{"answers":{"affected":"2 open source packages ship an affected version, including io.netty:netty-handler. It affects 13 products.","exploited":"There is no known exploitation of CVE-2020-11612 in the wild and no public exploit code.","fix":"Upgrade io.netty:netty-handler to 4.1.46 or later.","what":"CVE-2020-11612 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 7 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-11612 and fix it if it is affected.\n\nWhat it is: CVE-2020-11612 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 7 Apr 2020. 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-2020-11612 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- io.netty:netty-handler (Maven): affected from 4.1.0; fixed in 4.1.46\n- io.netty:netty-handler (Maven): affected from 4.1.0; fixed in 4.1.46\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-2020-11612/ (Markdown: https://insights.sbomify.com/CVE-2020-11612/index.md)","id":"CVE-2020-11612","markdown":"https://insights.sbomify.com/CVE-2020-11612/index.md","name":"CVE-2020-11612","record":{"aliases":["CLEANSTART-2026-TF61372","CVE-2020-10707","DEBIAN-CVE-2020-11612","GHSA-mm9x-g8pc-w292","RHSA-2020:2605","UBUNTU-CVE-2020-11612"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Netty Java library","requires_auth":"none","summary":"An attacker can cause a denial of service by sending a large ZlibEncoded stream, forcing the Netty server to exhaust all available memory.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"oncommand_api_services","vendor":"netapp"},{"product":"oncommand_insight","vendor":"netapp"},{"product":"oncommand_workflow_automation","vendor":"netapp"},{"product":"netty","vendor":"netty"},{"product":"communications_brm_-_elastic_charging_engine","vendor":"oracle"},{"product":"communications_cloud_native_core_service_communication_proxy","vendor":"oracle"},{"product":"communications_design_studio","vendor":"oracle"},{"product":"communications_messaging_server","vendor":"oracle"},{"product":"nosql_database","vendor":"oracle"},{"product":"siebel_core_-_server_framework","vendor":"oracle"},{"product":"webcenter_portal","vendor":"oracle"}],"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:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"The ZlibDecoders in Netty 4.1.x before 4.1.46 allow for unbounded memory allocation while decoding a ZlibEncoded byte stream. An attacker could send a large ZlibEncoded byte stream to the Netty server, forcing the server to allocate all of its free memory to a single decoder.","ecosystems":["Maven","Red Hat:a_mq_clients:2::el6","Red Hat:a_mq_clients:2::el7","Red Hat:a_mq_clients:2::el8"],"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":"Denial of Service in Netty","id":"CVE-2020-11612","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"debian:debian_linux","products":["debian:debian_linux","fedoraproject:fedora","netapp:oncommand_insight","netapp:oncommand_workflow_automation","netty:netty","oracle:webcenter_portal"],"type":"denial_of_service","year":"2020"},"n_packages":62,"n_references":45,"next":{"headline":"Privilege escalation in n/a","id":"CVE-2020-11613"},"packages":[{"ecosystem":"Maven","fixed":["4.1.46"],"introduced":["4.1.0"],"last_affected":[],"package":"io.netty:netty-handler","purl":null,"source":"GHSA-mm9x-g8pc-w292"},{"ecosystem":"Maven","fixed":["4.1.46"],"introduced":["4.1.0"],"last_affected":[],"package":"io.netty:netty-handler","purl":"pkg:maven/io.netty/netty-handler","source":"GHSA-mm9x-g8pc-w292"},{"ecosystem":"Red