CVE-2021-43797 SUSE CVE security@suse.de SUSE Security Team SUSE CVE-2021-43797 Interim 1 39 2025-12-23T03:10:41Z current 2021-12-14T02:19:12Z 2025-12-23T03:10:41Z cve-database/bin/generate-cvrf-cve.pl 2020-12-27T01:00:00Z CVE-2021-43797 Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. Netty prior to version 4.1.71.Final skips control chars when they are present at the beginning / end of the header name. It should instead fail fast as these are not allowed by the spec and could lead to HTTP request smuggling. Failing to do the validation might cause netty to "sanitize" header names before it forward these to another remote system when used as proxy. This remote system can't see the invalid usage anymore, and therefore does not do the validation itself. Users should upgrade to version 4.1.71.Final. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). https://lists.suse.com/pipermail/sle-security-updates/2022-April/010773.html E-Mail link for SUSE-SU-2022:1271-1 https://lists.suse.com/pipermail/sle-security-updates/2022-June/011268.html E-Mail link for SUSE-SU-2022:2047-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings Container suse/manager/5.0/x86_64/server:5.0.0-beta1.2.122 Container suse/multi-linux-manager/5.1/x86_64/server:5.1.0.6.40 Image server-image SUSE Linux Enterprise Module for Development Tools 15 SP3 SUSE Linux Enterprise Module for Development Tools 15 SP3 SUSE Linux Enterprise Module for Development Tools 15 SP4 SUSE Linux Enterprise Module for Development Tools 15 SP5 SUSE Linux Enterprise Module for Development Tools 15 SP6 SUSE Linux Enterprise Module for Development Tools 15 SP7 SUSE Linux Enterprise Module for Development Tools 15 SP3 SUSE Linux Enterprise Module for Development Tools 15 SP4 SUSE Linux Enterprise Module for Development Tools 15 SP5 SUSE Linux Enterprise Module for Development Tools 15 SP6 SUSE Linux Enterprise Module for Development Tools 15 SP7 SUSE Linux Enterprise Module for Package Hub 15 SP5 SUSE Linux Enterprise Module for Package Hub 15 SP6 SUSE Linux Enterprise Module for Package Hub 15 SP7 SUSE Linux Enterprise Module for Development Tools 15 SP3 SUSE Linux Enterprise Module for Development Tools 15 SP4 SUSE Linux Enterprise Server 15 SP4-TERADATA SUSE Linux Enterprise Module for Development Tools 15 SP5 SUSE Linux Enterprise Module for Development Tools 15 SP6 SUSE Linux Enterprise Module for Development Tools 15 SP7 SUSE Linux Enterprise Module for Development Tools 15 SP3 SUSE Linux Enterprise Module for Development Tools 15 SP4 SUSE Linux Enterprise Module for Development Tools 15 SP5 SUSE Linux Enterprise Module for Development Tools 15 SP6 SUSE Linux Enterprise Module for Development Tools 15 SP7 SUSE Linux Enterprise Module for Development Tools 15 SP3 SUSE Linux Enterprise Module for Development Tools 15 SP4 SUSE Linux Enterprise Module for Development Tools 15 SP3 SUSE Linux Enterprise Module for Development Tools 15 SP4 SUSE Linux Enterprise Module for Development Tools 15 SP3 SUSE Linux Enterprise Module for Development Tools 15 SP4 SUSE Manager Server Module 4.1 SUSE Manager Server Module 4.2 SUSE Manager Server Module 4.3 openSUSE Leap 15.3 openSUSE Leap 15.4 openSUSE Tumbleweed netty netty-4.1.72-1.1 netty-4.1.75-150200.4.6.2 netty-javadoc-4.1.72-1.1 netty-javadoc-4.1.75-150200.4.6.2 netty-poms-4.1.72-1.1 netty-poms-4.1.75-150200.4.6.2 netty3-3.10.6-150200.3.3.2 netty3-3.10.6-9.1 netty3-javadoc-3.10.6-150200.3.3.2 netty3-javadoc-3.10.6-9.1 netty-4.1.75-150200.4.6.2 as a component of Container suse/manager/5.0/x86_64/server:5.0.0-beta1.2.122 netty-4.1.75-150200.4.6.2 as a component of Container suse/multi-linux-manager/5.1/x86_64/server:5.1.0.6.40 netty-4.1.75-150200.4.6.2 as a component of Image server-image netty3-3.10.6-150200.3.3.2 as a component of SUSE Linux Enterprise Module for Development Tools 15 SP3 netty3-3.10.6-150200.3.3.2 as a component of SUSE Linux Enterprise Module for Development Tools 15 SP4 netty3-3.10.6-150200.3.3.2 as a component of SUSE Linux Enterprise Module for Development Tools 15 SP5 netty3-3.10.6-150200.3.3.2 as a component of SUSE Linux Enterprise Module for Development Tools 15 SP6 netty3-3.10.6-150200.3.3.2 as a component