{"affected":[{"affectedData":[{"modules":["Block Verification"],"product":"Halcyon","vendor":"ghostlander","versions":[{"status":"affected","version":"n/a"}]}],"source":"cna@vuldb.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:halcyon_project:halcyon:*:*:*:*:*:*:*:*","matchCriteriaId":"FD1553FD-C96D-4F32-B93F-E785D7CC4329","versionEndExcluding":"1.1.1.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability has been found in ghostlander Halcyon and classified as critical. Affected by this vulnerability is the function CBlock::AddToBlockIndex of the file src/main.cpp of the component Block Verification. The manipulation leads to improper access controls. The attack can be launched remotely. Upgrading to version 1.1.1.0-hal is able to address this issue. The identifier of the patch is 0675b25ae9cc10b5fdc8ea3a32c642979762d45e. It is recommended to upgrade the affected component. The identifier VDB-217417 was assigned to this vulnerability."},{"lang":"es","value":"Se ha encontrado una vulnerabilidad en Ghostlander Halcyon y ha sido clasificada como crítica. La función CBlock::AddToBlockIndex del archivo src/main.cpp del componente Block Verification es afectada por esta vulnerabilidad. La manipulación conduce a controles de acceso inadecuados. El ataque se puede lanzar de forma remota. La actualización a la versión 1.1.1.0-hal puede solucionar este problema. El identificador del parche es 0675b25ae9cc10b5fdc8ea3a32c642979762d45e. Se recomienda actualizar el componente afectado. A esta vulnerabilidad se le asignó el identificador VDB-217417."}],"id":"CVE-2021-4300","lastModified":"2026-06-17T04:19:27.370","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"MEDIUM","cvssData":{"accessComplexity":"LOW","accessVector":"NETWORK","authentication":"SINGLE","availabilityImpact":"PARTIAL","baseScore":6.5,"confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","vectorString":"AV:N/AC:L/Au:S/C:P/I:P/A:P","version":"2.0"},"exploitabilityScore":8.0,"impactScore":6.4,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"cna@vuldb.com","type":"Secondary","userInteractionRequired":false}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":6.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"exploitabilityScore":2.8,"impactScore":3.4,"source":"cna@vuldb.com","type":"Secondary"},{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":3.9,"impactScore":5.9,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2023-01-04T22:15:08.903","references":[{"source":"cna@vuldb.com","tags":["Patch"],"url":"https://github.com/ghostlander/Halcyon/commit/0675b25ae9cc10b5fdc8ea3a32c642979762d45e"},{"source":"cna@vuldb.com","tags":["Release Notes"],"url":"https://github.com/ghostlander/Halcyon/releases/tag/v1.1.1.0-hal"},{"source":"cna@vuldb.com","tags":["Permissions Required","Third Party Advisory"],"url":"https://vuldb.com/?ctiid.217417"},{"source":"cna@vuldb.com","tags":["Permissions Required","Third Party Advisory"],"url":"https://vuldb.com/?id.217417"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"],"url":"https://github.com/ghostlander/Halcyon/commit/0675b25ae9cc10b5fdc8ea3a32c642979762d45e"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Release Notes"],"url":"https://github.com/ghostlander/Halcyon/releases/tag/v1.1.1.0-hal"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Permissions Required","Third Party Advisory"],"url":"https://vuldb.com/?ctiid.217417"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Permissions Required","Third Party Advisory"],"url":"https://vuldb.com/?id.217417"}],"sourceIdentifier":"cna@vuldb.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-284"}],"source":"cna@vuldb.com","type":"Secondary"},{"description":[{"lang":"en","value":"NVD-CWE-Other"}],"source":"nvd@nist.gov","type":"Primary"}]}