{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2009-3720 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2009-3720 is a medium-severity memory corruption vulnerability in Apache Http Server, published on 3 Nov 2009. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2009-3720 and fix it if it is affected.\n\nWhat it is: CVE-2009-3720 is a medium-severity memory corruption vulnerability in Apache Http Server, published on 3 Nov 2009. 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-2009-3720 in the wild and no public exploit code.\n\nAffected product: Apache Http Server. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2009-3720/ (Markdown: https://insights.sbomify.com/CVE-2009-3720/index.md)","id":"CVE-2009-3720","markdown":"https://insights.sbomify.com/CVE-2009-3720/index.md","name":"CVE-2009-3720","record":{"aliases":["AZL-43945","AZL-44685","DEBIAN-CVE-2009-3720","DSA-1921-1","GHSA-pj3x-74qr-vrr4","RHSA-2009:1572","RHSA-2010:0002","UBUNTU-CVE-2009-3720"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"XML parsing library","requires_auth":"none","summary":"Attackers can cause a denial of service via crafted XML documents triggering a buffer over-read in the Expat library.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"http_server","vendor":"apache"},{"product":"libexpat","vendor":"libexpat_project"}],"cvss":{"score":5,"severity":"medium","source":"nvd","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","version":"2.0"},"cwes":[],"description":"The updatePosition function in lib/xmltok_impl.c in libexpat in Expat 2.0.1, as used in Python, PyXML, w3c-libwww, and other software, allows context-dependent attackers to cause a denial of service (application crash) via an XML document with crafted UTF-8 sequences that trigger a buffer over-read, a different vulnerability than CVE-2009-2625.","ecosystems":["Red Hat:enterprise_linux:3::as","Red Hat:enterprise_linux:3::desktop","Red Hat:enterprise_linux:3::es","Red Hat:enterprise_linux:3::ws","Red Hat:enterprise_linux:4::as","Red Hat:enterprise_linux:4::desktop","Red Hat:enterprise_linux:4::es","Red Hat:enterprise_linux:4::ws","Red Hat:enterprise_linux:5::client","Red Hat:enterprise_linux:5::server"],"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":"Memory corruption in n/a","id":"CVE-2009-3720","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"apache:http_server","products":["apache:http_server","libexpat_project:libexpat"],"type":"memory_corruption","year":"2009"},"n_packages":28,"n_references":93,"next":{"headline":"Path traversal in ytnef","id":"CVE-2009-3721"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:3::as","fixed":["0:0.11.1-15"],"introduced":["0"],"last_affected":[],"package":"4Suite","purl":"pkg:rpm/redhat/4Suite","source":"RHSA-2009:1572"},{"ecosystem":"Red Hat:enterprise_linux:3::as","fixed":["0:0.11.1-15"],"introduced":["0"],"last_affected":[],"package":"4Suite-debuginfo","purl":"pkg:rpm/redhat/4Suite-debuginfo","source":"RHSA-2009:1572"},{"ecosystem":"Red Hat:enterprise_linux:3::desktop","fixed":["0:0.11.1-15"],"introduced":["0"],"last_affected":[],"package":"4Suite","purl":"pkg:rpm/redhat/4Suite","source":"RHSA-2009:1572"},{"ecosystem":"Red Hat:enterprise_linux:3::desktop","fixed":["0:0.11.1-15"],"introduced":["0"],"last_affected":[],"package":"4Suite-debuginfo","purl":"pkg:rpm/redhat/4Suite-debuginfo","source":"RHSA-2009:1572"},{"ecosystem":"Red Hat:enterprise_linux:3::es","fixed":["0:0.11.1-15"],"introduced":["0"],"last_affected":[],"package":"4Suite","purl":"pkg:rpm/redhat/4Suite","source":"RHSA-2009:1572"},{"ecosystem":"Red Hat:enterprise_linux:3::es","fixed":["0:0.11.1-15"],"introduced":["0"],"last_affected":[],"package":"4Suite-debuginfo","purl":"pkg:rpm/redhat/4Suite-debuginfo","source":"RHSA-2009:1572"},{"ecosystem":"Red Hat:enterprise_linux:3::ws","fixed":["0:0.11.1-15"],"introduced":["0"],"last_affected":[],"package":"4Suite","purl":"pkg:rpm/redhat/4Suite","source":"RHSA-2009:1572"},{"ecosystem":"Red Hat:enterprise_linux:3::ws","fixed":["0:0.11.1-15"],"introduced":["0"],"last_affected":[],"package":"4Suite-debuginfo","purl":"pkg:rpm/redhat/4Suite-debuginfo","source":"RHSA-2009:1572"},{"ecosystem":"Red Hat:enterprise_linux:4::as","fixed":["0:1.0-3.el4_8.1"],"introduced":["0"],"last_affected":[],"package":"4Suite","purl":"pkg:rpm/redhat/4Suite","source":"RHSA-2009:1572"},{"ecosystem":"Red