{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"moderate"},"category":"csaf_vex","csaf_version":"2.0","distribution":{"text":"Copyright 2024 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"SUSE CVE-2021-21409","title":"Title"},{"category":"description","text":"Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty (io.netty:netty-codec-http2) before version 4.1.61.Final there is a vulnerability that enables request smuggling. The content-length header is not correctly validated if the request only uses a single Http2HeaderFrame with the endStream set to to true. This could lead to request smuggling if the request is proxied to a remote peer and translated to HTTP/1.1. This is a followup of GHSA-wm47-8v5p-wjpj/CVE-2021-21295 which did miss to fix this one case. This was fixed as part of 4.1.61.Final.","title":"Description of the CVE"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"external","summary":"CVE-2021-21409","url":"https://www.suse.com/security/cve/CVE-2021-21409"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1184203 for CVE-2021-21409","url":"https://bugzilla.suse.com/1184203"},{"category":"external","summary":"Advisory link for SUSE-SU-2022:1315-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2022-April/010800.html"},{"category":"external","summary":"Advisory link for openSUSE-SU-2024:14442-1","url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/TNFN6MBU4SQLAGX7GNFLRGTPGY3IBHZG/"}],"title":"SUSE CVE CVE-2021-21409","tracking":{"current_release_date":"2025-08-12T23:43:10Z","generator":{"date":"2023-02-15T03:46:14Z","engine":{"name":"cve-database.git:bin/generate-csaf-vex.pl","version":"1"}},"id":"CVE-2021-21409","initial_release_date":"2023-02-15T03:46:14Z","revision_history":[{"date":"2023-02-15T03:46:14Z","number":"2","summary":"Current version"},{"date":"2024-11-12T01:42:47Z","number":"3","summary":"Current version"},{"date":"2025-01-01T04:45:49Z","number":"4","summary":"Current version"},{"date":"2025-01-10T02:50:51Z","number":"5","summary":"Current version"},{"date":"2025-02-15T05:20:15Z","number":"6","summary":"Current version"},{"date":"2025-02-17T05:46:18Z","number":"7","summary":"Current version"},{"date":"2025-03-15T09:10:48Z","number":"8","summary":"Current version"},{"date":"2025-04-02T09:39:29Z","number":"9","summary":"Current version"},{"date":"2025-05-17T05:43:37Z","number":"10","summary":"Current version"},{"date":"2025-06-26T04:15:43Z","number":"11","summary":"Current version"},{"date":"2025-07-01T01:03:37Z","number":"12","summary":"Current version"},{"date":"2025-08-12T23:43:10Z","number":"13","summary":"Current version"}],"status":"interim","version":"13"}},"product_tree":{"branches":[{"branches":[{"branches":[{"category":"product_name","name":"SUSE CaaS Platform 4.5","product":{"name":"SUSE CaaS Platform 4.5","product_id":"SUSE CaaS Platform 4.5","product_identification_helper":{"cpe":"cpe:/o:suse:caasp:4.5"}}},{"category":"product_name","name":"SUSE Enterprise Storage 7","product":{"name":"SUSE Enterprise Storage 7","product_id":"SUSE Enterprise Storage 7","product_identification_helper":{"cpe":"cpe:/o:suse:ses:7"}}},{"category":"product_name","name":"SUSE Enterprise Storage 7.1","product":{"name":"SUSE Enterprise Storage 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In Netty (io.netty:netty-codec-http2) before version 4.1.61.Final there is a vulnerability that enables request smuggling. The content-length header is not correctly validated if the request only uses a single Http2HeaderFrame with the endStream set to to true. This could lead to request smuggling if the request is proxied to a remote peer and translated to HTTP/1.1. This is a followup of GHSA-wm47-8v5p-wjpj/CVE-2021-21295 which did miss to fix this one case. This was fixed as part of 4.1.61.Final.","title":"CVE description"}],"product_status":{"known_not_affected":["SUSE CaaS Platform 4.5:netty3","SUSE Enterprise Storage 7.1:netty3","SUSE Enterprise Storage 7:netty3","SUSE Linux Enterprise Desktop 15 SP2:netty3","SUSE Linux Enterprise Desktop 15 SP3:netty3","SUSE Linux Enterprise Desktop 15 SP4:netty3","SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS:netty3","SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS:netty3","SUSE Linux Enterprise High Performance Computing 15 SP2:netty3","SUSE Linux Enterprise High Performance Computing 15 SP3:netty3","SUSE Linux Enterprise High Performance Computing 15 SP4:netty3","SUSE Linux Enterprise Module for Development Tools 15 SP2:netty3","SUSE Linux Enterprise Module for Development Tools 15 SP3:netty3","SUSE Linux Enterprise Module for Development Tools 15 SP4:netty3","SUSE Linux Enterprise Real Time 15 SP2:netty3","SUSE Linux Enterprise Server 15 SP2-LTSS:netty3","SUSE Linux 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Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1184203 for CVE-2021-21409","url":"https://bugzilla.suse.com/1184203"},{"category":"external","summary":"Advisory link for SUSE-SU-2022:1315-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2022-April/010800.html"},{"category":"external","summary":"Advisory link for openSUSE-SU-2024:14442-1","url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/TNFN6MBU4SQLAGX7GNFLRGTPGY3IBHZG/"}],"remediations":[{"category":"vendor_fix","details":"To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n","product_ids":["SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP4:netty-4.1.75-150200.4.9.1","SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP5:netty-4.1.75-150200.4.9.1","SUSE Linux Enterprise Module for Open 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