{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2023-6516 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2023-6516 is a high-severity denial of service vulnerability in Isc Bind, published on 13 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-6516 and fix it if it is affected.\n\nWhat it is: CVE-2023-6516 is a high-severity denial of service vulnerability in Isc Bind, published on 13 Feb 2024. 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-2023-6516 in the wild and no public exploit code.\n\nAffected product: Isc Bind. 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-2023-6516/ (Markdown: https://insights.sbomify.com/CVE-2023-6516/index.md)","id":"CVE-2023-6516","markdown":"https://insights.sbomify.com/CVE-2023-6516/index.md","name":"CVE-2023-6516","record":{"aliases":["ALPINE-CVE-2023-6516","AZL-34561","CLSA-2026-1786523775","CLSA-2026-1786525602","CLSA-2026-1787221736","CLSA-2026-1787401059","CLSA-2026-1787645299","CLSA-2026-1787659784","CLSA-2026-1787670751","CLSA-2026-1788000191","CLSA-2026-1789036496","DEBIAN-CVE-2023-6516","GHSA-8mxm-4gjm-vrc7","UBUNTU-CVE-2023-6516"],"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":"Attackers can cause a denial of service in BIND by triggering recursive queries that exhaust memory, affecting DNS server availability.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"isc","cpe":[{"product":"bind","vendor":"isc"},{"product":"active_iq_unified_manager","vendor":"netapp"}],"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-770","name":"Allocation of Resources Without Limits or Throttling"},{"id":"CWE-789","name":"Memory Allocation with Excessive Size Value"}],"description":"To keep its cache database efficient, `named` running as a recursive resolver occasionally attempts to clean up the database. It uses several methods, including some that are asynchronous: a small chunk of memory pointing to the cache element that can be cleaned up is first allocated and then queued for later processing. It was discovered that if the resolver is continuously processing query patterns triggering this type of cache-database maintenance, `named` may not be able to handle the cleanup events in a timely manner. This in turn enables the list of queued cleanup events to grow infinitely large over time, allowing the configured `max-cache-size` limit to be significantly exceeded.\nThis issue affects BIND 9 versions 9.16.0 through 9.16.45 and 9.16.8-S1 through 9.16.45-S1.","ecosystems":[],"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":"Specific recursive query patterns may lead to an out-of-memory condition","id":"CVE-2023-6516","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"isc:bind","products":["isc:bind","netapp:active_iq_unified_manager"],"type":"denial_of_service","year":"2023"},"n_packages":0,"n_references":5,"next":{"headline":"Seeing the SMS Verification Code in Mia Technology's Mia-Med","id":"CVE-2023-6517"},"packages":[],"prev":{"headline":"IDOR in Mia Technology's Mia-Med","id":"CVE-2023-6515"},"products":["BIND 9"],"published":"2024-02-13","related":[{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2008-0122","kev_date_added":null,"published":"2008-01-16"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2001-0010","kev_date_added":null,"published":"2001-05-07"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2001-0011","kev_date_added":null,"published":"2001-05-07"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2001-0013","kev_date_added":null,"published":"2001-05-07"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2000-1029","kev_date_added":null,"published":"2000-11-29"},{"cvss_score":10,"headline":"Denial of service in n/a","id":"CVE-1999-0837","kev_date_added":null,"published":"2000-01-04"},{"cvss_score":8.5,"headline":"Denial of service in n/a","id":"CVE-2012-1667","kev_date_added":null,"published":"2012-06-05"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-02-13","vendors":["ISC"]},"summary":"Attackers can cause a denial of service in BIND by triggering recursive queries that exhaust memory, affecting DNS server availability.","url":"https://insights.sbomify.com/CVE-2023-6516/"}