{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-20791 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-20791 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-20791 is a critical missing authorization vulnerability in J’s Communication Co., Ltd. RevoWorks Browser, published on 17 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-2021-20791 and fix it if it is affected.\n\nWhat it is: CVE-2021-20791 is a critical missing authorization vulnerability in J’s Communication Co., Ltd. RevoWorks Browser, published on 17 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-2021-20791 in the wild and no public exploit code.\n\nAffected product: J’s Communication Co., Ltd. RevoWorks Browser. 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-2021-20791/ (Markdown: https://insights.sbomify.com/CVE-2021-20791/index.md)","id":"CVE-2021-20791","markdown":"https://insights.sbomify.com/CVE-2021-20791/index.md","name":"CVE-2021-20791","record":{"aliases":["GHSA-9435-7c72-6m39"],"analysis":{"component_type":"browser","fix_type":"upgrade","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"RevoWorks Browser","requires_auth":"none","summary":"An attacker can bypass access restrictions to exchange unauthorized files between local and isolated environments in RevoWorks Browser.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"jpcert","cpe":[{"product":"revoworks_browser","vendor":"jscom"}],"cvss":{"score":9.3,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N","version":"3.1"},"cwes":[],"description":"Improper access control vulnerability in RevoWorks Browser 2.1.230 and earlier allows an attacker to bypass access restriction and to exchange unauthorized files between the local environment and the isolated environment or settings of the web browser via unspecified vectors.","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":"Missing authorization in RevoWorks Browser","id":"CVE-2021-20791","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Cross-site scripting in Quiz And Survey Master","id":"CVE-2021-20792"},"packages":[],"prev":{"headline":"Code injection in RevoWorks Browser","id":"CVE-2021-20790"},"products":["RevoWorks Browser"],"published":"2021-09-17","related":[{"cvss_score":9.6,"headline":"Code injection in RevoWorks Browser","id":"CVE-2021-20790","kev_date_added":null,"published":"2021-09-17"},{"cvss_score":7.8,"headline":"Code injection in RevoWorks SCVX, RevoWorks Browser, and RevoWorks","id":"CVE-2022-27176","kev_date_added":null,"published":"2022-06-14"}],"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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["J’s Communication Co., Ltd."]},"summary":"An attacker can bypass access restrictions to exchange unauthorized files between local and isolated environments in RevoWorks Browser.","url":"https://insights.sbomify.com/CVE-2021-20791/"}