{"answers":{"affected":"It affects 8 products.","exploited":"There is no known exploitation of CVE-2023-50868 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-50868 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 14 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-2023-50868 and fix it if it is affected.\n\nWhat it is: CVE-2023-50868 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 14 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-2023-50868 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-2023-50868/ (Markdown: https://insights.sbomify.com/CVE-2023-50868/index.md)","id":"CVE-2023-50868","markdown":"https://insights.sbomify.com/CVE-2023-50868/index.md","name":"CVE-2023-50868","record":{"aliases":["ALPINE-CVE-2023-50868","AZL-34441","AZL-35329","BELL-CVE-2023-50868","CLEANSTART-2026-RU38296","CLSA-2024-1729513208","CLSA-2025-1756230743","CLSA-2025-1765282338","DEBIAN-CVE-2023-50868","GHSA-pv4h-p8jr-6cv2","UBUNTU-CVE-2023-50868"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"DNS resolver software","requires_auth":"none","summary":"Remote attackers can cause denial of service via CPU exhaustion in DNSSEC NSEC3 processing, affecting DNS resolvers.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"bind","vendor":"isc"},{"product":"active_iq_unified_manager","vendor":"netapp"},{"product":"bootstrap_os","vendor":"netapp"},{"product":"hci_baseboard_management_controller","vendor":"netapp"},{"product":"recursor","vendor":"powerdns"},{"product":"enterprise_linux","vendor":"redhat"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the \"NSEC3\" issue. The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2024-03-19","github_poc":1,"max_poc_stars":6,"metasploit":0,"nuclei":0,"refs":[{"date":"2024-03-19T16:13:14Z","kind":"github_poc","ref":"https://github.com/Goethe-Universitat-Cybersecurity/NSEC3-Encloser-Attack","stars":6,"title":"This project generates DNS zonefiles with custom NSEC3 parameters to reproduce and evaluate the attacks in CVE-2023-50868."}],"tier":"poc_unverified"},"has_fix":true,"headline":"Denial of service in n/a","id":"CVE-2023-50868","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:bootstrap_os","powerdns:recursor","redhat:enterprise_linux"],"type":"denial_of_service","year":"2023"},"n_packages":0,"n_references":24,"next":{"headline":"Cross-site request forgery in TeamCity","id":"CVE-2023-50870"},"packages":[],"prev":{"headline":"Travel Website v1.0 - Multiple Unauthenticated SQL Injections (SQLi)","id":"CVE-2023-50867"},"products":["n/a"],"published":"2024-02-14","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":"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-11-04","vendors":["n/a"]},"summary":"Remote attackers can cause denial of service via CPU exhaustion in DNSSEC NSEC3 processing, affecting DNS resolvers.","url":"https://insights.sbomify.com/CVE-2023-50868/"}