{"answers":{"affected":"It affects 13 products.","exploited":"There is no known exploitation of CVE-2023-50387 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-50387 is a high-severity denial of service vulnerability in Fedoraproject Fedora, 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-2023-50387 and fix it if it is affected.\n\nWhat it is: CVE-2023-50387 is a high-severity denial of service vulnerability in Fedoraproject Fedora, 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-2023-50387 in the wild and no public exploit code.\n\nAffected product: Fedoraproject Fedora. 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-2023-50387/ (Markdown: https://insights.sbomify.com/CVE-2023-50387/index.md)","id":"CVE-2023-50387","markdown":"https://insights.sbomify.com/CVE-2023-50387/index.md","name":"CVE-2023-50387","record":{"aliases":["ALPINE-CVE-2023-50387","AZL-34350","AZL-34419","AZL-34440","AZL-34559","AZL-35328","BELL-CVE-2023-50387","CLEANSTART-2026-LD91251","CLSA-2024-1722529717","DEBIAN-CVE-2023-50387","GHSA-8459-gg55-8qjj","UBUNTU-CVE-2023-50387","openSUSE-SU-2024:13680-1","openSUSE-SU-2024:13707-1"],"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 CPU exhaustion in DNS resolvers by sending crafted DNSSEC responses, leading to denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"fedora","vendor":"fedoraproject"},{"product":"bind","vendor":"isc"},{"product":"windows_server_2008","vendor":"microsoft"},{"product":"windows_server_2012","vendor":"microsoft"},{"product":"windows_server_2016","vendor":"microsoft"},{"product":"windows_server_2019","vendor":"microsoft"},{"product":"windows_server_2022","vendor":"microsoft"},{"product":"windows_server_2022_23h2","vendor":"microsoft"},{"product":"knot_resolver","vendor":"nic"},{"product":"unbound","vendor":"nlnetlabs"},{"product":"recursor","vendor":"powerdns"},{"product":"enterprise_linux","vendor":"redhat"},{"product":"dnsmasq","vendor":"thekelleys"}],"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:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the \"KeyTrap\" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.","ecosystems":["openSUSE:Tumbleweed"],"exploits":{"exploitdb":0,"first_seen":"2024-02-18","github_poc":3,"max_poc_stars":44,"metasploit":0,"nuclei":0,"refs":[{"date":"2024-02-18T21:50:04Z","kind":"github_poc","ref":"https://github.com/knqyf263/CVE-2023-50387","stars":44,"title":"KeyTrap (DNSSEC)"},{"date":"2024-05-23T14:41:50Z","kind":"github_poc","ref":"https://github.com/Meirelez/SSR-DNSSEC","stars":0,"title":"In this repository you can find the files used to try to produce a POC for the CVE-2023-50387"},{"date":"2024-12-04T11:27:11Z","kind":"github_poc","ref":"https://github.com/Pablodiz/CVE-2023-50387","stars":0,"title":null}],"tier":"poc_unverified"},"has_fix":true,"headline":"Denial of service in n/a","id":"CVE-2023-50387","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"fedoraproject:fedora","products":["fedoraproject:fedora","isc:bind","microsoft:windows_server_2008","microsoft:windows_server_2012","microsoft:windows_server_2016","microsoft:windows_server_2019","microsoft:windows_server_2022","microsoft:windows_server_2022_23h2","nlnetlabs:unbound","powerdns:recursor","redhat:enterprise_linux"],"type":"denial_of_service","year":"2023"},"n_packages":2,"n_references":30,"next":{"headline":"SQL Injection Remote Code Execution Vulnerability","id":"CVE-2023-50395"},"packages":[{"ecosystem":"openSUSE:Tumbleweed","fixed":["2.90-1.1"],"introduced":["0"],"last_affected":[],"package":"dnsmasq","purl":"pkg:rpm/opensuse/dnsmasq\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2024:13707-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["5.0.2-1.1"],"introduced":["0"],"last_affected":[],"package":"pdns-recursor","purl":"pkg:rpm/opensuse/pdns-recursor\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2024:13680-1"}],"prev":{"headline":"Apache Solr: Backup/Restore APIs allow for deployment of executables in malicious ConfigSets","id":"CVE-2023-50386"},"products":["n/a"],"published":"2024-02-14","related":[{"cvss_score":9.8,"headline":"PHP-CGI OS Command Injection","id":"CVE-2024-4577","kev_date_added":"2024-06-12","published":"2024-06-09"},{"cvss_score":9.8,"headline":"Grafana Authentication Bypass","id":"CVE-2021-39226","kev_date_added":"2022-08-25","published":"2021-10-05"},{"cvss_score":9.8,"headline":"VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow","id":"CVE-2019-5544","kev_date_added":"2021-11-03","published":"2019-12-06"},{"cvss_score":9.6,"headline":"Google Chromium V8 Type Confusion","id":"CVE-2024-4947","kev_date_added":"2024-05-20","published":"2024-05-15"},{"cvss_score":9.6,"headline":"Google Chromium Visuals Use-After-Free","id":"CVE-2024-4671","kev_date_added":"2024-05-13","published":"2024-05-09"},{"cvss_score":9.6,"headline":"Google Chromium Mojo Insufficient Data Validation","id":"CVE-2022-3075","kev_date_added":"2022-09-08","published":"2022-09-26"},{"cvss_score":9.6,"headline":"Google Chromium Indexed DB API Use-After-Free","id":"CVE-2021-30633","kev_date_added":"2021-11-03","published":"2021-10-08"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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 CPU exhaustion in DNS resolvers by sending crafted DNSSEC responses, leading to denial of service.","url":"https://insights.sbomify.com/CVE-2023-50387/"}