{"id":"CVE-2020-15049","details":"An issue was discovered in http/ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3. A Request Smuggling and Poisoning attack can succeed against the HTTP cache. The client sends an HTTP request with a Content-Length header containing \"+\\ \"-\" or an uncommon shell whitespace character prefix to the length field-value.","aliases":["GHSA-qf3v-rc95-96j5"],"modified":"2026-07-08T05:59:30.597713508Z","published":"2020-06-30T18:15:12.367Z","related":["ALSA-2020:4743","SUSE-SU-2020:14460-1","SUSE-SU-2020:1946-1","SUSE-SU-2020:2442-1","SUSE-SU-2020:2443-1","openSUSE-SU-2020:1346-1","openSUSE-SU-2020:1369-1","openSUSE-SU-2024:11403-1"],"database_specific":{"unresolved_ranges":[{"source":"CPE_RANGE","vendor_product":"squid-cache:squid","cpes":["cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"2.0"},{"last_affected":"2.6"}]},{"extracted_events":[{"introduced":"31"},{"last_affected":"31"}],"source":"CPE_STRING","vendor_product":"fedoraproject:fedora","cpes":["cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*"]},{"cpes":["cpe:2.3:a:squid-cache:squid:2.7:*:*:*:*:*:*:*","cpe:2.3:a:squid-cache:squid:2.7:stable2:*:*:*:*:*:*","cpe:2.3:a:squid-cache:squid:2.7:stable3:*:*:*:*:*:*","cpe:2.3:a:squid-cache:squid:2.7:stable4:*:*:*:*:*:*","cpe:2.3:a:squid-cache:squid:2.7:stable5:*:*:*:*:*:*","cpe:2.3:a:squid-cache:squid:2.7:stable6:*:*:*:*:*:*","cpe:2.3:a:squid-cache:squid:2.7:stable7:*:*:*:*:*:*","cpe:2.3:a:squid-cache:squid:2.7:stable8:*:*:*:*:*:*","cpe:2.3:a:squid-cache:squid:2.7:stable9:*:*:*:*:*:*"],"extracted_events":[{"introduced":"2.7"},{"last_affected":"2.7"},{"introduced":"2.7-stable2"},{"last_affected":"2.7-stable2"},{"introduced":"2.7-stable3"},{"last_affected":"2.7-stable3"},{"introduced":"2.7-stable4"},{"last_affected":"2.7-stable4"},{"introduced":"2.7-stable5"},{"last_affected":"2.7-stable5"},{"introduced":"2.7-stable6"},{"last_affected":"2.7-stable6"},{"introduced":"2.7-stable7"},{"last_affected":"2.7-stable7"},{"introduced":"2.7-stable8"},{"last_affected":"2.7-stable8"},{"introduced":"2.7-stable9"},{"last_affected":"2.7-stable9"}],"source":"CPE_STRING","vendor_product":"squid-cache:squid"}]},"references":[{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2020/10/msg00005.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3RG5FGSTCAYVIJPJHIY3MRZ7NFT6HDO7/"},{"type":"WEB","url":"https://usn.ubuntu.com/4551-1/"},{"type":"ADVISORY","url":"https://github.com/squid-cache/squid/security/advisories/GHSA-qf3v-rc95-96j5"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20210312-0001/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2020/dsa-4732"},{"type":"FIX","url":"http://www.squid-cache.org/Versions/v4/changesets/squid-4-ea12a34d338b962707d5078d6d1fc7c6eb119a22.patch"},{"type":"FIX","url":"http://www.squid-cache.org/Versions/v5/changesets/squid-5-485c9a7bb1bba88754e07ad0094647ea57a6eb8d.patch"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/squid-cache/squid","events":[{"introduced":"f188960023551b2e9cb2a9df245b92bfeef37056"},{"last_affected":"6cfeb300caf423ff49a0511d8bd43a56f3418273"},{"introduced":"0"},{"fixed":"5ba5ba8c40cb11d62886ee60fe6c3646f815fdea"},{"fixed":"f4cfdb7a62168bef09f8cfa438c2a730206c82ed"}],"database_specific":{"extracted_events":[{"introduced":"3.1"},{"last_affected":"3.5.28"},{"introduced":"4.0"},{"fixed":"4.12"},{"introduced":"5.0"},{"fixed":"5.0.3"}],"source":"CPE_RANGE","cpe":"cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*"}}],"versions":["SQUID_5_0_2","SQUID_4_11","SQUID_5_0_1","SQUID_4_10","SQUID_4_9","SQUID_4_8","SQUID_4_7","M-staged-PR365","M-staged-PR370","M-staged-PR376","M-staged-PR375","SQUID_4_6","M-staged-PR373","M-staged-PR372","M-staged-PR319","M-staged-PR366","M-staged-PR351","M-staged-PR342","M-staged-PR364","M-staged-PR359","SQUID_4_5","M-staged-PR348","M-staged-PR345","SQUID_4_4","M-staged-PR314","SQUID_3_5_28","M-staged-PR306","SQUID_4_3","M-staged-PR294","M-staged-PR299","M-staged-PR295","M-staged-PR293","M-staged-PR164","SQUID_4_2","M-staged-PR276","M-staged-PR274","SQUID_3_5_27","M-staged-PR264","M-staged-PR268","M-staged-PR267","M-staged-PR266","M-staged-PR258","M-staged-PR230","M-staged-PR255","M-staged-PR252","M-staged-PR229","M-staged-PR241","M-staged-PR239","M-staged-PR242","SQUID_4_1","M-staged-PR235","M-staged-PR238","M-staged-PR218","M-staged-PR237","M-staged-PR227","M-staged-PR202","M-staged-PR225","SQUID_4_0_25","M-staged-PR220","M-staged-PR221","M-staged-PR210","M-staged-PR209","M-staged-PR208","M-staged-PR198","M-staged-PR206","M-staged-PR182","M-staged-PR195","M-staged-PR199","M-staged-PR200","M-staged-PR196","M-staged-PR193","M-staged-PR181","M-staged-PR189","M-staged-PR176","M-staged-PR186","SQUID_4_0_24","M-staged-PR179","M-staged-PR170","M-staged-PR161","SQUID_4_0_23","SQUID_4_0_22","SQUID_4_0_21","SQUID_3_5_26","SQUID_4_0_20","SQUID_3_5_25","SQUID_4_0_19","SQUID_3_5_24","SQUID_4_0_18","SQUID_3_5_23","SQUID_4_0_17","SQUID_4_0_16","SQUID_3_5_22","SQUID_4_0_15","SQUID_3_5_21","SQUID_4_0_14","SQUID_4_0_13","SQ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