{"answers":{"affected":"21 open source packages ship an affected version, including typo3/cms-form, typo3 and typo3/cms. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-21357 in the wild and no public exploit code.","fix":"Upgrade typo3/cms-form to a fixed version for your release line: 10.4.14, 11.1.1, 8.7.40 or 9.5.25.","what":"CVE-2021-21357 is a high-severity vulnerability in Typo3 Typo3, published on 23 Mar 2021. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-21357 and fix it if it is affected.\n\nWhat it is: CVE-2021-21357 is a high-severity vulnerability in Typo3 Typo3, published on 23 Mar 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-2021-21357 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- typo3/cms-form (Packagist): affected from 10.0.0; fixed in 10.4.14\n- typo3/cms-form (Packagist): affected from 10.0.0; fixed in 10.4.14\n- typo3/cms-form (Packagist): affected from 11.0.0; fixed in 11.1.1\n- typo3/cms-form (Packagist): affected from 11.0.0; fixed in 11.1.1\n- typo3/cms-form (Packagist): affected from 8.0.0; fixed in 8.7.40\n- typo3/cms-form (Packagist): affected from 8.0.0; fixed in 8.7.40\n- typo3/cms-form (Packagist): affected from 9.0.0; fixed in 9.5.25\n- typo3/cms-form (Packagist): affected from 9.0.0; fixed in 9.5.25\n- typo3 (Bitnami): affected from 8.0.0; fixed in 8.7.40, 9.5.25, 10.4.14, 11.1.1\n- typo3/cms (Packagist): affected from 10.0.0; fixed in 10.4.14\n- typo3/cms (Packagist): affected from 10.0.0; fixed in 10.4.14\n- typo3/cms (Packagist): affected from 11.0.0; fixed in 11.1.1\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-2021-21357/ (Markdown: https://insights.sbomify.com/CVE-2021-21357/index.md)","id":"CVE-2021-21357","markdown":"https://insights.sbomify.com/CVE-2021-21357/index.md","name":"CVE-2021-21357","record":{"aliases":["BIT-typo3-2021-21357","GHSA-3vg7-jw9m-pc3f"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"TYPO3 CMS","requires_auth":"low_privilege","summary":"Authenticated backend users can bypass form restrictions to upload arbitrary files, potentially leading to code execution or data modification.","user_interaction":"not_required","vuln_class":"file_upload"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"typo3","vendor":"typo3"}],"cvss":{"score":8.3,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-434","name":"Unrestricted Upload of File with Dangerous Type"},{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"},{"id":"CWE-20","name":"Improper Input Validation"}],"description":"TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 8.7.40, 9.5.25, 10.4.14, 11.1.1 due to improper input validation, attackers can by-pass restrictions of predefined options and submit arbitrary data in the Form Designer backend module of the Form Framework. In the default configuration of the Form Framework this allows attackers to explicitly allow arbitrary mime-types for file uploads - however, default _fileDenyPattern_ successfully blocked files like _.htaccess_ or _malicious.php_. Besides that, attackers can persist those files in any writable directory of the corresponding TYPO3 installation. A valid backend user account with access to the form module is needed to exploit this vulnerability. This is fixed in versions 8.7.40, 9.5.25, 10.4.14, 11.1.1.","ecosystems":["Bitnami","Packagist"],"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":"Broken Access Control in Form Framework","id":"CVE-2021-21357","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"typo3:typo3","products":["typo3:typo3"],"type":"file_upload","year":"2021"},"n_packages":21,"n_references":3,"next":{"headline":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in typo3/cms-form","id":"CVE-2021-21358"},"packages":[{"ecosystem":"Bitnami","fixed":["8.7.40","9.5.25","10.4.14","11.1.1"],"introduced":["8.0.0","9.0.0","10.0.0","11.0.0"],"last_affected":[],"package":"typo3","purl":"pkg:bitnami/typo3","source":"BIT-typo3-2021-21357"},{"ecosystem":"Packagist","fixed":["10.4.14"],"introduced":["10.0.0"],"last_affected":[],"package":"typo3/cms","purl":null,"source":"GHSA-3vg7-jw9m-pc3f"},{"ecosystem":"Packagist","fixed":["10.4.14"],"introduced":["10.0.0"],"last_affected":[],"package":"typo3/cms","purl":"pkg:composer/typo3/cms","source":"GHSA-3vg7-jw9m-pc3f"},{"ecosystem":"Packagist","fixed":["11.1.1"],"introduced":["11.0.0"],"last_affected":[],"package":"typo3/cms","purl":null,"source":"GHSA-3vg7-jw9m-pc3f"},{"ecosystem