{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2018-8020 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2018-8020 is a high-severity authentication bypass vulnerability in Debian Debian Linux, published on 31 Jul 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-2018-8020 and fix it if it is affected.\n\nWhat it is: CVE-2018-8020 is a high-severity authentication bypass vulnerability in Debian Debian Linux, published on 31 Jul 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-2018-8020 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-2018-8020/ (Markdown: https://insights.sbomify.com/CVE-2018-8020/index.md)","id":"CVE-2018-8020","markdown":"https://insights.sbomify.com/CVE-2018-8020/index.md","name":"CVE-2018-8020","record":{"aliases":["DEBIAN-CVE-2018-8020","GHSA-r94v-7v68-9rjq","UBUNTU-CVE-2018-8020"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Apache Tomcat Native","requires_auth":"none","summary":"Attackers can authenticate using revoked client certificates in mutual TLS setups due to improper OCSP response validation in Apache Tomcat Native.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"tomcat_native","vendor":"apache"},{"product":"debian_linux","vendor":"debian"}],"cvss":{"score":7.4,"severity":"high","source":"nvd","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.0"},"cwes":[{"id":"CWE-295","name":"Improper Certificate Validation"}],"description":"Apache Tomcat Native 1.2.0 to 1.2.16 and 1.1.23 to 1.1.34 has a flaw that does not properly check OCSP pre-produced responses, which are lists (multiple entries) of certificate statuses. Subsequently, revoked client certificates may not be properly identified, allowing for users to authenticate with revoked certificates to connections that require mutual TLS. Users not using OCSP checks are not affected by this vulnerability.","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":"Auth bypass in Apache Tomcat Native","id":"CVE-2018-8020","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"debian:debian_linux","products":["debian:debian_linux"],"type":"auth_bypass","year":"2018"},"n_packages":0,"n_references":13,"next":{"headline":"Deserialization of Untrusted Data in superset","id":"CVE-2018-8021"},"packages":[],"prev":{"headline":"Auth bypass in Apache Tomcat Native","id":"CVE-2018-8019"},"products":["Apache Tomcat Native"],"published":"2018-07-31","related":[{"cvss_score":9.1,"headline":"Apache Tomcat Native: Insecure OpenSSL options enabled","id":"CVE-2026-86246","kev_date_added":null,"published":"2026-09-23"},{"cvss_score":7.5,"headline":"Apache Tomcat Native: DoS via TLS handshake","id":"CVE-2026-86243","kev_date_added":null,"published":"2026-09-23"},{"cvss_score":7.4,"headline":"Apache Tomcat Native: Client certificate requirements can be down-graded","id":"CVE-2026-86247","kev_date_added":null,"published":"2026-09-23"},{"cvss_score":7.4,"headline":"Auth bypass in Apache Tomcat Native","id":"CVE-2018-8019","kev_date_added":null,"published":"2018-07-31"},{"cvss_score":5.9,"headline":"Security feature bypass in Apache Tomcat Native","id":"CVE-2017-15698","kev_date_added":null,"published":"2018-01-31"}],"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":"2024-09-17","vendors":["Apache Software Foundation"]},"summary":"Attackers can authenticate using revoked client certificates in mutual TLS setups due to improper OCSP response validation in Apache Tomcat Native.","url":"https://insights.sbomify.com/CVE-2018-8020/"}