{"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.","aliases":["GHSA-vvj7-xjgq-g2jg"],"modified":"2026-07-07T08:50:43.256512560Z","published":"2020-08-24T18:15:10.047Z","related":["ALSA-2020:4743","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"],"database_specific":{"unresolved_ranges":[{"extracted_events":[{"introduced":"16.04"},{"last_affected":"16.04"},{"introduced":"18.04"},{"last_affected":"18.04"},{"introduced":"20.04"},{"last_affected":"20.04"}],"source":"CPE_STRING","vendor_product":"canonical:ubuntu_linux","cpes":["cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*","cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*","cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*"]},{"extracted_events":[{"introduced":"9.0"},{"last_affected":"9.0"},{"introduced":"10.0"},{"last_affected":"10.0"}],"source":"CPE_STRING","vendor_product":"debian:debian_linux","cpes":["cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*","cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"]},{"source":"CPE_STRING","vendor_product":"fedoraproject:fedora","cpes":["cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*","cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*","cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"31"},{"last_affected":"31"},{"introduced":"32"},{"last_affected":"32"},{"introduced":"33"},{"last_affected":"33"}]},{"source":"CPE_STRING","vendor_product":"opensuse:leap","cpes":["cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*","cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"15.1"},{"last_affected":"15.1"},{"introduced":"15.2"},{"last_affected":"15.2"}]}]},"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":"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":"ADVISORY","url":"https://github.com/squid-cache/squid/security/advisories/GHSA-vvj7-xjgq-g2jg"},{"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://security.netapp.com/advisory/ntap-20210226-0007/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4477-1/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4551-1/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2020/dsa-4751"},{"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"}],"database_specific":{"cpe":"cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"3.0"},{"fixed":"4.13"},{"introduced":"5.0.1"},{"fixed":"5.0.4"}],"source":"CPE_RANGE"}}],"versions":["SQUID_4_12","SQUID_5_0_3","SQUID_5_0_2","SQUID_4_11","SQUID_5_0_1","SQUID_4_10","SQUID_4_9","SQUID_4_8","SQUID_4_7","SQUID_4_6","SQUID_4_5","SQUID_4_4","SQUID_4_3","SQUID_4_2","SQUID_4_1","SQUID_4_0_25","SQUID_4_0_24","SQUID_4_0_23","SQUID_4_0_22","SQUID_4_0_21","SQUID_4_0_20","SQUID_4_0_19","SQUID_4_0_18","SQUID_4_0_17","SQUID_4_0_16","SQUID_4_0_15","SQUID_4_0_14","SQUID_4_0_13","SQUID_4_0_12","SQUID_4_0_11","SQUID_4_0_10","SQUID_4_0_9","SQUID_4_0_8","SQUID_4_0_7","SQUID_4_0_6","SQUID_4_0_5","SQUID_4_0_4","SQUID_4_0_3","SQUID_4_0_2","SQUID_4_0_1","take00","SQUID_3_0_RC1","SQUID_3_0_PRE7","SQUID_3_0_PRE6","SQUID_3_0_PRE5","SQUID_3_0_PRE4","SQUID_3_0_PRE3","SQUID_3_0_PRE2","SQUID_3_0_PRE1","HISTORIC_RELEASES"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-24606.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}