{"id":"CVE-2020-24606","details":"Squid before 4.13 and 5.x before 5.0.4 allows a trusted peer to perform Denial of Service by consuming all available CPU cycles during handling of a crafted Cache Digest response message. This only occurs when cache_peer is used with the cache digests feature. The problem exists because peerDigestHandleReply() livelocking in peer_digest.cc mishandles EOF.","modified":"2026-04-16T04:34:33.146751683Z","published":"2020-08-24T18:15:10.047Z","related":["ALSA-2020:4743","GHSA-vvj7-xjgq-g2jg","SUSE-SU-2020:14590-1","SUSE-SU-2020:2442-1","SUSE-SU-2020:2443-1","SUSE-SU-2020:2471-1","openSUSE-SU-2020:1346-1","openSUSE-SU-2020:1369-1","openSUSE-SU-2024:11403-1"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BE6FKUN7IGTIR2MEEMWYDT7N5EJJLZI2/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BMTFLVB7GLRF2CKGFPZ4G4R5DIIPHWI3/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HJJDI7JQFGQLVNCKMVY64LAFMKERAOK7/"},{"type":"ADVISORY","url":"https://github.com/squid-cache/squid/security/advisories/GHSA-vvj7-xjgq-g2jg"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20210226-0007/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4477-1/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2020/dsa-4751"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/10/msg00005.html"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20210219-0007/"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20210226-0006/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4551-1/"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html"},{"type":"FIX","url":"http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_9.patch"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/squid-cache/squid","events":[{"introduced":"0"},{"fixed":"3f5d044d9a4873b3c769d13c43d5d3f9bfe258a3"},{"introduced":"8a511d5e05aa17b47c7566839fd9c524512489d3"},{"fixed":"f4ade365f80fcf9fec62b31f9a4df5e26e42e206"},{"introduced":"0"},{"last_affected":"a3f681bfbc39768cecd7d12271e99f32fe4425e3"},{"introduced":"0"},{"last_affected":"0f67e2aac4a27d0c5ffbfa1dcd89d8abbc7175a7"}],"database_specific":{"versions":[{"introduced":"3.0"},{"fixed":"4.13"},{"introduced":"5.0.1"},{"fixed":"5.0.4"},{"introduced":"0"},{"last_affected":"32"},{"introduced":"0"},{"last_affected":"33"}]}}],"versions":["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-PR324","M-staged-PR330","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_17","SQUID_4_0_18","SQUID_4_0_19","SQUID_4_0_2","SQUID_4_0_20","SQUID_4_0_21","SQUID_4_0_22","SQUID_4_0_23","SQUID_4_0_24","SQUID_4_0_25","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_4_1","SQUID_4_10","SQUID_4_11","SQUID_4_12","SQUID_4_2","SQUID_4_3","SQUID_4_4","SQUID_4_5","SQUID_4_6","SQUID_4_7","SQUID_4_8","SQUID_4_9","SQUID_5_0_1","SQUID_5_0_2","SQUID_5_0_3","take00"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-24606.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"16.04"}]},{"events":[{"introduced":"0"},{"last_affected":"18.04"}]},{"events":[{"introduced":"0"},{"last_affected":"20.04"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]},{"events":[{"introduced":"0"},{"last_affected":"31"}]},{"events":[{"introduced":"0"},{"last_affected":"15.1"}]},{"events":[{"introduced":"0"},{"last_affected":"15.2"}]}]}}],"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"}]}