{"answers":{"affected":"3 open source packages ship an affected version, including org.apache.nifi:nifi and nifi. It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-9487 in the wild and no public exploit code.","fix":"Upgrade org.apache.nifi:nifi to 1.12.0-RC1 or later.","what":"CVE-2020-9487 is a high-severity denial of service vulnerability in Apache Nifi, published on 1 Oct 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-9487 and fix it if it is affected.\n\nWhat it is: CVE-2020-9487 is a high-severity denial of service vulnerability in Apache Nifi, published on 1 Oct 2020. 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-2020-9487 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.apache.nifi:nifi (Maven): affected from 1.0.0; fixed in 1.12.0-RC1\n- org.apache.nifi:nifi (Maven): affected from 1.0.0; fixed in 1.12.0-RC1\n- nifi (Bitnami): affected from 1.0.0 up to 1.11.4; no fix listed\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-2020-9487/ (Markdown: https://insights.sbomify.com/CVE-2020-9487/index.md)","id":"CVE-2020-9487","markdown":"https://insights.sbomify.com/CVE-2020-9487/index.md","name":"CVE-2020-9487","record":{"aliases":["BIT-nifi-2020-9487","GHSA-3pp3-77j6-8ph6"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Apache NiFi","requires_auth":"none","summary":"Unauthenticated attackers can exhaust download token resources in Apache NiFi, preventing legitimate users from accessing content.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"nifi","vendor":"apache"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"In Apache NiFi 1.0.0 to 1.11.4, the NiFi download token (one-time password) mechanism used a fixed cache size and did not authenticate a request to create a download token, only when attempting to use the token to access the content. An unauthenticated user could repeatedly request download tokens, preventing legitimate users from requesting download tokens.","ecosystems":["Bitnami","Maven"],"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":"Missing Authentication for Critical Function in Apache NiFi","id":"CVE-2020-9487","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"apache:nifi","products":["apache:nifi"],"type":"denial_of_service","year":"2020"},"n_packages":3,"n_references":1,"next":{"headline":"Improper validation of certificate with host mismatch in Apache Log4j SMTP appender","id":"CVE-2020-9488"},"packages":[{"ecosystem":"Bitnami","fixed":[],"introduced":["1.0.0"],"last_affected":["1.11.4"],"package":"nifi","purl":"pkg:bitnami/nifi","source":"BIT-nifi-2020-9487"},{"ecosystem":"Maven","fixed":["1.12.0-RC1"],"introduced":["1.0.0"],"last_affected":[],"package":"org.apache.nifi:nifi","purl":null,"source":"GHSA-3pp3-77j6-8ph6"},{"ecosystem":"Maven","fixed":["1.12.0-RC1"],"introduced":["1.0.0"],"last_affected":[],"package":"org.apache.nifi:nifi","purl":"pkg:maven/org.apache.nifi/nifi","source":"GHSA-3pp3-77j6-8ph6"}],"prev":{"headline":"Insertion of Sensitive Information into Log File in Apache NiFi Stateless","id":"CVE-2020-9486"},"products":["Apache NiFi"],"published":"2020-10-01","related":[{"cvss_score":9.8,"headline":"Improper Restriction of XML External Entity Reference in Apache NiFi","id":"CVE-2018-1309","kev_date_added":null,"published":"2018-05-23"},{"cvss_score":9.8,"headline":"Apache NiFi XSS issue in context path handling","id":"CVE-2017-15697","kev_date_added":null,"published":"2018-01-23"},{"cvss_score":9.8,"headline":"Injection in Apache NiFi","id":"CVE-2017-5636","kev_date_added":null,"published":"2017-10-19"},{"cvss_score":8.8,"headline":"Apache NiFi: Uncontrolled Resource Consumption through Decompression of HTTP Requests","id":"CVE-2026-68981","kev_date_added":null,"published":"2026-08-03"},{"cvss_score":8.8,"headline":"Apache NiFi: Potential Code Injection with Properties Referencing Remote Resources","id":"CVE-2023-36542","kev_date_added":null,"published":"2023-07-29"},{"cvss_score":8.8,"headline":"Apache NiFi: Potential Code Injection with Database Services using H2","id":"CVE-2023-34468","kev_date_added":null,"published":"2023-06-12"},{"cvss_score":8.8,"headline":"Improper Neutralization of Command Elements in Shell User Group Provider","id":"CVE-2022-33140","kev_date_added":null,"published":"2022-06-15"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"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":"Unauthenticated attackers can exhaust download token resources in Apache NiFi, preventing legitimate users from accessing content.","url":"https://insights.sbomify.com/CVE-2020-9487/"}