{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2021-42072 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2021-42072 is a high-severity authentication bypass vulnerability in Fedoraproject Fedora, published on 8 Nov 2021. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-42072 and fix it if it is affected.\n\nWhat it is: CVE-2021-42072 is a high-severity authentication bypass vulnerability in Fedoraproject Fedora, published on 8 Nov 2021. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-42072 in the wild and no public exploit code.\n\nAffected product: Fedoraproject Fedora. 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-2021-42072/ (Markdown: https://insights.sbomify.com/CVE-2021-42072/index.md)","id":"CVE-2021-42072","markdown":"https://insights.sbomify.com/CVE-2021-42072/index.md","name":"CVE-2021-42072","record":{"aliases":["GHSA-wvmp-5fvm-29ff"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["denial_of_service","data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Barrier KVM software","requires_auth":"low_privilege","summary":"Barrier server fails to verify client identity, allowing attackers to cause denial of service or leak and corrupt data.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"barrier","vendor":"barrier_project"},{"product":"fedora","vendor":"fedoraproject"}],"cvss":{"score":8.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"An issue was discovered in Barrier before 2.4.0. The barriers component (aka the server-side implementation of Barrier) does not sufficiently verify the identify of connecting clients. Clients can thus exploit weaknesses in the provided protocol to cause denial-of-service or stage further attacks that could lead to information leaks or integrity corruption.","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 n/a","id":"CVE-2021-42072","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"fedoraproject:fedora","products":["fedoraproject:fedora"],"type":"auth_bypass","year":"2021"},"n_packages":0,"n_references":4,"next":{"headline":"Auth bypass in n/a","id":"CVE-2021-42073"},"packages":[],"prev":{"headline":"Command injection in n/a","id":"CVE-2021-42071"},"products":["n/a"],"published":"2021-11-08","related":[{"cvss_score":8.2,"headline":"Auth bypass in n/a","id":"CVE-2021-42073","kev_date_added":null,"published":"2021-11-08"},{"cvss_score":7.5,"headline":"Use after free in n/a","id":"CVE-2021-42074","kev_date_added":null,"published":"2021-11-08"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2021-42075","kev_date_added":null,"published":"2021-11-08"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2021-42076","kev_date_added":null,"published":"2021-11-08"}],"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":"Barrier server fails to verify client identity, allowing attackers to cause denial of service or leak and corrupt data.","url":"https://insights.sbomify.com/CVE-2021-42072/"}