{"answers":{"affected":"It affects 12 products.","exploited":"There is no known exploitation of CVE-2016-4953 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2016-4953 is a high-severity denial of service vulnerability in Ntp Ntp, published on 5 Jul 2016. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2016-4953 and fix it if it is affected.\n\nWhat it is: CVE-2016-4953 is a high-severity denial of service vulnerability in Ntp Ntp, published on 5 Jul 2016. 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-2016-4953 in the wild and no public exploit code.\n\nAffected product: Ntp Ntp. 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-2016-4953/ (Markdown: https://insights.sbomify.com/CVE-2016-4953/index.md)","id":"CVE-2016-4953","markdown":"https://insights.sbomify.com/CVE-2016-4953/index.md","name":"CVE-2016-4953","record":{"aliases":["DEBIAN-CVE-2016-4953","GHSA-26jw-7mv6-89rj"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"NTP daemon","requires_auth":"none","summary":"Remote attackers can cause a denial of service in NTP by sending spoofed crypto-NAK packets with incorrect authentication data.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"ntp","vendor":"ntp"},{"product":"leap","vendor":"opensuse"},{"product":"opensuse","vendor":"opensuse"},{"product":"solaris","vendor":"oracle"},{"product":"simatic_net_cp_443-1_opc_ua_firmware","vendor":"siemens"},{"product":"tim_4r-ie_dnp3_firmware","vendor":"siemens"},{"product":"tim_4r-ie_firmware","vendor":"siemens"},{"product":"linux_enterprise_desktop","vendor":"suse"},{"product":"linux_enterprise_server","vendor":"suse"},{"product":"manager","vendor":"suse"},{"product":"manager_proxy","vendor":"suse"},{"product":"openstack_cloud","vendor":"suse"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","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-287","name":"Improper Authentication"}],"description":"ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (ephemeral-association demobilization) by sending a spoofed crypto-NAK packet with incorrect authentication data at a certain time.","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":"Denial of service in n/a","id":"CVE-2016-4953","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"ntp:ntp","products":["ntp:ntp","opensuse:leap","opensuse:opensuse","oracle:solaris","suse:linux_enterprise_desktop","suse:linux_enterprise_server"],"type":"denial_of_service","year":"2016"},"n_packages":0,"n_references":32,"next":{"headline":"Race condition in n/a","id":"CVE-2016-4954"},"packages":[],"prev":{"headline":"Denial of service in n/a","id":"CVE-2016-4952"},"products":["n/a"],"published":"2016-07-05","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2018-12327","kev_date_added":null,"published":"2018-06-20"},{"cvss_score":8.8,"headline":"Memory corruption in n/a","id":"CVE-2017-6460","kev_date_added":null,"published":"2017-03-27"},{"cvss_score":8.1,"headline":"Other in n/a","id":"CVE-2019-11331","kev_date_added":null,"published":"2019-04-18"},{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2017-6451","kev_date_added":null,"published":"2017-03-27"},{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2017-6452","kev_date_added":null,"published":"2017-03-27"},{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2017-6462","kev_date_added":null,"published":"2017-03-27"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2015-7978","kev_date_added":null,"published":"2017-01-30"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-06","vendors":["n/a"]},"summary":"Remote attackers can cause a denial of service in NTP by sending spoofed crypto-NAK packets with incorrect authentication data.","url":"https://insights.sbomify.com/CVE-2016-4953/"}