f3n est\u00e1 a punto de caducar, haciendo que la informaci\u00f3n de la delegaci\u00f3n falsa sea actualizada constantemente. A partir de la versi\u00f3n 1.16.2, Unbound almacena la hora de inicio de una consulta y la usa para decidir si la informaci\u00f3n de delegaci\u00f3n almacenada en cach\u00e9 puede sobrescribirse"}], "id": "CVE-2022-30699", "lastModified": "2023-11-07T03:47:23.970", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-08-01T15:15:09.890", "references": [{"source": "sep@nlnetlabs.nl", "url": "https://lists.debian.org/debian-lts-announce/2023/03/msg00024.html"}, {"source": "sep@nlnetlabs.nl", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L3ZFWZZFPBIL654BG75RWXUMPFQJ5EC/"}, {"source": "sep@nlnetlabs.nl", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D35CX4SCZVNKZTWJXPDFTHWZHINMGEZD/"}, {"source": "sep@nlnetlabs.nl", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202212-02"}, {"source": "sep@nlnetlabs.nl", "tags": ["Vendor Advisory"], "url": "https://www.nlnetlabs.nl/downloads/unbound/CVE-2022-30698_CVE-2022-30699.txt"}], "sourceIdentifier": "sep@nlnetlabs.nl", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-613"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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