{"answers":{"affected":"3 open source packages ship an affected version, including libphp, php and php-min. It affects 5 products.","exploited":"There is no known exploitation of CVE-2021-21703 in the wild and no public exploit code.","fix":"Upgrade libphp to a fixed version for your release line: 7.3.32, 7.4.25 or 8.0.12.","what":"CVE-2021-21703 is a high-severity vulnerability in Debian Debian Linux, published on 25 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-21703 and fix it if it is affected.\n\nWhat it is: CVE-2021-21703 is a high-severity vulnerability in Debian Debian Linux, published on 25 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-21703 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- libphp (Bitnami): affected from 7.3.0; fixed in 7.3.32, 7.4.25, 8.0.12\n- php (Bitnami): affected from 7.3.0; fixed in 7.3.32, 7.4.25, 8.0.12\n- php-min (Bitnami): affected from 7.3.0; fixed in 7.3.32, 7.4.25, 8.0.12\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-2021-21703/ (Markdown: https://insights.sbomify.com/CVE-2021-21703/index.md)","id":"CVE-2021-21703","markdown":"https://insights.sbomify.com/CVE-2021-21703/index.md","name":"CVE-2021-21703","record":{"aliases":["BIT-libphp-2021-21703","BIT-php-2021-21703","BIT-php-min-2021-21703","CLSA-2022-1645466955","CLSA-2022-1645701000","DEBIAN-CVE-2021-21703","DLA-2794-1","DSA-4992-1","DSA-4993-1","ECHO-cad0-612f-7d3a","GHSA-h8qx-36w6-3rc4","MGASA-2021-0501","OESA-2021-1430","SUSE-SU-2021:3726-1","SUSE-SU-2021:3727-1","UBUNTU-CVE-2021-21703","USN-5125-1","openSUSE-SU-2024:11585-1","openSUSE-SU-2024:11594-1"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"PHP-FPM server","requires_auth":"low_privilege","summary":"Local unprivileged users can escalate privileges to root by exploiting memory access flaws in PHP-FPM when the main process runs as root.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"php","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"clustered_data_ontap","vendor":"netapp"},{"product":"communications_diameter_signaling_router","vendor":"oracle"},{"product":"php","vendor":"php"}],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-284","name":"Improper Access Control"}],"description":"In PHP versions 7.3.x up to and including 7.3.31, 7.4.x below 7.4.25 and 8.0.x below 8.0.12, when running PHP FPM SAPI with main FPM daemon process running as root and child worker processes running as lower-privileged users, it is possible for the child processes to access memory shared with the main process and write to it, modifying it in a way that would cause the root process to conduct invalid memory reads and writes, which can be used to escalate privileges from local unprivileged user to the root user.","ecosystems":["Bitnami","SUSE:Linux Enterprise Module for Web and Scripting 12","SUSE:Linux Enterprise Software Development Kit 12 SP5","openSUSE:Tumbleweed"],"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":"PHP-FPM memory access in root process leading to privilege escalation","id":"CVE-2021-21703","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"debian:debian_linux","products":["debian:debian_linux","fedoraproject:fedora","netapp:clustered_data_ontap","oracle:communications_diameter_signaling_router","php:php"],"type":"privilege_escalation","year":"2021"},"n_packages":9,"n_references":12,"next":{"headline":"Multiple vulnerabilities in Firebird client extension","id":"CVE-2021-21704"},"packages":[{"ecosystem":"Bitnami","fixed":["7.3.32","7.4.25","8.0.12"],"introduced":["7.3.0","7.4.0","8.0.0"],"last_affected":[],"package":"libphp","purl":"pkg:bitnami/libphp","source":"BIT-libphp-2021-21703"},{"ecosystem":"Bitnami","fixed":["7.3.32","7.4.25","8.0.12"],"introduced":["7.3.0","7.4.0","8.0.0"],"last_affected":[],"package":"php","purl":"pkg:bitnami/php","source":"BIT-php-2021-21703"},{"ecosystem":"Bitnami","fixed":["7.3.32","7.4.25","8.0.12"],"introduced":["7.3.0","7.4.0","8.0.0"],"last_affected":[],"package":"php-min","purl":"pkg:bitnami/php-min","source":"BIT-php-min-2021-21703"},{"ecosystem":"SUSE:Linux Enterprise Module for Web and Scripting 12","fixed":["7.2.5-1.72.1"],"introduced":["0"],"last_affected":[],"package":"php72","purl":"pkg:rpm/suse/php72\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Web%20and%20Scripting%2012","source":"SUSE-SU-2021:3727-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Web and Scripting 12","fixed":["7.4.6-1.27.1"],"introduced":["0"],"last_affected":[],"package":"php74","purl":"pkg:rpm/suse/php74\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Web%20and%20Scripting%2012","source":"SUSE-SU-2021:3726-1"},{"ecosystem":"SUSE:Linux Enterprise Software Development Kit 12 SP5","fixed":["7.2.5-1.72.1"],"introduced":["0"],"last_affected":[],"package":"php72","purl":"pkg:rpm/suse/php72\u0026distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5","source":"SUSE-SU-2021:3727-1"},{"ecosystem":"SUSE:Linux Enterprise Software Development Kit 12 SP5","fixed":["7.4.6-1.27.1"],"introduced":["0"],"last_affected":[],"package":"php74","purl":"pkg:rpm/suse/php74\u0026distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5","source":"SUSE-SU-2021:3726-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["7.4.25-1.1"],"introduced":["0"],"last_affected":[],"package":"php7","purl":"pkg:rpm/opensuse/php7\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2024:11594-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["8.0.12-1.1"],"introduced":["0"],"last_affected":[],"package":"php8","purl":"pkg:rpm/opensuse/php8\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2024:11585-1"}],"prev":{"headline":"Null Dereference in SoapClient","id":"CVE-2021-21702"},"products":["PHP"],"published":"2021-10-25","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"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":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":"2024-09-17","vendors":["PHP Group"]},"summary":"Local unprivileged users can escalate privileges to root by exploiting memory access flaws in PHP-FPM when the main process runs as root.","url":"https://insights.sbomify.com/CVE-2021-21703/"}