{"id":"ALSA-2023:5837","summary":"Important: nghttp2 security update","details":"nghttp2 contains the Hypertext Transfer Protocol version 2 (HTTP/2) client, server, and proxy programs as well as a library implementing the HTTP/2 protocol in C.\n\nSecurity Fix(es):\n\n* HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack) (CVE-2023-44487)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","modified":"2026-02-04T03:06:36.309894Z","published":"2023-10-18T00:00:00Z","related":["CVE-2023-44487"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:5837"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-44487"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2242803"},{"type":"ADVISORY","url":"https://errata.almalinux.org/8/ALSA-2023-5837.html"}],"affected":[{"package":{"name":"libnghttp2","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/libnghttp2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.33.0-5.el8_8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:5837.json"}},{"package":{"name":"libnghttp2-devel","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/libnghttp2-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.33.0-5.el8_8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:5837.json"}},{"package":{"name":"nghttp2","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/nghttp2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.33.0-5.el8_8"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2023:5837.json"}}],"schema_version":"1.7.3"}