{"answers":{"affected":"3 open source packages ship an affected version, including libphp, php and php-min. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-21706 in the wild and no public exploit code.","fix":"Upgrade libphp to a fixed version for your release line: 7.3.31, 7.4.24 or 8.0.11.","what":"CVE-2021-21706 is a medium-severity path traversal vulnerability in Php Php, published on 4 Oct 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-21706 and fix it if it is affected.\n\nWhat it is: CVE-2021-21706 is a medium-severity path traversal vulnerability in Php Php, published on 4 Oct 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-21706 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- libphp (Bitnami): affected from 7.3.0; fixed in 7.3.31, 7.4.24, 8.0.11\n- php (Bitnami): affected from 7.3.0; fixed in 7.3.31, 7.4.24, 8.0.11\n- php-min (Bitnami): affected from 7.3.0; fixed in 7.3.31, 7.4.24, 8.0.11\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-2021-21706/ (Markdown: https://insights.sbomify.com/CVE-2021-21706/index.md)","id":"CVE-2021-21706","markdown":"https://insights.sbomify.com/CVE-2021-21706/index.md","name":"CVE-2021-21706","record":{"aliases":["BIT-libphp-2021-21706","BIT-php-2021-21706","BIT-php-min-2021-21706","ECHO-6fd1-b740-5dbb","GHSA-x4g4-47f7-vvq4"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_modify","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"PHP library","requires_auth":"none","summary":"Attackers can exploit ZipArchive::extractTo in PHP on Windows to write files outside the intended directory, potentially overwriting critical files or executing code.","user_interaction":"required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"php","cpe":[{"product":"php","vendor":"php"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/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"},{"id":"CWE-24","name":"Path Traversal: '../filedir'"}],"description":"In PHP versions 7.3.x below 7.3.31, 7.4.x below 7.4.24 and 8.0.x below 8.0.11, in Microsoft Windows environment, ZipArchive::extractTo may be tricked into writing a file outside target directory when extracting a ZIP file, thus potentially causing files to be created or overwritten, subject to OS permissions.","ecosystems":["Bitnami"],"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":"ZipArchive::extractTo may extract outside of destination dir","id":"CVE-2021-21706","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"php:php","products":["php:php"],"type":"path_traversal","year":"2021"},"n_packages":3,"n_references":2,"next":{"headline":"Special characters break path parsing in XML functions","id":"CVE-2021-21707"},"packages":[{"ecosystem":"Bitnami","fixed":["7.3.31","7.4.24","8.0.11"],"introduced":["7.3.0","7.4.0","8.0.0"],"last_affected":[],"package":"libphp","purl":"pkg:bitnami/libphp","source":"BIT-libphp-2021-21706"},{"ecosystem":"Bitnami","fixed":["7.3.31","7.4.24","8.0.11"],"introduced":["7.3.0","7.4.0","8.0.0"],"last_affected":[],"package":"php","purl":"pkg:bitnami/php","source":"BIT-php-2021-21706"},{"ecosystem":"Bitnami","fixed":["7.3.31","7.4.24","8.0.11"],"introduced":["7.3.0","7.4.0","8.0.0"],"last_affected":[],"package":"php-min","purl":"pkg:bitnami/php-min","source":"BIT-php-min-2021-21706"}],"prev":{"headline":"Incorrect URL validation in FILTER_VALIDATE_URL","id":"CVE-2021-21705"},"products":["PHP"],"published":"2021-10-04","related":[{"cvss_score":10,"headline":"Integer overflow in n/a","id":"CVE-2012-2688","kev_date_added":null,"published":"2012-07-20"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2012-2376","kev_date_added":null,"published":"2012-05-21"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2011-3268","kev_date_added":null,"published":"2011-08-25"},{"cvss_score":10,"headline":"Other in n/a","id":"CVE-2009-4143","kev_date_added":null,"published":"2009-12-21"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2008-5557","kev_date_added":null,"published":"2008-12-23"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2008-2050","kev_date_added":null,"published":"2008-05-05"},{"cvss_score":10,"headline":"Command injection in n/a","id":"CVE-2008-2051","kev_date_added":null,"published":"2008-05-05"}],"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":"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":"2024-09-16","vendors":["PHP Group"]},"summary":"Attackers can exploit ZipArchive::extractTo in PHP on Windows to write files outside the intended directory, potentially overwriting critical files or executing code.","url":"https://insights.sbomify.com/CVE-2021-21706/"}