Hat:a_mq_clients:2::el6","fixed":["0:0.31.0-3.el6_10"],"introduced":["0"],"last_affected":[],"package":"python-qpid-proton","purl":"pkg:rpm/redhat/python-qpid-proton","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el6","fixed":["0:0.31.0-3.el6_10"],"introduced":["0"],"last_affected":[],"package":"python-qpid-proton-docs","purl":"pkg:rpm/redhat/python-qpid-proton-docs","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el6","fixed":["0:1.36.0-30.el6_10amq"],"introduced":["0"],"last_affected":[],"package":"qpid-cpp","purl":"pkg:rpm/redhat/qpid-cpp","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el6","fixed":["0:1.36.0-30.el6_10amq"],"introduced":["0"],"last_affected":[],"package":"qpid-cpp-client","purl":"pkg:rpm/redhat/qpid-cpp-client","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el6","fixed":["0:1.36.0-30.el6_10amq"],"introduced":["0"],"last_affected":[],"package":"qpid-cpp-client-devel","purl":"pkg:rpm/redhat/qpid-cpp-client-devel","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el6","fixed":["0:1.36.0-30.el6_10amq"],"introduced":["0"],"last_affected":[],"package":"qpid-cpp-client-docs","purl":"pkg:rpm/redhat/qpid-cpp-client-docs","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el6","fixed":["0:1.36.0-30.el6_10amq"],"introduced":["0"],"last_affected":[],"package":"qpid-cpp-debuginfo","purl":"pkg:rpm/redhat/qpid-cpp-debuginfo","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el6","fixed":["0:0.31.0-3.el6_10"],"introduced":["0"],"last_affected":[],"package":"qpid-proton","purl":"pkg:rpm/redhat/qpid-proton","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el6","fixed":["0:0.31.0-3.el6_10"],"introduced":["0"],"last_affected":[],"package":"qpid-proton-c","purl":"pkg:rpm/redhat/qpid-proton-c","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el6","fixed":["0:0.31.0-3.el6_10"],"introduced":["0"],"last_affected":[],"package":"qpid-proton-c-devel","purl":"pkg:rpm/redhat/qpid-proton-c-devel","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el6","fixed":["0:0.31.0-3.el6_10"],"introduced":["0"],"last_affected":[],"package":"qpid-proton-c-docs","purl":"pkg:rpm/redhat/qpid-proton-c-docs","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el6","fixed":["0:0.31.0-3.el6_10"],"introduced":["0"],"last_affected":[],"package":"qpid-proton-cpp","purl":"pkg:rpm/redhat/qpid-proton-cpp","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el6","fixed":["0:0.31.0-3.el6_10"],"introduced":["0"],"last_affected":[],"package":"qpid-proton-cpp-devel","purl":"pkg:rpm/redhat/qpid-proton-cpp-devel","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el6","fixed":["0:0.31.0-3.el6_10"],"introduced":["0"],"last_affected":[],"package":"qpid-proton-cpp-docs","purl":"pkg:rpm/redhat/qpid-proton-cpp-docs","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el6","fixed":["0:0.31.0-3.el6_10"],"introduced":["0"],"last_affected":[],"package":"qpid-proton-debuginfo","purl":"pkg:rpm/redhat/qpid-proton-debuginfo","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el6","fixed":["0:0.31.0-3.el6_10"],"introduced":["0"],"last_affected":[],"package":"qpid-proton-tests","purl":"pkg:rpm/redhat/qpid-proton-tests","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el7","fixed":["0:0.31.0-3.el7"],"introduced":["0"],"last_affected":[],"package":"python-qpid-proton","purl":"pkg:rpm/redhat/python-qpid-proton","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el7","fixed":["0:0.31.0-3.el7"],"introduced":["0"],"last_affected":[],"package":"python-qpid-proton-docs","purl":"pkg:rpm/redhat/python-qpid-proton-docs","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el7","fixed":["0:1.36.0-30.el7amq"],"introduced":["0"],"last_affected":[],"package":"qpid-cpp","purl":"pkg:rpm/redhat/qpid-cpp","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el7","fixed":["0:1.36.0-30.el7amq"],"introduced":["0"],"last_affected":[],"package":"qpid-cpp-client","purl":"pkg:rpm/redhat/qpid-cpp-client","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el7","fixed":["0:1.36.0-30.el7amq"],"introduced":["0"],"last_affected":[],"package":"qpid-cpp-client-devel","purl":"pkg:rpm/redhat/qpid-cpp-client-devel","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el7","fixed":["0:1.36.0-30.el7amq"],"introduced":["0"],"last