{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-20796 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-20796 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-20796 is a medium-severity path traversal vulnerability in Cybozu, Inc. Cybozu Remote Service, published on 13 Oct 2021. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-20796 and fix it if it is affected.\n\nWhat it is: CVE-2021-20796 is a medium-severity path traversal vulnerability in Cybozu, Inc. Cybozu Remote Service, published on 13 Oct 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-2021-20796 in the wild and no public exploit code.\n\nAffected product: Cybozu, Inc. Cybozu Remote Service. 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-2021-20796/ (Markdown: https://insights.sbomify.com/CVE-2021-20796/index.md)","id":"CVE-2021-20796","markdown":"https://insights.sbomify.com/CVE-2021-20796/index.md","name":"CVE-2021-20796","record":{"aliases":["GHSA-hj57-6wxm-559x"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Cybozu Remote Service","requires_auth":"low_privilege","summary":"A remote authenticated attacker can upload arbitrary files via directory traversal in Cybozu Remote Service, potentially leading to code execution.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"jpcert","cpe":[{"product":"remote_service_manager","vendor":"cybozu"}],"cvss":{"score":6.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"Directory traversal vulnerability in the management screen of Cybozu Remote Service 3.1.8 allows a remote authenticated attacker to upload an arbitrary file 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":"Path traversal in Cybozu Remote Service","id":"CVE-2021-20796","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"path_traversal","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Cross-site scripting in Cybozu Remote Service","id":"CVE-2021-20797"},"packages":[],"prev":{"headline":"Cross-site request forgery in Cybozu Remote Service","id":"CVE-2021-20795"},"products":["Cybozu Remote Service"],"published":"2021-10-13","related":[{"cvss_score":8.8,"headline":"Cross-site request forgery in Cybozu Remote Service","id":"CVE-2021-20795","kev_date_added":null,"published":"2021-10-13"},{"cvss_score":8.8,"headline":"File upload in Cybozu Remote Service","id":"CVE-2018-16169","kev_date_added":null,"published":"2019-01-09"},{"cvss_score":8.8,"headline":"Path traversal in Cybozu Remote Service","id":"CVE-2018-16171","kev_date_added":null,"published":"2019-01-09"},{"cvss_score":8.1,"headline":"Path traversal in Cybozu Remote Service","id":"CVE-2018-16170","kev_date_added":null,"published":"2019-01-09"},{"cvss_score":7.8,"headline":"Denial of service in n/a","id":"CVE-2014-7266","kev_date_added":null,"published":"2015-02-01"},{"cvss_score":7.8,"headline":"Denial of service in n/a","id":"CVE-2014-1983","kev_date_added":null,"published":"2014-04-19"},{"cvss_score":6.8,"headline":"Auth bypass in n/a","id":"CVE-2014-1984","kev_date_added":null,"published":"2014-04-19"}],"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":"2024-08-03","vendors":["Cybozu, Inc."]},"summary":"A remote authenticated attacker can upload arbitrary files via directory traversal in Cybozu Remote Service, potentially leading to code execution.","url":"https://insights.sbomify.com/CVE-2021-20796/"}