{"answers":{"affected":"2 open source packages ship an affected version, including org.apache.pulsar:pulsar. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-22160 in the wild and no public exploit code.","fix":"Upgrade org.apache.pulsar:pulsar to 2.7.2 or later.","what":"CVE-2021-22160 is a critical authentication bypass vulnerability in Apache Pulsar, published on 26 May 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-2021-22160 and fix it if it is affected.\n\nWhat it is: CVE-2021-22160 is a critical authentication bypass vulnerability in Apache Pulsar, published on 26 May 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-2021-22160 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.apache.pulsar:pulsar (Maven): affected all versions; fixed in 2.7.2\n- org.apache.pulsar:pulsar (Maven): affected all versions; fixed in 2.7.2\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-2021-22160/ (Markdown: https://insights.sbomify.com/CVE-2021-22160/index.md)","id":"CVE-2021-22160","markdown":"https://insights.sbomify.com/CVE-2021-22160/index.md","name":"CVE-2021-22160","record":{"aliases":["GHSA-3cv4-xxv7-934q"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["privilege_escalation","account_takeover"],"network_reachable":"yes","non_default_config":true,"product_category":"Apache Pulsar","requires_auth":"none","summary":"Attackers can bypass authentication and gain admin access by using JWTs with the 'none' algorithm in Apache Pulsar instances configured for token-based auth.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"pulsar","vendor":"apache"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-347","name":"Improper Verification of Cryptographic Signature"}],"description":"If Apache Pulsar is configured to authenticate clients using tokens based on JSON Web Tokens (JWT), the signature of the token is not validated if the algorithm of the presented token is set to \"none\". This allows an attacker to connect to Pulsar instances as any user (incl. admins).","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":"Authentication with JWT allows use of “none”-algorithm","id":"CVE-2021-22160","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"auth_bypass","year":"2021"},"n_packages":2,"n_references":8,"next":{"headline":"Denial of service in n/a","id":"CVE-2021-22161"},"packages":[{"ecosystem":"Maven","fixed":["2.7.2"],"introduced":["0"],"last_affected":[],"package":"org.apache.pulsar:pulsar","purl":null,"source":"GHSA-3cv4-xxv7-934q"},{"ecosystem":"Maven","fixed":["2.7.2"],"introduced":["0"],"last_affected":[],"package":"org.apache.pulsar:pulsar","purl":"pkg:maven/org.apache.pulsar/pulsar","source":"GHSA-3cv4-xxv7-934q"}],"prev":{"headline":"Missing authorization in n/a","id":"CVE-2021-22159"},"products":["Apache Pulsar"],"published":"2021-05-26","related":[{"cvss_score":9.6,"headline":"Apache Pulsar: Incorrect Authorization for Function Worker when using mTLS Authentication through Pulsar Proxy","id":"CVE-2023-30429","kev_date_added":null,"published":"2023-07-12"},{"cvss_score":8.5,"headline":"Apache Pulsar: Improper Input Validation in Pulsar Function Worker allows Remote Code Execution","id":"CVE-2024-27135","kev_date_added":null,"published":"2024-03-12"},{"cvss_score":8.5,"headline":"Apache Pulsar: Pulsar Functions Worker Allows Unauthorized File Access and Unauthorized HTTP/HTTPS Proxying","id":"CVE-2024-27894","kev_date_added":null,"published":"2024-03-12"},{"cvss_score":8.4,"headline":"Apache Pulsar: Pulsar Functions Worker's Archive Extraction Vulnerability Allows Unauthorized File Modification","id":"CVE-2024-27317","kev_date_added":null,"published":"2024-03-12"},{"cvss_score":8.2,"headline":"Apache Pulsar: Improper Authentication for Pulsar Proxy Statistics Endpoint","id":"CVE-2022-34321","kev_date_added":null,"published":"2024-03-12"},{"cvss_score":8.2,"headline":"Apache Pulsar Broker: Incorrect Authorization Validation for Rest Producer","id":"CVE-2023-30428","kev_date_added":null,"published":"2023-07-12"}],"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":"2024-08-03","vendors":["Apache Software Foundation"]},"summary":"Attackers can bypass authentication and gain admin access by using JWTs with the 'none' algorithm in Apache Pulsar instances configured for token-based auth.","url":"https://insights.sbomify.com/CVE-2021-22160/"}