_affected":[],"package":"qpid-cpp-client-docs","purl":"pkg:rpm/redhat/qpid-cpp-client-docs","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el7","fixed":["0:1.36.0-30.el7amq"],"introduced":["0"],"last_affected":[],"package":"qpid-cpp-debuginfo","purl":"pkg:rpm/redhat/qpid-cpp-debuginfo","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el7","fixed":["0:0.31.0-3.el7"],"introduced":["0"],"last_affected":[],"package":"qpid-proton","purl":"pkg:rpm/redhat/qpid-proton","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el7","fixed":["0:0.31.0-3.el7"],"introduced":["0"],"last_affected":[],"package":"qpid-proton-c","purl":"pkg:rpm/redhat/qpid-proton-c","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el7","fixed":["0:0.31.0-3.el7"],"introduced":["0"],"last_affected":[],"package":"qpid-proton-c-devel","purl":"pkg:rpm/redhat/qpid-proton-c-devel","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el7","fixed":["0:0.31.0-3.el7"],"introduced":["0"],"last_affected":[],"package":"qpid-proton-c-docs","purl":"pkg:rpm/redhat/qpid-proton-c-docs","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el7","fixed":["0:0.31.0-3.el7"],"introduced":["0"],"last_affected":[],"package":"qpid-proton-cpp","purl":"pkg:rpm/redhat/qpid-proton-cpp","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el7","fixed":["0:0.31.0-3.el7"],"introduced":["0"],"last_affected":[],"package":"qpid-proton-cpp-devel","purl":"pkg:rpm/redhat/qpid-proton-cpp-devel","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el7","fixed":["0:0.31.0-3.el7"],"introduced":["0"],"last_affected":[],"package":"qpid-proton-cpp-docs","purl":"pkg:rpm/redhat/qpid-proton-cpp-docs","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el7","fixed":["0:0.31.0-3.el7"],"introduced":["0"],"last_affected":[],"package":"qpid-proton-debuginfo","purl":"pkg:rpm/redhat/qpid-proton-debuginfo","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el7","fixed":["0:0.31.0-3.el7"],"introduced":["0"],"last_affected":[],"package":"qpid-proton-tests","purl":"pkg:rpm/redhat/qpid-proton-tests","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el7","fixed":["0:0.31.0-2.el7"],"introduced":["0"],"last_affected":[],"package":"rubygem-qpid_proton","purl":"pkg:rpm/redhat/rubygem-qpid_proton","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el7","fixed":["0:0.31.0-2.el7"],"introduced":["0"],"last_affected":[],"package":"rubygem-qpid_proton-debuginfo","purl":"pkg:rpm/redhat/rubygem-qpid_proton-debuginfo","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el8","fixed":["0:1.0.21-1.el8"],"introduced":["0"],"last_affected":[],"package":"nodejs-rhea","purl":"pkg:rpm/redhat/nodejs-rhea","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el8","fixed":["0:0.31.0-3.el8"],"introduced":["0"],"last_affected":[],"package":"python-qpid-proton-docs","purl":"pkg:rpm/redhat/python-qpid-proton-docs","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el8","fixed":["0:0.31.0-3.el8"],"introduced":["0"],"last_affected":[],"package":"python3-qpid-proton","purl":"pkg:rpm/redhat/python3-qpid-proton","source":"RHSA-2020:2605"},{"ecosystem":"Red Hat:a_mq_clients:2::el8","fixed":["0:0.31.0-3.el8"],"introduced":["0"],"last_affected":[],"package":"python3-qpid-proton-debuginfo","purl":"pkg:rpm/redhat/python3-qpid-proton-debuginfo","source":"RHSA-2020:2605"}],"prev":{"headline":"Open Redirect in xdLocalStorage","id":"CVE-2020-11611"},"products":["n/a"],"published":"2020-04-07","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":"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":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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":"2024-08-04","vendors":["n/a"]},"summary":"An attacker can cause a denial of service by sending a large ZlibEncoded stream, forcing the Netty server to exhaust all available memory.","url":"https://insights.sbomify.com/CVE-2020-11612/"}