{"id":"RLSA-2023:5924","summary":"Important: varnish security update","details":"Varnish Cache is a high-performance HTTP accelerator. It stores web pages in memory so web servers don't have to create the same web page over and over again, giving the website a significant speed up.\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":"2026-02-04T09:00:08.822175Z","published":"2023-10-24T18:36:42.822571Z","upstream":["CVE-2023-44487"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2023:5924"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2242803"}],"affected":[{"package":{"name":"varnish","ecosystem":"Rocky Linux:9","purl":"pkg:rpm/rocky-linux/varnish?distro=rocky-linux-9&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:6.6.2-3.el9_2.1"}],"database_specific":{"yum_repository":"CRB"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2023:5924.json"}}],"schema_version":"1.7.3","credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}