{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2020-8616 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2020-8616 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 19 May 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-8616 and fix it if it is affected.\n\nWhat it is: CVE-2020-8616 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 19 May 2020. 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-2020-8616 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-2020-8616/ (Markdown: https://insights.sbomify.com/CVE-2020-8616/index.md)","id":"CVE-2020-8616","markdown":"https://insights.sbomify.com/CVE-2020-8616/index.md","name":"CVE-2020-8616","record":{"aliases":["ALPINE-CVE-2020-8616","DEBIAN-CVE-2020-8616","GHSA-rc96-hg8v-6p4g","RHSA-2020:3272","UBUNTU-CVE-2020-8616"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"BIND DNS server","requires_auth":"none","summary":"Attackers can degrade performance or launch reflection attacks by causing a recursing BIND server to issue excessive fetches via crafted referrals.","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":"bind","vendor":"isc"}],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"A malicious actor who intentionally exploits this lack of effective limitation on the number of fetches performed when processing referrals can, through the use of specially crafted referrals, cause a recursing server to issue a very large number of fetches in an attempt to process the referral. This has at least two potential effects: The performance of the recursing server can potentially be degraded by the additional work required to perform these fetches, and The attacker can exploit this behavior to use the recursing server as a reflector in a reflection attack with a high amplification factor.","ecosystems":["Red Hat:rhel_eus:7.7::computenode","Red Hat:rhel_eus:7.7::server"],"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":"BIND does not sufficiently limit the number of fetches performed when processing referrals","id":"CVE-2020-8616","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"debian:debian_linux","products":["debian:debian_linux","isc:bind"],"type":"denial_of_service","year":"2020"},"n_packages":34,"n_references":13,"next":{"headline":"A logic error in code which checks TSIG validity can be used to trigger an assertion failure in tsig.c","id":"CVE-2020-8617"},"packages":[{"ecosystem":"Red Hat:rhel_eus:7.7::computenode","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind","purl":"pkg:rpm/redhat/bind","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::computenode","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-chroot","purl":"pkg:rpm/redhat/bind-chroot","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::computenode","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-debuginfo","purl":"pkg:rpm/redhat/bind-debuginfo","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::computenode","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-devel","purl":"pkg:rpm/redhat/bind-devel","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::computenode","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-export-devel","purl":"pkg:rpm/redhat/bind-export-devel","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::computenode","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-export-libs","purl":"pkg:rpm/redhat/bind-export-libs","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::computenode","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-libs","purl":"pkg:rpm/redhat/bind-libs","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::computenode","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-libs-lite","purl":"pkg:rpm/redhat/bind-libs-lite","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::computenode","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-license","purl":"pkg:rpm/redhat/bind-license","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::computenode","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-lite-devel","purl":"pkg:rpm/redhat/bind-lite-devel","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::computenode","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11","purl":"pkg:rpm/redhat/bind-pkcs11","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::computenode","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11-devel","purl":"pkg:rpm/redhat/bind-pkcs11-devel","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::computenode","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11-libs","purl":"pkg:rpm/redhat/bind-pkcs11-libs","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::computenode","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11-utils","purl":"pkg:rpm/redhat/bind-pkcs11-utils","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::computenode","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-sdb","purl":"pkg:rpm/redhat/bind-sdb","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::computenode","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-sdb-chroot","purl":"pkg:rpm/redhat/bind-sdb-chroot","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::computenode","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-utils","purl":"pkg:rpm/redhat/bind-utils","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::server","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind","purl":"pkg:rpm/redhat/bind","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::server","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-chroot","purl":"pkg:rpm/redhat/bind-chroot","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::server","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-debuginfo","purl":"pkg:rpm/redhat/bind-debuginfo","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::server","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-devel","purl":"pkg:rpm/redhat/bind-devel","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::server","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-export-devel","purl":"pkg:rpm/redhat/bind-export-devel","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::server","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-export-libs","purl":"pkg:rpm/redhat/bind-export-libs","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::server","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-libs","purl":"pkg:rpm/redhat/bind-libs","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::server","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-libs-lite","purl":"pkg:rpm/redhat/bind-libs-lite","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::server","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-license","purl":"pkg:rpm/redhat/bind-license","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::server","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-lite-devel","purl":"pkg:rpm/redhat/bind-lite-devel","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::server","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11","purl":"pkg:rpm/redhat/bind-pkcs11","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::server","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11-devel","purl":"pkg:rpm/redhat/bind-pkcs11-devel","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::server","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11-libs","purl":"pkg:rpm/redhat/bind-pkcs11-libs","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::server","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-pkcs11-utils","purl":"pkg:rpm/redhat/bind-pkcs11-utils","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::server","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-sdb","purl":"pkg:rpm/redhat/bind-sdb","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::server","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-sdb-chroot","purl":"pkg:rpm/redhat/bind-sdb-chroot","source":"RHSA-2020:3272"},{"ecosystem":"Red Hat:rhel_eus:7.7::server","fixed":["32:9.11.4-9.P2.el7_7.2"],"introduced":["0"],"last_affected":[],"package":"bind-utils","purl":"pkg:rpm/redhat/bind-utils","source":"RHSA-2020:3272"}],"prev":{"headline":"Cross-site request forgery in n/a","id":"CVE-2020-8615"},"products":["BIND9"],"published":"2020-05-19","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":"Attackers can degrade performance or launch reflection attacks by causing a recursing BIND server to issue excessive fetches via crafted referrals.","url":"https://insights.sbomify.com/CVE-2020-8616/"}