{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"important"},"category":"csaf_security_advisory","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":"Security update for rubygem-puma","title":"Title of the patch"},{"category":"description","text":"This update for rubygem-puma fixes the following issues:\n\n- CVE-2021-29509: Incomplete fix for CVE-2019-16770 allows Denial of Service (bsc#1188527)\n","title":"Description of the patch"},{"category":"details","text":"SUSE-2021-2761,SUSE-OpenStack-Cloud-Crowbar-8-2021-2761","title":"Patchnames"},{"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":"SUSE ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"self","summary":"URL of this CSAF notice","url":"https://ftp.suse.com/pub/projects/security/csaf/suse-su-2021_2761-1.json"},{"category":"self","summary":"URL for SUSE-SU-2021:2761-1","url":"https://www.suse.com/support/update/announcement/2021/suse-su-20212761-1/"},{"category":"self","summary":"E-Mail link for SUSE-SU-2021:2761-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2021-August/009303.html"},{"category":"self","summary":"SUSE Bug 1188527","url":"https://bugzilla.suse.com/1188527"},{"category":"self","summary":"SUSE CVE CVE-2021-29509 page","url":"https://www.suse.com/security/cve/CVE-2021-29509/"}],"title":"Security update for rubygem-puma","tracking":{"current_release_date":"2021-08-17T15:12:24Z","generator":{"date":"2021-08-17T15:12:24Z","engine":{"name":"cve-database.git:bin/generate-csaf.pl","version":"1"}},"id":"SUSE-SU-2021:2761-1","initial_release_date":"2021-08-17T15:12:24Z","revision_history":[{"date":"2021-08-17T15:12:24Z","number":"1","summary":"Current version"}],"status":"final","version":"1"}},"product_tree":{"branches":[{"branches":[{"branches":[{"category":"product_version","name":"ruby2.1-rubygem-puma-2.16.0-3.12.1.aarch64","product":{"name":"ruby2.1-rubygem-puma-2.16.0-3.12.1.aarch64","product_id":"ruby2.1-rubygem-puma-2.16.0-3.12.1.aarch64"}},{"category":"product_version","name":"ruby2.1-rubygem-puma-doc-2.16.0-3.12.1.aarch64","product":{"name":"ruby2.1-rubygem-puma-doc-2.16.0-3.12.1.aarch64","product_id":"ruby2.1-rubygem-puma-doc-2.16.0-3.12.1.aarch64"}}],"category":"architecture","name":"aarch64"},{"branches":[{"category":"product_version","name":"ruby2.1-rubygem-puma-2.16.0-3.12.1.ppc64le","product":{"name":"ruby2.1-rubygem-puma-2.16.0-3.12.1.ppc64le","product_id":"ruby2.1-rubygem-puma-2.16.0-3.12.1.ppc64le"}},{"category":"product_version","name":"ruby2.1-rubygem-puma-doc-2.16.0-3.12.1.ppc64le","product":{"name":"ruby2.1-rubygem-puma-doc-2.16.0-3.12.1.ppc64le","product_id":"ruby2.1-rubygem-puma-doc-2.16.0-3.12.1.ppc64le"}}],"category":"architecture","name":"ppc64le"},{"branches":[{"category":"product_version","name":"ruby2.1-rubygem-puma-2.16.0-3.12.1.s390x","product":{"name":"ruby2.1-rubygem-puma-2.16.0-3.12.1.s390x","product_id":"ruby2.1-rubygem-puma-2.16.0-3.12.1.s390x"}},{"category":"product_version","name":"ruby2.1-rubygem-puma-doc-2.16.0-3.12.1.s390x","product":{"name":"ruby2.1-rubygem-puma-doc-2.16.0-3.12.1.s390x","product_id":"ruby2.1-rubygem-puma-doc-2.16.0-3.12.1.s390x"}}],"category":"architecture","name":"s390x"},{"branches":[{"category":"product_version","name":"ruby2.1-rubygem-puma-2.16.0-3.12.1.x86_64","product":{"name":"ruby2.1-rubygem-puma-2.16.0-3.12.1.x86_64","product_id":"ruby2.1-rubygem-puma-2.16.0-3.12.1.x86_64"}},{"category":"product_version","name":"ruby2.1-rubygem-puma-doc-2.16.0-3.12.1.x86_64","product":{"name":"ruby2.1-rubygem-puma-doc-2.16.0-3.12.1.x86_64","product_id":"ruby2.1-rubygem-puma-doc-2.16.0-3.12.1.x86_64"}}],"category":"architecture","name":"x86_64"},{"branches":[{"category":"product_name","name":"SUSE OpenStack Cloud Crowbar 8","product":{"name":"SUSE OpenStack Cloud Crowbar 8","product_id":"SUSE OpenStack Cloud Crowbar 8","product_identification_helper":{"cpe":"cpe:/o:suse:suse-openstack-cloud-crowbar:8"}}}],"category":"product_family","name":"SUSE Linux Enterprise"}],"category":"vendor","name":"SUSE"}],"relationships":[{"category":"default_component_of","full_product_name":{"name":"ruby2.1-rubygem-puma-2.16.0-3.12.1.x86_64 as component of SUSE OpenStack Cloud Crowbar 8","product_id":"SUSE OpenStack Cloud Crowbar 8:ruby2.1-rubygem-puma-2.16.0-3.12.1.x86_64"},"product_reference":"ruby2.1-rubygem-puma-2.16.0-3.12.1.x86_64","relates_to_product_reference":"SUSE OpenStack Cloud Crowbar 8"}]},"vulnerabilities":[{"cve":"CVE-2021-29509","ids":[{"system_name":"SUSE CVE Page","text":"https://www.suse.com/security/cve/CVE-2021-29509"}],"notes":[{"category":"general","text":"Puma is a concurrent HTTP 1.1 server for Ruby/Rack applications. The fix for CVE-2019-16770 was incomplete. The original fix only protected existing connections that had already been accepted from having their requests starved by greedy persistent-connections saturating all threads in the same process. However, new connections may still be starved by greedy persistent-connections saturating all threads in all processes in the cluster. A `puma` server which received more concurrent `keep-alive` connections than the server had threads in its threadpool would service only a subset of connections, denying service to the unserved connections. This problem has been fixed in `puma` 4.3.8 and 5.3.1. Setting `queue_requests false` also fixes the issue. This is not advised when using `puma` without a reverse proxy, such as `nginx` or `apache`, because you will open yourself to slow client attacks (e.g. slowloris). The fix is very small and a git patch is available for those using unsupported versions of Puma.","title":"CVE description"}],"product_status":{"recommended":["SUSE OpenStack Cloud Crowbar 8:ruby2.1-rubygem-puma-2.16.0-3.12.1.x86_64"]},"references":[{"category":"external","summary":"CVE-2021-29509","url":"https://www.suse.com/security/cve/CVE-2021-29509"},{"category":"external","summary":"SUSE Bug 1188527 for CVE-2021-29509","url":"https://bugzilla.suse.com/1188527"}],"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 OpenStack Cloud Crowbar 8:ruby2.1-rubygem-puma-2.16.0-3.12.1.x86_64"]}],"scores":[{"cvss_v3":{"baseScore":7.5,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"products":["SUSE OpenStack Cloud Crowbar 8:ruby2.1-rubygem-puma-2.16.0-3.12.1.x86_64"]}],"threats":[{"category":"impact","date":"2021-08-17T15:12:24Z","details":"important"}],"title":"CVE-2021-29509"}]}