{"answers":{"affected":"1 open source package ship an affected version, including apache. It affects 6 products.","exploited":"There is no known exploitation of CVE-2021-33193 in the wild and no public exploit code.","fix":"Upgrade apache to 2.4.49 or later.","what":"CVE-2021-33193 is a high-severity vulnerability in Apache Http Server, published on 16 Aug 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-2021-33193 and fix it if it is affected.\n\nWhat it is: CVE-2021-33193 is a high-severity vulnerability in Apache Http Server, published on 16 Aug 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-2021-33193 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- apache (Bitnami): affected from 2.4.17; fixed in 2.4.49\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-2021-33193/ (Markdown: https://insights.sbomify.com/CVE-2021-33193/index.md)","id":"CVE-2021-33193","markdown":"https://insights.sbomify.com/CVE-2021-33193/index.md","name":"CVE-2021-33193","record":{"aliases":["ALPINE-CVE-2021-33193","AZL-6483","BIT-apache-2021-33193","CLEANSTART-2026-XX88354","DEBIAN-CVE-2021-33193","GHSA-p9fg-6rr5-38xc","SUSE-SU-2021:2918-1","SUSE-SU-2021:2954-1","UBUNTU-CVE-2021-33193","openSUSE-SU-2021:1234-1","openSUSE-SU-2021:2954-1"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Apache HTTP Server","requires_auth":"none","summary":"Attackers can inject HTTP/2 methods to bypass validation and cause request splitting or cache poisoning in Apache HTTP Server.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"http_server","vendor":"apache"},{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"secure_backup","vendor":"oracle"},{"product":"zfs_storage_appliance_kit","vendor":"oracle"},{"product":"tenable.sc","vendor":"tenable"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[],"description":"A crafted method sent through HTTP/2 will bypass validation and be forwarded by mod_proxy, which can lead to request splitting or cache poisoning. This issue affects Apache HTTP Server 2.4.17 to 2.4.48.","ecosystems":["Bitnami","SUSE:Linux Enterprise Module for Basesystem 15 SP2","SUSE:Linux Enterprise Module for Basesystem 15 SP3","SUSE:Linux Enterprise Module for Package Hub 15 SP3","SUSE:Linux Enterprise Module for Server Applications 15 SP2","SUSE:Linux Enterprise Module for Server Applications 15 SP3","SUSE:Linux Enterprise Server 12 SP5","SUSE:Linux Enterprise Server for SAP Applications 12 SP5","SUSE:Linux Enterprise Software Development Kit 12 SP5","openSUSE:Leap 15.2","openSUSE:Leap 15.3"],"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":"Request splitting via HTTP/2 method injection and mod_proxy","id":"CVE-2021-33193","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"apache:http_server","products":["apache:http_server","debian:debian_linux","fedoraproject:fedora","oracle:zfs_storage_appliance_kit"],"type":"other","year":"2021"},"n_packages":11,"n_references":13,"next":{"headline":"golang.org/x/net/html Infinite Loop vulnerability","id":"CVE-2021-33194"},"packages":[{"ecosystem":"Bitnami","fixed":["2.4.49"],"introduced":["2.4.17"],"last_affected":[],"package":"apache","purl":"pkg:bitnami/apache","source":"BIT-apache-2021-33193"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP2","fixed":["2.4.43-3.25.1"],"introduced":["0"],"last_affected":[],"package":"apache2","purl":"pkg:rpm/suse/apache2\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2","source":"SUSE-SU-2021:2954-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP3","fixed":["2.4.43-3.25.1"],"introduced":["0"],"last_affected":[],"package":"apache2","purl":"pkg:rpm/suse/apache2\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3","source":"SUSE-SU-2021:2954-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Package Hub 15 SP3","fixed":["2.4.43-3.25.1"],"introduced":["0"],"last_affected":[],"package":"apache2","purl":"pkg:rpm/suse/apache2\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP3","source":"SUSE-SU-2021:2954-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Server Applications 15 SP2","fixed":["2.4.43-3.25.1"],"introduced":["0"],"last_affected":[],"package":"apache2","purl":"pkg:rpm/suse/apache2\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP2","source":"SUSE-SU-2021:2954-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Server Applications 15 SP3","fixed":["2.4.43-3.25.1"],"introduced":["0"],"last_affected":[],"package":"apache2","purl":"pkg:rpm/suse/apache2\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP3","source":"SUSE-SU-2021:2954-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP5","fixed":["2.4.23-29.77.2"],"introduced":["0"],"last_affected":[],"package":"apache2","purl":"pkg:rpm/suse/apache2\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5","source":"SUSE-SU-2021:2918-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP5","fixed":["2.4.23-29.77.2"],"introduced":["0"],"last_affected":[],"package":"apache2","purl":"pkg:rpm/suse/apache2\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5","source":"SUSE-SU-2021:2918-1"},{"ecosystem":"SUSE:Linux Enterprise Software Development Kit 12 SP5","fixed":["2.4.23-29.77.2"],"introduced":["0"],"last_affected":[],"package":"apache2","purl":"pkg:rpm/suse/apache2\u0026distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5","source":"SUSE-SU-2021:2918-1"},{"ecosystem":"openSUSE:Leap 15.2","fixed":["2.4.43-lp152.2.18.1"],"introduced":["0"],"last_affected":[],"package":"apache2","purl":"pkg:rpm/opensuse/apache2\u0026distro=openSUSE%20Leap%2015.2","source":"openSUSE-SU-2021:1234-1"},{"ecosystem":"openSUSE:Leap 15.3","fixed":["2.4.43-3.25.1"],"introduced":["0"],"last_affected":[],"package":"apache2","purl":"pkg:rpm/opensuse/apache2\u0026distro=openSUSE%20Leap%2015.3","source":"openSUSE-SU-2021:2954-1"}],"prev":{"headline":"Display information UI XSS","id":"CVE-2021-33192"},"products":["Apache HTTP Server"],"published":"2021-08-16","related":[{"cvss_score":9.8,"headline":"Apache HTTP Server Path Traversal","id":"CVE-2021-42013","kev_date_added":"2021-11-03","published":"2021-10-07"},{"cvss_score":9.1,"headline":"Apache HTTP Server Improper Escaping of Output","id":"CVE-2024-38475","kev_date_added":"2025-05-01","published":"2024-07-01"},{"cvss_score":9,"headline":"Apache HTTP Server-Side Request Forgery (SSRF)","id":"CVE-2021-40438","kev_date_added":"2021-12-01","published":"2021-09-16"},{"cvss_score":7.8,"headline":"Apache HTTP Server Privilege Escalation","id":"CVE-2019-0211","kev_date_added":"2021-11-03","published":"2019-04-08"},{"cvss_score":7.5,"headline":"Apache HTTP Server Path Traversal","id":"CVE-2021-41773","kev_date_added":"2021-11-03","published":"2021-10-05"},{"cvss_score":10,"headline":"Use after free in n/a","id":"CVE-2010-0425","kev_date_added":null,"published":"2010-03-05"},{"cvss_score":10,"headline":"Auth bypass in n/a","id":"CVE-2005-2700","kev_date_added":null,"published":"2005-09-06"}],"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":"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 inject HTTP/2 methods to bypass validation and cause request splitting or cache poisoning in Apache HTTP Server.","url":"https://insights.sbomify.com/CVE-2021-33193/"}