{"id":"CVE-2023-5824","details":"A flaw was found in Squid. The limits applied for validation of HTTP response headers are applied before caching. However, Squid may grow a cached HTTP response header beyond the configured maximum size, causing a stall or crash of the worker process when a large header is retrieved from the disk cache, resulting in a denial of service.","modified":"2026-04-16T04:36:10.694270454Z","published":"2023-11-03T08:15:08.270Z","related":["ALSA-2023:7465","ALSA-2023:7668","GHSA-543m-w2m2-g255","openSUSE-SU-2024:13398-1"],"references":[{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/09/msg00027.html"},{"type":"ADVISORY","url":"https://github.com/squid-cache/squid/security/advisories/GHSA-543m-w2m2-g255"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20231130-0003/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:7465"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:7668"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0072"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0772"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:1153"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0397"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0771"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0773"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2023-5824"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2245914"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/squid-cache/squid","events":[{"introduced":"0"},{"fixed":"1d8175b27fc1c347649d4f221ff2633e8d800429"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"6.4"}]}}],"versions":["4.15-20210522-snapshot","4.15-20210523-snapshot","4.15-20210524-snapshot","4.15-20210525-snapshot","4.15-20210527-snapshot","5.0.6-20210522-snapshot","5.0.6-20210523-snapshot","5.0.6-20210524-snapshot","5.0.6-20210525-snapshot","5.0.6-20210527-snapshot","6.0.0-20210522-master-snapshot","6.0.0-20210523-master-snapshot","6.0.0-20210524-master-snapshot","6.0.0-20210525-master-snapshot","6.0.0-20210527-master-snapshot","HISTORIC_RELEASES","M-staged-PR161","M-staged-PR164","M-staged-PR170","M-staged-PR176","M-staged-PR179","M-staged-PR181","M-staged-PR182","M-staged-PR186","M-staged-PR189","M-staged-PR193","M-staged-PR195","M-staged-PR196","M-staged-PR198","M-staged-PR199","M-staged-PR200","M-staged-PR202","M-staged-PR206","M-staged-PR208","M-staged-PR209","M-staged-PR210","M-staged-PR218","M-staged-PR220","M-staged-PR221","M-staged-PR225","M-staged-PR227","M-staged-PR229","M-staged-PR230","M-staged-PR235","M-staged-PR237","M-staged-PR238","M-staged-PR239","M-staged-PR241","M-staged-PR242","M-staged-PR252","M-staged-PR255","M-staged-PR258","M-staged-PR264","M-staged-PR266","M-staged-PR267","M-staged-PR268","M-staged-PR274","M-staged-PR276","M-staged-PR293","M-staged-PR294","M-staged-PR295","M-staged-PR299","M-staged-PR306","M-staged-PR314","M-staged-PR319","M-staged-PR342","M-staged-PR345","M-staged-PR348","M-staged-PR351","M-staged-PR359","M-staged-PR364","M-staged-PR365","M-staged-PR366","M-staged-PR370","M-staged-PR372","M-staged-PR373","M-staged-PR375","M-staged-PR376","SQUID_3_0_PRE1","SQUID_3_0_PRE2","SQUID_3_0_PRE3","SQUID_3_0_PRE4","SQUID_3_0_PRE5","SQUID_3_0_PRE6","SQUID_3_0_PRE7","SQUID_3_0_RC1","SQUID_3_5_27","SQUID_4_0_1","SQUID_4_0_10","SQUID_4_0_11","SQUID_4_0_12","SQUID_4_0_13","SQUID_4_0_14","SQUID_4_0_15","SQUID_4_0_16","SQUID_4_0_2","SQUID_4_0_3","SQUID_4_0_4","SQUID_4_0_5","SQUID_4_0_6","SQUID_4_0_7","SQUID_4_0_8","SQUID_4_0_9","SQUID_6_0_1","SQUID_6_0_2","SQUID_6_0_3","SQUID_6_1","SQUID_6_2","SQUID_6_3","take00"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-5824.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"6.0"}]},{"events":[{"introduced":"0"},{"last_affected":"7.0"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}