{"id":"CVE-2019-6469","state":"PUBLISHED","title":"BIND Supported Preview Edition can exit with an assertion failure if ECS is in use","description":"An error in the EDNS Client Subnet (ECS) feature for recursive resolvers can cause BIND to exit with an assertion failure when processing a response that has malformed RRSIGs. Versions affected: BIND 9.10.5-S1 -> 9.11.6-S1 of BIND 9 Supported Preview Edition.","publishedAt":"2019-10-09T14:17:14.528Z","updatedAt":"2024-09-17T01:30:59.645Z","severity":{"score":5.9,"label":"Medium","version":"3.0","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"isc"},"assigner":"isc","products":["ISC BIND 9 Supported Preview Edition"],"affected":[{"vendor":"ISC","product":"BIND 9 Supported Preview Edition","versions":[{"version":"BIND 9.10.5-S1 -> 9.11.6-S1 of BIND 9 Supported Preview Edition.","status":"affected"}]}],"references":["https://kb.isc.org/docs/cve-2019-6469","https://support.f5.com/csp/article/K39751401?utm_source=f5support&amp%3Butm_medium=RSS"],"weaknesses":[],"ingestedAt":"2026-10-29T19:46:06.737Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2019/6xxx/CVE-2019-6469.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2019-6469","state":"PUBLISHED","datePublished":"2019-10-09T14:17:14.528Z","dateUpdated":"2024-09-17T01:30:59.645Z","assignerShortName":"isc","assignerOrgId":"404fd4d2-a609-4245-b543-2c944a302a22","dateReserved":"2019-01-16T00:00:00.000Z"},"containers":{"cna":{"title":"BIND Supported Preview Edition can exit with an assertion failure if ECS is in use","descriptions":[{"lang":"en","value":"An error in the EDNS Client Subnet (ECS) feature for recursive resolvers can cause BIND to exit with an assertion failure when processing a response that has malformed RRSIGs. Versions affected: BIND 9.10.5-S1 -> 9.11.6-S1 of BIND 9 Supported Preview Edition."}],"affected":[{"vendor":"ISC","product":"BIND 9 Supported Preview Edition","versions":[{"version":"BIND 9.10.5-S1 -> 9.11.6-S1 of BIND 9 Supported Preview Edition.","status":"affected"}]}],"references":[{"url":"https://kb.isc.org/docs/cve-2019-6469","tags":["x_refsource_CONFIRM"]},{"url":"https://support.f5.com/csp/article/K39751401?utm_source=f5support&amp%3Butm_medium=RSS","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_0":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":5.9,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.0"}}],"problemTypes":[{"descriptions":[{"description":"An attacker who is able to cause a server to perform a query whose answer will be accompanied by malformed RRSIGs can deliberately cause a server to exit if it is using the recursive ECS feature.","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"isc","dateUpdated":"2019-11-02T02:06:16.000Z","orgId":"404fd4d2-a609-4245-b543-2c944a302a22"},"credits":[{"lang":"en","value":"ISC would like to thank Quad9 for reporting this issue."}],"datePublic":"2019-05-29T00:00:00.000Z","solutions":[{"lang":"en","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 9.11.7-S1"}],"source":{"discovery":"USER"},"workarounds":[{"lang":"en","value":"Only servers which have enabled the EDNS Client Subnet (ECS) feature can be affected by this defect; it can be prevented by disabling ECS options in the server's configuration."}],"x_generator":{"engine":"Vulnogram 0.0.7"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"security-officer@isc.org","DATE_PUBLIC":"2019-05-29T23:00:00.000Z","ID":"CVE-2019-6469","STATE":"PUBLIC","TITLE":"BIND Supported Preview Edition can exit with an assertion failure if ECS is in use"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"BIND 9 Supported Preview Edition","version":{"version_data":[{"version_name":"BIND 9","version_value":"BIND 9.10.5-S1 -> 9.11.6-S1 of BIND 9 Supported Preview Edition."}]}}]},"vendor_name":"ISC"}]}},"credit":[{"lang":"eng","value":"ISC would like to thank Quad9 for reporting this issue."}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"An error in the EDNS Client Subnet (ECS) feature for recursive resolvers can cause BIND to exit with an assertion failure when processing a response that has malformed RRSIGs. Versions affected: BIND 9.10.5-S1 -> 9.11.6-S1 of BIND 9 Supported Preview Edition."}]},"generator":{"engine":"Vulnogram 0.0.7"},"impact":{"cvss":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":5.9,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.0"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"An attacker who is able to cause a server to perform a query whose answer will be accompanied by malformed RRSIGs can deliberately cause a server to exit if it is using the recursive ECS feature."}]}]},"references":{"reference_data":[{"name":"https://kb.isc.org/docs/cve-2019-6469","refsource":"CONFIRM","url":"https://kb.isc.org/docs/cve-2019-6469"},{"name":"https://support.f5.com/csp/article/K39751401?utm_source=f5support&amp;utm_medium=RSS","refsource":"CONFIRM","url":"https://support.f5.com/csp/article/K39751401?utm_source=f5support&amp;utm_medium=RSS"}]},"solution":[{"lang":"en","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 9.11.7-S1"}],"source":{"discovery":"USER"},"work_around":[{"lang":"en","value":"Only servers which have enabled the EDNS Client Subnet (ECS) feature can be affected by this defect; it can be prevented by disabling ECS options in the server's configuration."}]}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://kb.isc.org/docs/cve-2019-6469","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://support.f5.com/csp/article/K39751401?utm_source=f5support&amp%3Butm_medium=RSS","tags":["x_refsource_CONFIRM","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T20:23:20.909Z"}}]}}}