{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-28T02:05:50.197","vulnerabilities":[{"cve":{"id":"CVE-2022-30699","sourceIdentifier":"sep@nlnetlabs.nl","published":"2022-08-01T15:15:09.890","lastModified":"2026-06-17T04:44:07.510","vulnStatus":"Modified","cveTags":[],"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 incluyéndola, 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 información de delegación en caché está a punto de expirar. El servidor de nombres falso retrasa la respuesta para que la información de delegación almacenada en la caché caduque. Al recibir la respuesta retrasada que contiene la información de la delegación, Unbound sobrescribe las entradas ya caducadas. Esta acción puede repetirse cuando la información de la delegación está a punto de caducar, haciendo que la información de la delegación falsa sea actualizada constantemente. A partir de la versión 1.16.2, Unbound almacena la hora de inicio de una consulta y la usa para decidir si la información de delegación almacenada en caché puede sobrescribirse"}],"affected":[{"source":"sep@nlnetlabs.nl","affectedData":[{"vendor":"NLnet Labs","product":"Unbound","versions":[{"version":"unspecified","lessThanOrEqual":"1.16.1","versionType":"custom","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":3.6}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-613"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*","versionEndExcluding":"1.16.2","matchCriteriaId":"BB1D0AA5-FEEA-42D2-BBC9-A75F2F508301"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"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"}]}]}],"references":[{"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"},{"url":"https://security.gentoo.org/glsa/202212-02","source":"sep@nlnetlabs.nl","tags":["Third Party Advisory"]},{"url":"https://www.nlnetlabs.nl/downloads/unbound/CVE-2022-30698_CVE-2022-30699.txt","source":"sep@nlnetlabs.nl","tags":["Vendor Advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2023/03/msg00024.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L3ZFWZZFPBIL654BG75RWXUMPFQJ5EC/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D35CX4SCZVNKZTWJXPDFTHWZHINMGEZD/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/202212-02","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]},{"url":"https://www.nlnetlabs.nl/downloads/unbound/CVE-2022-30698_CVE-2022-30699.txt","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]}]}}]}