{"answers":{"affected":"It affects 29 products.","exploited":"There is no known exploitation of CVE-2017-18017 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2017-18017 is a critical use after free vulnerability in Canonical Ubuntu Linux, published on 3 Jan 2018. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2017-18017 and fix it if it is affected.\n\nWhat it is: CVE-2017-18017 is a critical use after free vulnerability in Canonical Ubuntu Linux, published on 3 Jan 2018. 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-2017-18017 in the wild and no public exploit code.\n\nAffected product: Canonical Ubuntu 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-2017-18017/ (Markdown: https://insights.sbomify.com/CVE-2017-18017/index.md)","id":"CVE-2017-18017","markdown":"https://insights.sbomify.com/CVE-2017-18017/index.md","name":"CVE-2017-18017","record":{"aliases":["DEBIAN-CVE-2017-18017","GHSA-3fj5-q6p4-25m2","UBUNTU-CVE-2017-18017"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service","code_execution"],"network_reachable":"yes","non_default_config":true,"product_category":"Linux kernel netfilter","requires_auth":"none","summary":"Remote attackers can trigger a use-after-free in the Linux kernel TCPMSS module, causing denial of service or potential code execution.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"eos","vendor":"arista"},{"product":"ubuntu_linux","vendor":"canonical"},{"product":"debian_linux","vendor":"debian"},{"product":"arx","vendor":"f5"},{"product":"linux_kernel","vendor":"linux"},{"product":"cloud_magnum_orchestration","vendor":"openstack"},{"product":"leap","vendor":"opensuse"},{"product":"enterprise_linux_desktop","vendor":"redhat"},{"product":"enterprise_linux_eus","vendor":"redhat"},{"product":"enterprise_linux_for_real_time","vendor":"redhat"},{"product":"enterprise_linux_for_real_time_for_nfv","vendor":"redhat"},{"product":"enterprise_linux_server","vendor":"redhat"},{"product":"enterprise_linux_server_aus","vendor":"redhat"},{"product":"enterprise_linux_server_tus","vendor":"redhat"},{"product":"enterprise_linux_workstation","vendor":"redhat"},{"product":"mrg_realtime","vendor":"redhat"},{"product":"caas_platform","vendor":"suse"},{"product":"linux_enterprise_debuginfo","vendor":"suse"},{"product":"linux_enterprise_desktop","vendor":"suse"},{"product":"linux_enterprise_high_availability","vendor":"suse"},{"product":"linux_enterprise_high_availability_extension","vendor":"suse"},{"product":"linux_enterprise_live_patching","vendor":"suse"},{"product":"linux_enterprise_module_for_public_cloud","vendor":"suse"},{"product":"linux_enterprise_point_of_sale","vendor":"suse"},{"product":"linux_enterprise_real_time_extension","vendor":"suse"},{"product":"linux_enterprise_server","vendor":"suse"},{"product":"linux_enterprise_software_development_kit","vendor":"suse"},{"product":"linux_enterprise_workstation_extension","vendor":"suse"},{"product":"openstack_cloud","vendor":"suse"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel before 4.11, and 4.9.x before 4.9.36, allows remote attackers to cause a denial of service (use-after-free and memory corruption) or possibly have unspecified other impact by leveraging the presence of xt_TCPMSS in an iptables action.","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":"Use after free in n/a","id":"CVE-2017-18017","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"canonical:ubuntu_linux","products":["canonical:ubuntu_linux","debian:debian_linux","linux:linux_kernel","opensuse:leap","redhat:enterprise_linux_desktop","redhat:enterprise_linux_eus","redhat:enterprise_linux_server","redhat:enterprise_linux_server_aus","redhat:enterprise_linux_server_tus","redhat:enterprise_linux_workstation","suse:linux_enterprise_debuginfo","suse:linux_enterprise_desktop","suse:linux_enterprise_real_time_extension","suse:linux_enterprise_server","suse:linux_enterprise_software_development_kit","suse:linux_enterprise_workstation_extension"],"type":"use_after_free","year":"2017"},"n_packages":0,"n_references":32,"next":{"headline":"Race condition in n/a","id":"CVE-2017-18018"},"packages":[],"prev":{"headline":"Security feature bypass in n/a","id":"CVE-2017-18016"},"products":["n/a"],"published":"2018-01-03","related":[{"cvss_score":6.9,"headline":"Arista Extensible Operating System Incomplete Comparison with Missing Factors","id":"CVE-2026-7473","kev_date_added":"2026-06-09","published":"2026-06-05"},{"cvss_score":10,"headline":"Privilege escalation in n/a","id":"CVE-2015-8236","kev_date_added":null,"published":"2015-11-19"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2020-10188","kev_date_added":null,"published":"2020-03-06"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2017-14491","kev_date_added":null,"published":"2017-10-02"},{"cvss_score":9.3,"headline":"Privilege escalation in Arista EOS","id":"CVE-2023-24509","kev_date_added":null,"published":"2023-04-13"},{"cvss_score":9.3,"headline":"Information disclosure in n/a","id":"CVE-2015-5165","kev_date_added":null,"published":"2015-08-12"}],"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":"2025-01-03","vendors":["n/a"]},"summary":"Remote attackers can trigger a use-after-free in the Linux kernel TCPMSS module, causing denial of service or potential code execution.","url":"https://insights.sbomify.com/CVE-2017-18017/"}