Hat:enterprise_linux:4::as","fixed":["0:1.0-3.el4_8.1"],"introduced":["0"],"last_affected":[],"package":"4Suite-debuginfo","purl":"pkg:rpm/redhat/4Suite-debuginfo","source":"RHSA-2009:1572"},{"ecosystem":"Red Hat:enterprise_linux:4::as","fixed":["0:0.8.3-6.el4_8.2"],"introduced":["0"],"last_affected":[],"package":"PyXML","purl":"pkg:rpm/redhat/PyXML","source":"RHSA-2010:0002"},{"ecosystem":"Red Hat:enterprise_linux:4::as","fixed":["0:0.8.3-6.el4_8.2"],"introduced":["0"],"last_affected":[],"package":"PyXML-debuginfo","purl":"pkg:rpm/redhat/PyXML-debuginfo","source":"RHSA-2010:0002"},{"ecosystem":"Red Hat:enterprise_linux:4::desktop","fixed":["0:1.0-3.el4_8.1"],"introduced":["0"],"last_affected":[],"package":"4Suite","purl":"pkg:rpm/redhat/4Suite","source":"RHSA-2009:1572"},{"ecosystem":"Red Hat:enterprise_linux:4::desktop","fixed":["0:1.0-3.el4_8.1"],"introduced":["0"],"last_affected":[],"package":"4Suite-debuginfo","purl":"pkg:rpm/redhat/4Suite-debuginfo","source":"RHSA-2009:1572"},{"ecosystem":"Red Hat:enterprise_linux:4::desktop","fixed":["0:0.8.3-6.el4_8.2"],"introduced":["0"],"last_affected":[],"package":"PyXML","purl":"pkg:rpm/redhat/PyXML","source":"RHSA-2010:0002"},{"ecosystem":"Red Hat:enterprise_linux:4::desktop","fixed":["0:0.8.3-6.el4_8.2"],"introduced":["0"],"last_affected":[],"package":"PyXML-debuginfo","purl":"pkg:rpm/redhat/PyXML-debuginfo","source":"RHSA-2010:0002"},{"ecosystem":"Red Hat:enterprise_linux:4::es","fixed":["0:1.0-3.el4_8.1"],"introduced":["0"],"last_affected":[],"package":"4Suite","purl":"pkg:rpm/redhat/4Suite","source":"RHSA-2009:1572"},{"ecosystem":"Red Hat:enterprise_linux:4::es","fixed":["0:1.0-3.el4_8.1"],"introduced":["0"],"last_affected":[],"package":"4Suite-debuginfo","purl":"pkg:rpm/redhat/4Suite-debuginfo","source":"RHSA-2009:1572"},{"ecosystem":"Red Hat:enterprise_linux:4::es","fixed":["0:0.8.3-6.el4_8.2"],"introduced":["0"],"last_affected":[],"package":"PyXML","purl":"pkg:rpm/redhat/PyXML","source":"RHSA-2010:0002"},{"ecosystem":"Red Hat:enterprise_linux:4::es","fixed":["0:0.8.3-6.el4_8.2"],"introduced":["0"],"last_affected":[],"package":"PyXML-debuginfo","purl":"pkg:rpm/redhat/PyXML-debuginfo","source":"RHSA-2010:0002"},{"ecosystem":"Red Hat:enterprise_linux:4::ws","fixed":["0:1.0-3.el4_8.1"],"introduced":["0"],"last_affected":[],"package":"4Suite","purl":"pkg:rpm/redhat/4Suite","source":"RHSA-2009:1572"},{"ecosystem":"Red Hat:enterprise_linux:4::ws","fixed":["0:1.0-3.el4_8.1"],"introduced":["0"],"last_affected":[],"package":"4Suite-debuginfo","purl":"pkg:rpm/redhat/4Suite-debuginfo","source":"RHSA-2009:1572"},{"ecosystem":"Red Hat:enterprise_linux:4::ws","fixed":["0:0.8.3-6.el4_8.2"],"introduced":["0"],"last_affected":[],"package":"PyXML","purl":"pkg:rpm/redhat/PyXML","source":"RHSA-2010:0002"},{"ecosystem":"Red Hat:enterprise_linux:4::ws","fixed":["0:0.8.3-6.el4_8.2"],"introduced":["0"],"last_affected":[],"package":"PyXML-debuginfo","purl":"pkg:rpm/redhat/PyXML-debuginfo","source":"RHSA-2010:0002"},{"ecosystem":"Red Hat:enterprise_linux:5::client","fixed":["0:0.8.4-4.el5_4.2"],"introduced":["0"],"last_affected":[],"package":"PyXML","purl":"pkg:rpm/redhat/PyXML","source":"RHSA-2010:0002"},{"ecosystem":"Red Hat:enterprise_linux:5::client","fixed":["0:0.8.4-4.el5_4.2"],"introduced":["0"],"last_affected":[],"package":"PyXML-debuginfo","purl":"pkg:rpm/redhat/PyXML-debuginfo","source":"RHSA-2010:0002"},{"ecosystem":"Red Hat:enterprise_linux:5::server","fixed":["0:0.8.4-4.el5_4.2"],"introduced":["0"],"last_affected":[],"package":"PyXML","purl":"pkg:rpm/redhat/PyXML","source":"RHSA-2010:0002"},{"ecosystem":"Red Hat:enterprise_linux:5::server","fixed":["0:0.8.4-4.el5_4.2"],"introduced":["0"],"last_affected":[],"package":"PyXML-debuginfo","purl":"pkg:rpm/redhat/PyXML-debuginfo","source":"RHSA-2010:0002"}],"prev":{"headline":"Cross-site scripting in n/a","id":"CVE-2009-3719"},"products":["n/a"],"published":"2009-11-03","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":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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":"2024-08-07","vendors":["n/a"]},"summary":"Attackers can cause a denial of service via crafted XML documents triggering a buffer over-read in the Expat library.","url":"https://insights.sbomify.com/CVE-2009-3720/"}