{"id":"CVE-2020-14058","details":"An issue was discovered in Squid before 4.12 and 5.x before 5.0.3. Due to use of a potentially dangerous function, Squid and the default certificate validation helper are vulnerable to a Denial of Service when opening a TLS connection to an attacker-controlled server for HTTPS. This occurs because unrecognized error values are mapped to NULL, but later code expects that each error value is mapped to a valid error string.","modified":"2026-04-10T04:22:30.080342Z","published":"2020-06-30T19:15:11.130Z","related":["ALSA-2020:4743","MGASA-2020-0332"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3RG5FGSTCAYVIJPJHIY3MRZ7NFT6HDO7/"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20210312-0001/"},{"type":"ADVISORY","url":"http://www.squid-cache.org/Advisories/SQUID-2020_6.txt"},{"type":"FIX","url":"http://www.squid-cache.org/Versions/v4/changesets/squid-4-93f5fda134a2a010b84ffedbe833d670e63ba4be.patch"},{"type":"FIX","url":"http://www.squid-cache.org/Versions/v5/changesets/squid-5-c6d1a4f6a2cbebceebc8a3fcd8f539ceb7b7f723.patch"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/squid-cache/squid","events":[{"introduced":"f188960023551b2e9cb2a9df245b92bfeef37056"},{"last_affected":"6cfeb300caf423ff49a0511d8bd43a56f3418273"},{"introduced":"0"},{"fixed":"5ba5ba8c40cb11d62886ee60fe6c3646f815fdea"},{"introduced":"0"},{"fixed":"f4cfdb7a62168bef09f8cfa438c2a730206c82ed"}],"database_specific":{"versions":[{"introduced":"3.1"},{"last_affected":"3.5.28"},{"introduced":"4.0"},{"fixed":"4.12"},{"introduced":"5.0"},{"fixed":"5.0.3"}]}}],"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-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_0_1","SQUID_3_5_0_2","SQUID_3_5_0_3","SQUID_3_5_0_4","SQUID_3_5_1","SQUID_3_5_10","SQUID_3_5_11","SQUID_3_5_12","SQUID_3_5_13","SQUID_3_5_14","SQUID_3_5_15","SQUID_3_5_16","SQUID_3_5_17","SQUID_3_5_18","SQUID_3_5_19","SQUID_3_5_2","SQUID_3_5_20","SQUID_3_5_21","SQUID_3_5_22","SQUID_3_5_23","SQUID_3_5_24","SQUID_3_5_25","SQUID_3_5_26","SQUID_3_5_27","SQUID_3_5_28","SQUID_3_5_3","SQUID_3_5_4","SQUID_3_5_5","SQUID_3_5_6","SQUID_3_5_7","SQUID_3_5_8","SQUID_3_5_9","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_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","take00"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-14058.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"31"}]}]}}],"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"}]}