{"id":"RLSA-2023:5989","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":"2026-02-04T07:40:21.958313Z","published":"2023-10-24T18:35:47.290826Z","upstream":["CVE-2023-44487"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2023:5989"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2242803"}],"affected":[{"package":{"name":"varnish","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/varnish?distro=rocky-linux-8&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:6.0.8-3.module+el8.8.0+1552+3570c668.1"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2023:5989.json"}},{"package":{"name":"varnish-modules","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/varnish-modules?distro=rocky-linux-8&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:0.15.0-6.module+el8.5.0+677+2a78a869"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2023:5989.json"}}],"schema_version":"1.7.3","credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}