":"Packagist","fixed":["11.1.1"],"introduced":["11.0.0"],"last_affected":[],"package":"typo3/cms","purl":"pkg:composer/typo3/cms","source":"GHSA-3vg7-jw9m-pc3f"},{"ecosystem":"Packagist","fixed":["9.5.25"],"introduced":["9.0.0"],"last_affected":[],"package":"typo3/cms","purl":null,"source":"GHSA-3vg7-jw9m-pc3f"},{"ecosystem":"Packagist","fixed":["9.5.25"],"introduced":["9.0.0"],"last_affected":[],"package":"typo3/cms","purl":"pkg:composer/typo3/cms","source":"GHSA-3vg7-jw9m-pc3f"},{"ecosystem":"Packagist","fixed":["10.4.14"],"introduced":["10.0.0"],"last_affected":[],"package":"typo3/cms-core","purl":null,"source":"GHSA-3vg7-jw9m-pc3f"},{"ecosystem":"Packagist","fixed":["10.4.14"],"introduced":["10.0.0"],"last_affected":[],"package":"typo3/cms-core","purl":"pkg:composer/typo3/cms-core","source":"GHSA-3vg7-jw9m-pc3f"},{"ecosystem":"Packagist","fixed":["11.1.1"],"introduced":["11.0.0"],"last_affected":[],"package":"typo3/cms-core","purl":null,"source":"GHSA-3vg7-jw9m-pc3f"},{"ecosystem":"Packagist","fixed":["11.1.1"],"introduced":["11.0.0"],"last_affected":[],"package":"typo3/cms-core","purl":"pkg:composer/typo3/cms-core","source":"GHSA-3vg7-jw9m-pc3f"},{"ecosystem":"Packagist","fixed":["9.5.25"],"introduced":["9.0.0"],"last_affected":[],"package":"typo3/cms-core","purl":null,"source":"GHSA-3vg7-jw9m-pc3f"},{"ecosystem":"Packagist","fixed":["9.5.25"],"introduced":["9.0.0"],"last_affected":[],"package":"typo3/cms-core","purl":"pkg:composer/typo3/cms-core","source":"GHSA-3vg7-jw9m-pc3f"},{"ecosystem":"Packagist","fixed":["10.4.14"],"introduced":["10.0.0"],"last_affected":[],"package":"typo3/cms-form","purl":null,"source":"GHSA-3vg7-jw9m-pc3f"},{"ecosystem":"Packagist","fixed":["10.4.14"],"introduced":["10.0.0"],"last_affected":[],"package":"typo3/cms-form","purl":"pkg:composer/typo3/cms-form","source":"GHSA-3vg7-jw9m-pc3f"},{"ecosystem":"Packagist","fixed":["11.1.1"],"introduced":["11.0.0"],"last_affected":[],"package":"typo3/cms-form","purl":null,"source":"GHSA-3vg7-jw9m-pc3f"},{"ecosystem":"Packagist","fixed":["11.1.1"],"introduced":["11.0.0"],"last_affected":[],"package":"typo3/cms-form","purl":"pkg:composer/typo3/cms-form","source":"GHSA-3vg7-jw9m-pc3f"},{"ecosystem":"Packagist","fixed":["8.7.40"],"introduced":["8.0.0"],"last_affected":[],"package":"typo3/cms-form","purl":null,"source":"GHSA-3vg7-jw9m-pc3f"},{"ecosystem":"Packagist","fixed":["8.7.40"],"introduced":["8.0.0"],"last_affected":[],"package":"typo3/cms-form","purl":"pkg:composer/typo3/cms-form","source":"GHSA-3vg7-jw9m-pc3f"},{"ecosystem":"Packagist","fixed":["9.5.25"],"introduced":["9.0.0"],"last_affected":[],"package":"typo3/cms-form","purl":null,"source":"GHSA-3vg7-jw9m-pc3f"},{"ecosystem":"Packagist","fixed":["9.5.25"],"introduced":["9.0.0"],"last_affected":[],"package":"typo3/cms-form","purl":"pkg:composer/typo3/cms-form","source":"GHSA-3vg7-jw9m-pc3f"}],"prev":{"headline":"Unrestricted File Upload in Form Framework","id":"CVE-2021-21355"},"products":["TYPO3.CMS"],"published":"2021-03-23","related":[{"cvss_score":10,"headline":"Indexed Search Engine for TYPO3 Command Execution via Metacharacter Injection","id":"CVE-2009-0258","kev_date_added":null,"published":"2009-01-22"},{"cvss_score":9.8,"headline":"Typo3 SQL injection due to faulty prepared statements","id":"CVE-2011-3583","kev_date_added":null,"published":"2019-11-25"},{"cvss_score":9.8,"headline":"Typo3 Authentication Bypass","id":"CVE-2011-4628","kev_date_added":null,"published":"2019-11-06"},{"cvss_score":8.8,"headline":"Persisted Cross-Site Scripting in Frontend Rendering in typo3","id":"CVE-2023-24814","kev_date_added":null,"published":"2023-02-07"},{"cvss_score":8.8,"headline":"Cross-Site-Request-Forgery in Backend URI Handling in Typo3","id":"CVE-2021-41113","kev_date_added":null,"published":"2021-10-05"},{"cvss_score":8.8,"headline":"Missing Required Cryptographic Step Leading to Sensitive Information Disclosure in TYPO3 CMS","id":"CVE-2020-15098","kev_date_added":null,"published":"2020-07-29"},{"cvss_score":8.8,"headline":"Deserialization of Untrusted Data in TYPO3 CMS","id":"CVE-2020-11067","kev_date_added":null,"published":"2020-05-13"}],"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":"2024-08-03","vendors":["TYPO3"]},"summary":"Authenticated backend users can bypass form restrictions to upload arbitrary files, potentially leading to code execution or data modification.","url":"https://insights.sbomify.com/CVE-2021-21357/"}