of SUSE Linux Enterprise Module for Development Tools 15 SP7 netty-4.1.75-150200.4.6.2 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP5 netty-4.1.75-150200.4.6.2 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP6 netty-4.1.75-150200.4.6.2 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP7 netty3-3.10.6-150200.3.3.2 as a component of SUSE Linux Enterprise Server 15 SP4-TERADATA netty-4.1.75-150200.4.6.2 as a component of openSUSE Leap 15.3 netty-javadoc-4.1.75-150200.4.6.2 as a component of openSUSE Leap 15.3 netty-poms-4.1.75-150200.4.6.2 as a component of openSUSE Leap 15.3 netty3-3.10.6-150200.3.3.2 as a component of openSUSE Leap 15.3 netty3-javadoc-3.10.6-150200.3.3.2 as a component of openSUSE Leap 15.3 netty3-3.10.6-150200.3.3.2 as a component of openSUSE Leap 15.4 netty3-javadoc-3.10.6-150200.3.3.2 as a component of openSUSE Leap 15.4 netty-4.1.72-1.1 as a component of openSUSE Tumbleweed netty-javadoc-4.1.72-1.1 as a component of openSUSE Tumbleweed netty-poms-4.1.72-1.1 as a component of openSUSE Tumbleweed netty3-3.10.6-9.1 as a component of openSUSE Tumbleweed netty3-javadoc-3.10.6-9.1 as a component of openSUSE Tumbleweed netty as a component of SUSE Manager Server Module 4.1 netty as a component of SUSE Manager Server Module 4.2 netty as a component of SUSE Manager Server Module 4.3 Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. Netty prior to version 4.1.71.Final skips control chars when they are present at the beginning / end of the header name. It should instead fail fast as these are not allowed by the spec and could lead to HTTP request smuggling. Failing to do the validation might cause netty to "sanitize" header names before it forward these to another remote system when used as proxy. This remote system can't see the invalid usage anymore, and therefore does not do the validation itself. Users should upgrade to version 4.1.71.Final. CVE-2021-43797 Container suse/manager/5.0/x86_64/server:5.0.0-beta1.2.122:netty-4.1.75-150200.4.6.2 Container suse/multi-linux-manager/5.1/x86_64/server:5.1.0.6.40:netty-4.1.75-150200.4.6.2 Image server-image:netty-4.1.75-150200.4.6.2 SUSE Linux Enterprise Module for Development Tools 15 SP3:netty3-3.10.6-150200.3.3.2 SUSE Linux Enterprise Module for Development Tools 15 SP4:netty3-3.10.6-150200.3.3.2 SUSE Linux Enterprise Module for Development Tools 15 SP5:netty3-3.10.6-150200.3.3.2 SUSE Linux Enterprise Module for Development Tools 15 SP6:netty3-3.10.6-150200.3.3.2 SUSE Linux Enterprise Module for Development Tools 15 SP7:netty3-3.10.6-150200.3.3.2 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP4:netty-4.1.75-150200.4.6.2 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP5:netty-4.1.75-150200.4.6.2 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP5:netty3-javadoc-3.10.6-150200.3.3.2 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP6:netty-4.1.75-150200.4.6.2 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP6:netty3-javadoc-3.10.6-150200.3.3.2 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP7:netty-4.1.75-150200.4.6.2 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP7:netty3-javadoc-3.10.6-150200.3.3.2 SUSE Linux Enterprise Module for Package Hub 15 SP5:netty-4.1.75-150200.4.6.2 SUSE Linux Enterprise Module for Package Hub 15 SP6:netty-4.1.75-150200.4.6.2 SUSE Linux Enterprise Module for Package Hub 15 SP7:netty-4.1.75-150200.4.6.2 SUSE Linux Enterprise Server 15 SP4-TERADATA:netty3-3.10.6-150200.3.3.2 openSUSE Leap 15.3:netty-4.1.75-150200.4.6.2 openSUSE Leap 15.3:netty-javadoc-4.1.75-150200.4.6.2 openSUSE Leap 15.3:netty-poms-4.1.75-150200.4.6.2 openSUSE Leap 15.3:netty3-3.10.6-150200.3.3.2 openSUSE Leap 15.3:netty3-javadoc-3.10.6-150200.3.3.2 openSUSE Leap 15.4:netty3-3.10.6-150200.3.3.2 openSUSE Leap 15.4:netty3-javadoc-3.10.6-150200.3.3.2 openSUSE Tumbleweed:netty-4.1.72-1.1 openSUSE Tumbleweed:netty-javadoc-4.1.72-1.1 openSUSE Tumbleweed:netty-poms-4.1.72-1.1 openSUSE Tumbleweed:netty3-3.10.6-9.1 openSUSE Tumbleweed:netty3-javadoc-3.10.6-9.1 SUSE Manager Server Module 4.1:netty SUSE Manager Server Module 4.2:netty SUSE Manager Server Module 4.3:netty moderate 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N