Security update for rubygem-puma SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2025:03466-1 Final 1 1 2025-10-07T11:33:53Z current 2025-10-07T11:33:53Z 2025-10-07T11:33:53Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for rubygem-puma This update for rubygem-puma fixes the following issues: Update to version 5.6.9. - CVE-2024-45614: improper header normalization allows for clients to clobber proxy set headers, which can lead to information leaks (bsc#1230848, fixed in an earlier update). - CVE-2024-21647: unbounded resource consumption due to invalid parsing of chunked encoding in HTTP/1.1 can lead to denial-of-service attacks (bsc#1218638, fixed in an earlier update) - CVE-2023-40175: incorrect behavior when parsing chunked transfer encoding bodies and zero-length Content-Length headers can lead to HTTP request smuggling attacks (bsc#1214425, fixed in an earlier update). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2025-3466,SUSE-SLE-Product-HA-15-SP3-2025-3466,SUSE-SLE-Product-HA-15-SP4-2025-3466,SUSE-SLE-Product-HA-15-SP5-2025-3466 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2025/suse-su-202503466-1/ Link for SUSE-SU-2025:03466-1 https://lists.suse.com/pipermail/sle-updates/2025-October/042013.html E-Mail link for SUSE-SU-2025:03466-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1214425 SUSE Bug 1214425 https://bugzilla.suse.com/1218638 SUSE Bug 1218638 https://bugzilla.suse.com/1230848 SUSE Bug 1230848 https://www.suse.com/security/cve/CVE-2023-40175/ SUSE CVE CVE-2023-40175 page https://www.suse.com/security/cve/CVE-2024-21647/ SUSE CVE CVE-2024-21647 page https://www.suse.com/security/cve/CVE-2024-45614/ SUSE CVE CVE-2024-45614 page SUSE Linux Enterprise High Availability Extension 15 SP3 SUSE Linux Enterprise High Availability Extension 15 SP4 SUSE Linux Enterprise High Availability Extension 15 SP5 ruby2.5-rubygem-puma-5.6.9-150000.3.18.1 ruby2.5-rubygem-puma-doc-5.6.9-150000.3.18.1 ruby2.5-rubygem-puma-5.6.9-150000.3.18.1 as a component of SUSE Linux Enterprise High Availability Extension 15 SP3 ruby2.5-rubygem-puma-5.6.9-150000.3.18.1 as a component of SUSE Linux Enterprise High Availability Extension 15 SP4 ruby2.5-rubygem-puma-5.6.9-150000.3.18.1 as a component of SUSE Linux Enterprise High Availability Extension 15 SP5 Puma is a Ruby/Rack web server built for parallelism. Prior to versions 6.3.1 and 5.6.7, puma exhibited incorrect behavior when parsing chunked transfer encoding bodies and zero-length Content-Length headers in a way that allowed HTTP request smuggling. Severity of this issue is highly dependent on the nature of the web site using puma is. This could be caused by either incorrect parsing of trailing fields in chunked transfer encoding bodies or by parsing of blank/zero-length Content-Length headers. Both issues have been addressed and this vulnerability has been fixed in versions 6.3.1 and 5.6.7. Users are advised to upgrade. There are no known workarounds for this vulnerability. CVE-2023-40175 SUSE Linux Enterprise High Availability Extension 15 SP3:ruby2.5-rubygem-puma-5.6.9-150000.3.18.1 SUSE Linux Enterprise High Availability Extension 15 SP4:ruby2.5-rubygem-puma-5.6.9-150000.3.18.1 SUSE Linux Enterprise High Availability Extension 15 SP5:ruby2.5-rubygem-puma-5.6.9-150000.3.18.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-202503466-1/ https://www.suse.com/security/cve/CVE-2023-40175.html CVE-2023-40175 https://bugzilla.suse.com/1214425 SUSE Bug 1214425 Puma is a web server for Ruby/Rack applications built for parallelism. Prior to version 6.4.2, puma exhibited incorrect behavior when parsing chunked transfer encoding bodies in a way that allowed HTTP request smuggling. Fixed versions limits the size of chunk extensions. Without this limit, an attacker could cause unbounded resource (CPU, network bandwidth) consumption. This vulnerability has been fixed in versions 6.4.2 and 5.6.8. CVE-2024-21647 SUSE Linux Enterprise High Availability Extension 15 SP3:ruby2.5-rubygem-puma-5.6.9-150000.3.18.1 SUSE Linux Enterprise High Availability Extension 15 SP4:ruby2.5-rubygem-puma-5.6.9-150000.3.18.1 SUSE Linux Enterprise High Availability Extension 15 SP5:ruby2.5-rubygem-puma-5.6.9-150000.3.18.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-202503466-1/ https://www.suse.com/security/cve/CVE-2024-21647.html CVE-2024-21647 https://bugzilla.suse.com/1218638 SUSE Bug 1218638 Puma is a Ruby/Rack web server built for parallelism. In affected versions clients could clobber values set by intermediate proxies (such as X-Forwarded-For) by providing a underscore version of the same header (X-Forwarded_For). Any users relying on proxy set variables is affected. v6.4.3/v5.6.9 now discards any headers using underscores if the non-underscore version also exists. Effectively, allowing the proxy defined headers to always win. Users are advised to upgrade. Nginx has a underscores_in_headers configuration variable to discard these headers at the proxy level as a mitigation. Any users that are implicitly trusting the proxy defined headers for security should immediately cease doing so until upgraded to the fixed versions. CVE-2024-45614 SUSE Linux Enterprise High Availability Extension 15 SP3:ruby2.5-rubygem-puma-5.6.9-150000.3.18.1 SUSE Linux Enterprise High Availability Extension 15 SP4:ruby2.5-rubygem-puma-5.6.9-150000.3.18.1 SUSE Linux Enterprise High Availability Extension 15 SP5:ruby2.5-rubygem-puma-5.6.9-150000.3.18.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-202503466-1/ https://www.suse.com/security/cve/CVE-2024-45614.html CVE-2024-45614 https://bugzilla.suse.com/1230848 SUSE Bug 1230848