{"id":"CVE-2021-25214","details":"In BIND 9.8.5 -\u003e 9.8.8, 9.9.3 -\u003e 9.11.29, 9.12.0 -\u003e 9.16.13, and versions BIND 9.9.3-S1 -\u003e 9.11.29-S1 and 9.16.8-S1 -\u003e 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -\u003e 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed.","modified":"2026-08-07T11:48:39.241481229Z","published":"2021-04-29T01:15:07.977Z","related":["ALSA-2021:4384","CGA-wg78-5x87-rmph","SUSE-SU-2021:1468-1","SUSE-SU-2021:1469-1","SUSE-SU-2021:1471-1","SUSE-SU-2021:14714-1","SUSE-SU-2021:1826-1","openSUSE-SU-2021:0668-1","openSUSE-SU-2021:1826-1","openSUSE-SU-2024:10650-1"],"database_specific":{"unresolved_ranges":[{"vendor_product":"siemens:sinec_infrastructure_network_services","cpes":["cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*"],"extracted_events":[{"fixed":"1.0.1.1"}],"source":"CPE_RANGE"},{"cpes":["cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*","cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"9.0"},{"last_affected":"9.0"},{"introduced":"10.0"},{"last_affected":"10.0"}],"source":"CPE_STRING","vendor_product":"debian:debian_linux"},{"source":"CPE_STRING","vendor_product":"fedoraproject:fedora","cpes":["cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*","cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"33"},{"last_affected":"33"},{"introduced":"34"},{"last_affected":"34"}]},{"source":"CPE_STRING","vendor_product":"isc:bind","cpes":["cpe:2.3:a:isc:bind:9.11.12:s1:*:*:supported_preview:*:*:*","cpe:2.3:a:isc:bind:9.11.21:s1:*:*:supported_preview:*:*:*","cpe:2.3:a:isc:bind:9.11.27:s1:*:*:supported_preview:*:*:*","cpe:2.3:a:isc:bind:9.11.29:s1:*:*:supported_preview:*:*:*","cpe:2.3:a:isc:bind:9.11.5:s3:*:*:supported_preview:*:*:*","cpe:2.3:a:isc:bind:9.11.5:s5:*:*:supported_preview:*:*:*","cpe:2.3:a:isc:bind:9.11.5:s6:*:*:supported_preview:*:*:*","cpe:2.3:a:isc:bind:9.11.7:s1:*:*:supported_preview:*:*:*","cpe:2.3:a:isc:bind:9.11.8:s1:*:*:supported_preview:*:*:*","cpe:2.3:a:isc:bind:9.16.11:s1:*:*:supported_preview:*:*:*","cpe:2.3:a:isc:bind:9.16.13:s1:*:*:supported_preview:*:*:*","cpe:2.3:a:isc:bind:9.16.8:s1:*:*:supported_preview:*:*:*","cpe:2.3:a:isc:bind:9.9.13:s1:*:*:supported_preview:*:*:*"],"extracted_events":[{"introduced":"9.9.13-s1"},{"last_affected":"9.9.13-s1"},{"introduced":"9.9.13-s1"},{"last_affected":"9.9.13-s1"},{"introduced":"9.11.5-s3"},{"last_affected":"9.11.5-s3"},{"introduced":"9.11.5-s3"},{"last_affected":"9.11.5-s3"},{"introduced":"9.11.5-s5"},{"last_affected":"9.11.5-s5"},{"introduced":"9.11.5-s5"},{"last_affected":"9.11.5-s5"},{"introduced":"9.11.5-s6"},{"last_affected":"9.11.5-s6"},{"introduced":"9.11.5-s6"},{"last_affected":"9.11.5-s6"},{"introduced":"9.11.7-s1"},{"last_affected":"9.11.7-s1"},{"introduced":"9.11.7-s1"},{"last_affected":"9.11.7-s1"},{"introduced":"9.11.8-s1"},{"last_affected":"9.11.8-s1"},{"introduced":"9.11.8-s1"},{"last_affected":"9.11.8-s1"},{"introduced":"9.11.12-s1"},{"last_affected":"9.11.12-s1"},{"introduced":"9.11.12-s1"},{"last_affected":"9.11.12-s1"},{"introduced":"9.11.21-s1"},{"last_affected":"9.11.21-s1"},{"introduced":"9.11.21-s1"},{"last_affected":"9.11.21-s1"},{"introduced":"9.11.27-s1"},{"last_affected":"9.11.27-s1"},{"introduced":"9.11.27-s1"},{"last_affected":"9.11.27-s1"},{"introduced":"9.11.29-s1"},{"last_affected":"9.11.29-s1"},{"introduced":"9.11.29-s1"},{"last_affected":"9.11.29-s1"},{"introduced":"9.16.8-s1"},{"last_affected":"9.16.8-s1"},{"introduced":"9.16.8-s1"},{"last_affected":"9.16.8-s1"},{"introduced":"9.16.11-s1"},{"last_affected":"9.16.11-s1"},{"introduced":"9.16.11-s1"},{"last_affected":"9.16.11-s1"},{"introduced":"9.16.13-s1"},{"last_affected":"9.16.13-s1"},{"introduced":"9.16.13-s1"},{"last_affected":"9.16.13-s1"}]}]},"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VEC2XG4Q2ODTN2C4CGXEIXU3EUTBMK7L/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDSRPCJQ7MZC6CENH5PO3VQOFI7VSWBE/"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2021/04/29/1"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2021/04/29/2"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2021/04/29/3"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2021/04/29/4"},{"type":"ADVISORY","url":"https://kb.isc.org/v1/docs/cve-2021-25214"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/05/msg00001.html"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20210521-0006/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2021/dsa-4909"},{"type":"FIX","url":"https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/isc-projects/bind9","events":[{"introduced":"bee549e53e9f1f23f6bc42c6b9d922b401cf15bd"},{"last_affected":"8fc2e36186691698d247ab040b83793a9189de73"},{"introduced":"d281b39456519db31c6213d010d30d99df8cf852"},{"fixed":"ac3f4eb88b9f1581d141458b99635bf2cb9db1ba"},{"introduced":"71a40862c0be867999867cd99e21c2266a5e452b"},{"fixed":"4469e3e6269d03d06286f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