{"answers":{"affected":"4 open source packages ship an affected version, including org.apache.nifi:nifi. It affects 1 product.","exploited":"There is no known exploitation of CVE-2017-5636 in the wild and no public exploit code.","fix":"Upgrade org.apache.nifi:nifi to a fixed version for your release line: 0.7.2 or 1.1.2.","what":"CVE-2017-5636 is a critical unsafe deserialization vulnerability in Apache Nifi, published on 19 Oct 2017. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2017-5636 and fix it if it is affected.\n\nWhat it is: CVE-2017-5636 is a critical unsafe deserialization vulnerability in Apache Nifi, published on 19 Oct 2017. 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-2017-5636 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.apache.nifi:nifi (Maven): affected all versions; fixed in 0.7.2\n- org.apache.nifi:nifi (Maven): affected all versions; fixed in 0.7.2\n- org.apache.nifi:nifi (Maven): affected from 1.0.0; fixed in 1.1.2\n- org.apache.nifi:nifi (Maven): affected from 1.0.0; fixed in 1.1.2\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-2017-5636/ (Markdown: https://insights.sbomify.com/CVE-2017-5636/index.md)","id":"CVE-2017-5636","markdown":"https://insights.sbomify.com/CVE-2017-5636/index.md","name":"CVE-2017-5636","record":{"aliases":["GHSA-jrcc-7jf5-3pxg"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["privilege_escalation","security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Apache NiFi","requires_auth":"none","summary":"Attackers can impersonate users and gain permissions in Apache NiFi clusters via crafted usernames in proxy chain serialization.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"nifi","vendor":"apache"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.0"},"cwes":[{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"}],"description":"In Apache NiFi before 0.7.2 and 1.x before 1.1.2 in a cluster environment, the proxy chain serialization/deserialization is vulnerable to an injection attack where a carefully crafted username could impersonate another user and gain their permissions on a replicated request to another node.","ecosystems":["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":"Injection in Apache NiFi","id":"CVE-2017-5636","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"apache:nifi","products":["apache:nifi"],"type":"deserialization","year":"2017"},"n_packages":4,"n_references":2,"next":{"headline":"Uncontrolled Resource Consumption in Apache ZooKeeper","id":"CVE-2017-5637"},"packages":[{"ecosystem":"Maven","fixed":["0.7.2"],"introduced":["0"],"last_affected":[],"package":"org.apache.nifi:nifi","purl":null,"source":"GHSA-jrcc-7jf5-3pxg"},{"ecosystem":"Maven","fixed":["0.7.2"],"introduced":["0"],"last_affected":[],"package":"org.apache.nifi:nifi","purl":"pkg:maven/org.apache.nifi/nifi","source":"GHSA-jrcc-7jf5-3pxg"},{"ecosystem":"Maven","fixed":["1.1.2"],"introduced":["1.0.0"],"last_affected":[],"package":"org.apache.nifi:nifi","purl":null,"source":"GHSA-jrcc-7jf5-3pxg"},{"ecosystem":"Maven","fixed":["1.1.2"],"introduced":["1.0.0"],"last_affected":[],"package":"org.apache.nifi:nifi","purl":"pkg:maven/org.apache.nifi/nifi","source":"GHSA-jrcc-7jf5-3pxg"}],"prev":{"headline":"Improper Authentication In Apache NiFi","id":"CVE-2017-5635"},"products":["Apache NiFi"],"published":"2017-10-19","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":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":"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":"2024-08-05","vendors":["Apache Software Foundation"]},"summary":"Attackers can impersonate users and gain permissions in Apache NiFi clusters via crafted usernames in proxy chain serialization.","url":"https://insights.sbomify.com/CVE-2017-5636/"}