{"answers":{"affected":"It affects 16 products.","exploited":"There is no known exploitation of CVE-2021-25215 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2021-25215 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 29 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-25215 and fix it if it is affected.\n\nWhat it is: CVE-2021-25215 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 29 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-25215 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-2021-25215/ (Markdown: https://insights.sbomify.com/CVE-2021-25215/index.md)","id":"CVE-2021-25215","markdown":"https://insights.sbomify.com/CVE-2021-25215/index.md","name":"CVE-2021-25215","record":{"aliases":["ALPINE-CVE-2021-25215","DEBIAN-CVE-2021-25215","GHSA-r4mp-379r-9756","RHSA-2021:1468","RHSA-2021:1469","RHSA-2021:1475","RHSA-2021:1476","RHSA-2021:1477","RHSA-2021:1478","RHSA-2021:1479","RHSA-2021:1989","RHSA-2021:2024","RHSA-2021:2028","RLSA-2021:1989","UBUNTU-CVE-2021-25215"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"BIND DNS server","requires_auth":"none","summary":"Remote attackers can cause the BIND DNS server to crash by sending specific queries for DNAME records, 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":"500f_firmware","vendor":"netapp"},{"product":"a250_firmware","vendor":"netapp"},{"product":"active_iq_unified_manager","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":"tekelec_platform_distribution","vendor":"oracle"},{"product":"sinec_infrastructure_network_services","vendor":"siemens"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-617","name":"Reachable Assertion"}],"description":"In BIND 9.0.0 -\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 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 query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9.","ecosystems":["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","Red Hat:rhel_aus:7.2::server","Red Hat:rhel_aus:7.3::server","Red Hat:rhel_aus:7.4::server","Red Hat:rhel_e4s:7.4::server","Red Hat:rhel_els:6","Red Hat:rhel_eus:7.6::computenode","Red Hat:rhel_eus:7.6::server","Red Hat:rhel_eus:7.7::computenode","Red Hat:rhel_eus:7.7::server","Red Hat:rhel_eus:8.1::appstream","Red Hat:rhel_eus:8.1::baseos","Red Hat:rhel_eus:8.2::appstream","Red Hat:rhel_eus:8.2::baseos","Red Hat:rhel_tus:7.4::server","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":"Denial of service in BIND9","id":"CVE-2021-25215","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":324,"n_references":12,"next":{"headline":"A second vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attack","id":"CVE-2021-25216"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind","purl":"pkg:rpm/redhat/bind","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-chroot","purl":"pkg:rpm/redhat/bind-chroot","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-debuginfo","purl":"pkg:rpm/redhat/bind-debuginfo","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-devel","purl":"pkg:rpm/redhat/bind-devel","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-export-devel","purl":"pkg:rpm/redhat/bind-export-devel","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-export-libs","purl":"pkg:rpm/redhat/bind-export-libs","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-libs","purl":"pkg:rpm/redhat/bind-libs","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-libs-lite","purl":"pkg:rpm/redhat/bind-libs-lite","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-license","purl":"pkg:rpm/redhat/bind-license","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-lite-devel","purl":"pkg:rpm/redhat/bind-lite-devel","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11","purl":"pkg:rpm/redhat/bind-pkcs11","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11-devel","purl":"pkg:rpm/redhat/bind-pkcs11-devel","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11-libs","purl":"pkg:rpm/redhat/bind-pkcs11-libs","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11-utils","purl":"pkg:rpm/redhat/bind-pkcs11-utils","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-sdb","purl":"pkg:rpm/redhat/bind-sdb","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-sdb-chroot","purl":"pkg:rpm/redhat/bind-sdb-chroot","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-utils","purl":"pkg:rpm/redhat/bind-utils","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind","purl":"pkg:rpm/redhat/bind","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-chroot","purl":"pkg:rpm/redhat/bind-chroot","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-debuginfo","purl":"pkg:rpm/redhat/bind-debuginfo","source":"RHSA-2021:1469"},{"ecosystem":"Red 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Hat:enterprise_linux:7::computenode","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-sdb-chroot","purl":"pkg:rpm/redhat/bind-sdb-chroot","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind","purl":"pkg:rpm/redhat/bind","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-chroot","purl":"pkg:rpm/redhat/bind-chroot","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-debuginfo","purl":"pkg:rpm/redhat/bind-debuginfo","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-devel","purl":"pkg:rpm/redhat/bind-devel","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-export-devel","purl":"pkg:rpm/redhat/bind-export-devel","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-export-libs","purl":"pkg:rpm/redhat/bind-export-libs","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-libs","purl":"pkg:rpm/redhat/bind-libs","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-libs-lite","purl":"pkg:rpm/redhat/bind-libs-lite","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-license","purl":"pkg:rpm/redhat/bind-license","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-lite-devel","purl":"pkg:rpm/redhat/bind-lite-devel","source":"RHSA-2021:1469"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["32:9.11.4-26.P2.el7_9.5"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11","purl":"pkg:rpm/redhat/bind-pkcs11","source":"RHSA-2021:1469"}],"prev":{"headline":"A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly","id":"CVE-2021-25214"},"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":"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":"2024-09-16","vendors":["ISC"]},"summary":"Remote attackers can cause the BIND DNS server to crash by sending specific queries for DNAME records, resulting in a denial of service.","url":"https://insights.sbomify.com/CVE-2021-25215/"}