{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-35943 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-35943 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-35943 is a critical authentication bypass vulnerability in Couchbase Couchbase Server, published on 29 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-35943 and fix it if it is affected.\n\nWhat it is: CVE-2021-35943 is a critical authentication bypass vulnerability in Couchbase Couchbase Server, published on 29 Sep 2021. 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-2021-35943 in the wild and no public exploit code.\n\nAffected product: Couchbase Couchbase Server. 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-2021-35943/ (Markdown: https://insights.sbomify.com/CVE-2021-35943/index.md)","id":"CVE-2021-35943","markdown":"https://insights.sbomify.com/CVE-2021-35943/index.md","name":"CVE-2021-35943","record":{"aliases":["GHSA-cm7f-fcwh-gc62"],"analysis":{"component_type":"database","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Couchbase Server","requires_auth":"none","summary":"Attackers can bypass authentication for externally managed users by using an empty password, violating RFC4513 standards.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"couchbase_server","vendor":"couchbase"}],"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-287","name":"Improper Authentication"}],"description":"Couchbase Server 6.5.x and 6.6.x through 6.6.2 has Incorrect Access Control. Externally managed users are not prevented from using an empty password, per RFC4513.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Auth bypass in n/a","id":"CVE-2021-35943","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"couchbase:couchbase_server","products":["couchbase:couchbase_server"],"type":"auth_bypass","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Memory corruption in n/a","id":"CVE-2021-35944"},"packages":[],"prev":{"headline":"Integer overflow in n/a","id":"CVE-2021-35942"},"products":["n/a"],"published":"2021-09-29","related":[{"cvss_score":8.8,"headline":"Google Chromium V8 Out-of-Bounds Memory Access","id":"CVE-2024-0519","kev_date_added":"2024-01-17","published":"2024-01-16"},{"cvss_score":8.8,"headline":"Google Chromium V8 Type Confusion","id":"CVE-2023-3079","kev_date_added":"2023-06-07","published":"2023-06-05"},{"cvss_score":8.8,"headline":"Google Chromium V8 Type Confusion","id":"CVE-2023-2033","kev_date_added":"2023-04-17","published":"2023-04-14"},{"cvss_score":9.8,"headline":"Missing authorization in n/a","id":"CVE-2023-49930","kev_date_added":null,"published":"2024-02-28"},{"cvss_score":9.8,"headline":"Missing authorization in n/a","id":"CVE-2023-49931","kev_date_added":null,"published":"2024-02-28"},{"cvss_score":9.8,"headline":"Information disclosure in n/a","id":"CVE-2020-24719","kev_date_added":null,"published":"2020-11-12"}],"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":"2024-08-04","vendors":["n/a"]},"summary":"Attackers can bypass authentication for externally managed users by using an empty password, violating RFC4513 standards.","url":"https://insights.sbomify.com/CVE-2021-35943/"}