{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-42338 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-42338 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-42338 is a critical authentication bypass vulnerability in 4MOSAn GCB Doctor, published on 19 Nov 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-2021-42338 and fix it if it is affected.\n\nWhat it is: CVE-2021-42338 is a critical authentication bypass vulnerability in 4MOSAn GCB Doctor, published on 19 Nov 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-2021-42338 in the wild and no public exploit code.\n\nAffected product: 4MOSAn GCB Doctor. 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-2021-42338/ (Markdown: https://insights.sbomify.com/CVE-2021-42338/index.md)","id":"CVE-2021-42338","markdown":"https://insights.sbomify.com/CVE-2021-42338/index.md","name":"CVE-2021-42338","record":{"aliases":["GHSA-pwgf-2vfp-fh6c"],"analysis":{"component_type":"web_application","fix_type":"no_fix_stated","impacts":["code_execution","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"GCB Doctor web app","requires_auth":"none","summary":"Unauthenticated attackers can bypass login via cookie injection to execute arbitrary code and escalate privileges in GCB Doctor.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"twcert","cpe":[{"product":"gcb_doctor","vendor":"4mosan"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","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"},{"id":"CWE-285","name":"Improper Authorization"}],"description":"4MOSAn GCB Doctor’s login page has improper validation of Cookie, which allows an unauthenticated remote attacker to bypass authentication by code injection in cookie, and arbitrarily manipulate the system or interrupt services by upload and execution of arbitrary files.","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":"4MOSAn GCB Doctor - Improper Authorization","id":"CVE-2021-42338","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"DoS via memory leak with WebSocket connections","id":"CVE-2021-42340"},"packages":[],"prev":{"headline":"TVN-202110009","id":"CVE-2021-42337"},"products":["GCB Doctor"],"published":"2021-11-19","related":[{"cvss_score":9.8,"headline":"4MOSAn GCB Doctor - Unrestricted Upload of File","id":"CVE-2021-44159","kev_date_added":null,"published":"2021-12-20"}],"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":["4MOSAn"]},"summary":"Unauthenticated attackers can bypass login via cookie injection to execute arbitrary code and escalate privileges in GCB Doctor.","url":"https://insights.sbomify.com/CVE-2021-42338/"}