{"schemaVersion":3,"id":"USN-4289-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"squid, squid3 vulnerabilities\n\nJeriko One discovered that Squid incorrectly handled memory when connected\nto an FTP server. A remote attacker could possibly use this issue to obtain\nsensitive information from Squid memory. (CVE-2019-12528)\n\nRegis Leroy discovered that Squid incorrectly handled certain HTTP\nrequests. A remote attacker could possibly use this issue to access server\nresources prohibited by earlier security filters. (CVE-2020-8449)\n\nGuido Vranken discovered that Squid incorrectly handled certain buffer\noperations when acting as a reverse proxy. A remote attacker could use\nthis issue to cause Squid to crash, resulting in a denial of service, or\npossibly execute arbitrary code. (CVE-2020-8450)\n\nAaron Costello discovered that Squid incorrectly handled certain NTLM\nauthentication credentials. A remote attacker could possibly use this issue\nto cause Squid to crash, resulting in a denial of service. (CVE-2020-8517)","dates":{"published":"2020-02-20T15:17:45.000Z","modified":"2026-02-10T04:41:47.000Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"ubuntu","product":"squid3","name":"squid3","label":"squid3","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/squid3","purlType":"deb","versions":[{"text":"< 3.5.12-1ubuntu7.10","noFixRecorded":false,"fixedIn":null},{"text":"< 3.5.27-1ubuntu1.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.5.12-1ubuntu7.10 | < 3.5.27-1ubuntu1.5","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-4289-1","label":"ubuntu.com/security/notices/USN-4289-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2019-12528","label":"ubuntu.com/security/CVE-2019-12528","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-8449","label":"ubuntu.com/security/CVE-2020-8449","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-8450","label":"ubuntu.com/security/CVE-2020-8450","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-8517","label":"ubuntu.com/security/CVE-2020-8517","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2019-12528","CVE-2020-8449","CVE-2020-8450","CVE-2020-8517"],"downstream":[],"duplicates":[],"related":["CVE-2019-12528","CVE-2020-8449","CVE-2020-8450","CVE-2020-8517"]},"timeline":[{"kind":"published","date":"2020-02-20T15:17:45.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-02-10T04:41:47.000Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T06:19:43.998Z","stale":false,"partial":false}}