{"answers":{"affected":"It affects 15 products.","exploited":"There is no known exploitation of CVE-2021-25214 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2021-25214 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 29 Apr 2021. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-25214 and fix it if it is affected.\n\nWhat it is: CVE-2021-25214 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 29 Apr 2021. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-25214 in the wild and no public exploit code.\n\nAffected product: Debian Debian Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2021-25214/ (Markdown: https://insights.sbomify.com/CVE-2021-25214/index.md)","id":"CVE-2021-25214","markdown":"https://insights.sbomify.com/CVE-2021-25214/index.md","name":"CVE-2021-25214","record":{"aliases":["ALPINE-CVE-2021-25214","ALSA-2021:4384","CLSA-2022-1643212135","DEBIAN-CVE-2021-25214","GHSA-pqmv-mqwc-wmr3","MGASA-2021-0275","RHSA-2021:3325","RHSA-2021:4384","RLSA-2021:4384","UBUNTU-CVE-2021-25214"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"DNS server software","requires_auth":"low_privilege","summary":"A remote attacker can cause the BIND DNS server to crash by sending a malformed IXFR request, resulting in a denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"isc","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"bind","vendor":"isc"},{"product":"active_iq_unified_manager","vendor":"netapp"},{"product":"aff_500f_firmware","vendor":"netapp"},{"product":"aff_a250_firmware","vendor":"netapp"},{"product":"cloud_backup","vendor":"netapp"},{"product":"h300e_firmware","vendor":"netapp"},{"product":"h300s_firmware","vendor":"netapp"},{"product":"h410s_firmware","vendor":"netapp"},{"product":"h500e_firmware","vendor":"netapp"},{"product":"h500s_firmware","vendor":"netapp"},{"product":"h700e_firmware","vendor":"netapp"},{"product":"h700s_firmware","vendor":"netapp"},{"product":"sinec_infrastructure_network_services","vendor":"siemens"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-617","name":"Reachable Assertion"}],"description":"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.","ecosystems":["AlmaLinux:8","Red Hat:enterprise_linux:7::client","Red Hat:enterprise_linux:7::computenode","Red Hat:enterprise_linux:7::server","Red Hat:enterprise_linux:7::workstation","Red Hat:enterprise_linux:8::appstream","Red Hat:enterprise_linux:8::baseos","Rocky Linux:8"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly","id":"CVE-2021-25214","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"debian:debian_linux","products":["debian:debian_linux","fedoraproject:fedora","isc:bind","netapp:active_iq_unified_manager","netapp:cloud_backup","netapp:h300e_firmware","netapp:h300s_firmware","netapp:h410s_firmware","netapp:h500e_firmware","netapp:h500s_firmware","netapp:h700e_firmware","netapp:h700s_firmware","siemens:sinec_infrastructure_network_services"],"type":"denial_of_service","year":"2021"},"n_packages":117,"n_references":11,"next":{"headline":"Denial of service in BIND9","id":"CVE-2021-25215"},"packages":[{"ecosystem":"AlmaLinux:8","fixed":["32:9.11.26-6.el8"],"introduced":["0"],"last_affected":[],"package":"bind","purl":"pkg:rpm/almalinux/bind","source":"ALSA-2021:4384"},{"ecosystem":"AlmaLinux:8","fixed":["32:9.11.26-6.el8"],"introduced":["0"],"last_affected":[],"package":"bind-chroot","purl":"pkg:rpm/almalinux/bind-chroot","source":"ALSA-2021:4384"},{"ecosystem":"AlmaLinux:8","fixed":["32:9.11.26-6.el8"],"introduced":["0"],"last_affected":[],"package":"bind-devel","purl":"pkg:rpm/almalinux/bind-devel","source":"ALSA-2021:4384"},{"ecosystem":"AlmaLinux:8","fixed":["32:9.11.26-6.el8"],"introduced":["0"],"last_affected":[],"package":"bind-libs","purl":"pkg:rpm/almalinux/bind-libs","source":"ALSA-2021:4384"},{"ecosystem":"AlmaLinux:8","fixed":["32:9.11.26-6.el8"],"introduced":["0"],"last_affected":[],"package":"bind-libs-lite","purl":"pkg:rpm/almalinux/bind-libs-lite","source":"ALSA-2021:4384"},{"ecosystem":"AlmaLinux:8","fixed":["32:9.11.26-6.el8"],"introduced":["0"],"last_affected":[],"package":"bind-license","purl":"pkg:rpm/almalinux/bind-license","source":"ALSA-2021:4384"},{"ecosystem":"AlmaLinux:8","fixed":["32:9.11.26-6.el8"],"introduced":["0"],"last_affected":[],"package":"bind-lite-devel","purl":"pkg:rpm/almalinux/bind-lite-devel","source":"ALSA-2021:4384"},{"ecosystem":"AlmaLinux:8","fixed":["32:9.11.26-6.el8"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11","purl":"pkg:rpm/almalinux/bind-pkcs11","source":"ALSA-2021:4384"},{"ecosystem":"AlmaLinux:8","fixed":["32:9.11.26-6.el8"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11-devel","purl":"pkg:rpm/almalinux/bind-pkcs11-devel","source":"ALSA-2021:4384"},{"ecosystem":"AlmaLinux:8","fixed":["32:9.11.26-6.el8"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11-libs","purl":"pkg:rpm/almalinux/bind-pkcs11-libs","source":"ALSA-2021:4384"},{"ecosystem":"AlmaLinux:8","fixed":["32:9.11.26-6.el8"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11-utils","purl":"pkg:rpm/almalinux/bind-pkcs11-utils","source":"ALSA-2021:4384"},{"ecosystem":"AlmaLinux:8","fixed":["32:9.11.26-6.el8"],"introduced":["0"],"last_affected":[],"package":"bind-sdb","purl":"pkg:rpm/almalinux/bind-sdb","source":"ALSA-2021:4384"},{"ecosystem":"AlmaLinux:8","fixed":["32:9.11.26-6.el8"],"introduced":["0"],"last_affected":[],"package":"bind-sdb-chroot","purl":"pkg:rpm/almalinux/bind-sdb-chroot","source":"ALSA-2021:4384"},{"ecosystem":"AlmaLinux:8","fixed":["32:9.11.26-6.el8"],"introduced":["0"],"last_affected":[],"package":"bind-utils","purl":"pkg:rpm/almalinux/bind-utils","source":"ALSA-2021:4384"},{"ecosystem":"AlmaLinux:8","fixed":["32:9.11.26-6.el8"],"introduced":["0"],"last_affected":[],"package":"python3-bind","purl":"pkg:rpm/almalinux/python3-bind","source":"ALSA-2021:4384"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind","purl":"pkg:rpm/redhat/bind","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-chroot","purl":"pkg:rpm/redhat/bind-chroot","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-debuginfo","purl":"pkg:rpm/redhat/bind-debuginfo","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-devel","purl":"pkg:rpm/redhat/bind-devel","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-export-devel","purl":"pkg:rpm/redhat/bind-export-devel","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-export-libs","purl":"pkg:rpm/redhat/bind-export-libs","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-libs","purl":"pkg:rpm/redhat/bind-libs","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-libs-lite","purl":"pkg:rpm/redhat/bind-libs-lite","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-license","purl":"pkg:rpm/redhat/bind-license","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-lite-devel","purl":"pkg:rpm/redhat/bind-lite-devel","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11","purl":"pkg:rpm/redhat/bind-pkcs11","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11-devel","purl":"pkg:rpm/redhat/bind-pkcs11-devel","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11-libs","purl":"pkg:rpm/redhat/bind-pkcs11-libs","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11-utils","purl":"pkg:rpm/redhat/bind-pkcs11-utils","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-sdb","purl":"pkg:rpm/redhat/bind-sdb","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-sdb-chroot","purl":"pkg:rpm/redhat/bind-sdb-chroot","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-utils","purl":"pkg:rpm/redhat/bind-utils","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind","purl":"pkg:rpm/redhat/bind","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-chroot","purl":"pkg:rpm/redhat/bind-chroot","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-debuginfo","purl":"pkg:rpm/redhat/bind-debuginfo","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-devel","purl":"pkg:rpm/redhat/bind-devel","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-export-devel","purl":"pkg:rpm/redhat/bind-export-devel","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-lite-devel","purl":"pkg:rpm/redhat/bind-lite-devel","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11","purl":"pkg:rpm/redhat/bind-pkcs11","source":"RHSA-2021:3325"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["32:9.11.4-26.P2.el7_9.7"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11-devel","purl":"pkg:rpm/redhat/bind-pkcs11-devel","source":"RHSA-2021:3325"}],"prev":{"headline":"SQL injection in n/a","id":"CVE-2021-25213"},"products":["BIND9"],"published":"2021-04-29","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"sources":[{"class":"attribution","licence":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-09-17","vendors":["ISC"]},"summary":"A remote attacker can cause the BIND DNS server to crash by sending a malformed IXFR request, resulting in a denial of service.","url":"https://insights.sbomify.com/CVE-2021-25214/"}