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In those versions which have ECS support, enabling nxdomain-redirect is likely to lead to BIND exiting due to assertion failure. Versions affected: BIND Supported Preview Edition version 9.10.5-S1 -> 9.11.5-S5. ONLY BIND Supported Preview Edition releases are affected."}]},"generator":{"engine":"Vulnogram 0.0.7"},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.0"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"If nxdomain-redirect is enabled (via configuration) in a vulnerable BIND release, a malicious party can cause BIND to exit by deliberately triggering the bug."}]}]},"references":{"reference_data":[{"name":"https://kb.isc.org/docs/cve-2019-6468","refsource":"CONFIRM","url":"https://kb.isc.org/docs/cve-2019-6468"},{"refsource":"CONFIRM","name":"https://www.synology.com/security/advisory/Synology_SA_19_20","url":"https://www.synology.com/security/advisory/Synology_SA_19_20"}]},"solution":[{"lang":"eng","value":"Upgrade to the patched release most closely related to your current version of BIND:\n\nBIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.\n\n+    BIND 9.11.5-S6\n+    BIND 9.11.6-S1\n\n\n\n"}],"source":{"discovery":"USER"},"work_around":[{"lang":"eng","value":"Exploitation of this defect can be effectively prevented by disabling the nxdomain-redirect feature in the nameserver's configuration."}]},"nvd":{"publishedDate":"2019-10-09 16:15:00","lastModifiedDate":"2019-12-18 18:15:00","problem_types":["CWE-617"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL","baseScore":5},"severity":"MEDIUM","exploitabilityScore":10,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:isc:bind:9.10.5:s1:*:*:supported_preview:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:isc:bind:9.11.5:s5:*:*:supported_preview:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2019","CveId":"6468","Ordinal":"144177","Title":"CVE-2019-6468","CVE":"CVE-2019-6468","Year":"2019"},"notes":[{"CveYear":"2019","CveId":"6468","Ordinal":"1","NoteData":"In BIND Supported Preview Edition, an error in the nxdomain-redirect feature can occur in versions which support EDNS Client Subnet (ECS) features. In those versions which have ECS support, enabling nxdomain-redirect is likely to lead to BIND exiting due to assertion failure. Versions affected: BIND Supported Preview Edition version 9.10.5-S1 -> 9.11.5-S5. ONLY BIND Supported Preview Edition releases are affected.","Type":"Description","Title":null},{"CveYear":"2019","CveId":"6468","Ordinal":"2","NoteData":"2019-10-09","Type":"Other","Title":"Published"},{"CveYear":"2019","CveId":"6468","Ordinal":"3","NoteData":"2019-12-18","Type":"Other","Title":"Modified"}]}}}