{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"important"},"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-2021-32780","title":"Title"},{"category":"description","text":"Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions Envoy transitions a H/2 connection to the CLOSED state when it receives a GOAWAY frame without any streams outstanding. The connection state is transitioned to DRAINING when it receives a SETTING frame with the SETTINGS_MAX_CONCURRENT_STREAMS parameter set to 0. Receiving these two frames in the same I/O event results in abnormal termination of the Envoy process due to invalid state transition from CLOSED to DRAINING. A sequence of H/2 frames delivered by an untrusted upstream server will result in Denial of Service in the presence of untrusted **upstream** servers. Envoy versions 1.19.1, 1.18.4 contain fixes to stop processing of pending H/2 frames after connection transition to the CLOSED state.","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-2021-32780","url":"https://www.suse.com/security/cve/CVE-2021-32780"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1189801 for CVE-2021-32780","url":"https://bugzilla.suse.com/1189801"}],"title":"SUSE CVE CVE-2021-32780","tracking":{"current_release_date":"2025-02-17T05:23:01Z","generator":{"date":"2023-02-15T03:40:49Z","engine":{"name":"cve-database.git:bin/generate-csaf-vex.pl","version":"1"}},"id":"CVE-2021-32780","initial_release_date":"2023-02-15T03:40:49Z","revision_history":[{"date":"2023-02-15T03:40:49Z","number":"2","summary":"Current version"},{"date":"2025-01-01T04:25:49Z","number":"3","summary":"Current version"},{"date":"2025-02-15T05:00:25Z","number":"4","summary":"Current version"},{"date":"2025-02-17T05:23:01Z","number":"5","summary":"Current version"}],"status":"interim","version":"5"}}}