{"schemaVersion":3,"id":"USN-6728-3","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"squid vulnerability\n\nUSN-6728-1 fixed vulnerabilities in Squid. The fix for CVE-2023-5824 caused\nSquid to crash in certain environments on Ubuntu 20.04 LTS and was disabled\nin USN-6728-2. The problematic fix for CVE-2023-5824 has now been corrected\nand reinstated in this update.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Joshua Rogers discovered that Squid incorrectly handled collapsed\n forwarding. A remote attacker could possibly use this issue to cause Squid\n to crash, resulting in a denial of service. This issue only affected Ubuntu\n 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2023-49288)\n\n Joshua Rogers discovered that Squid incorrectly handled certain structural\n elements. A remote attacker could possibly use this issue to cause Squid to\n crash, resulting in a denial of service. (CVE-2023-5824)\n\n Joshua Rogers discovered that Squid incorrectly handled Cache Manager error\n responses. A remote trusted client can possibly use this issue to cause\n Squid to crash, resulting in a denial of service. (CVE-2024-23638)\n\n Joshua Rogers discovered that Squid incorrectly handled the HTTP Chunked\n decoder. A remote attacker could possibly use this issue to cause Squid to\n stop responding, resulting in a denial of service. (CVE-2024-25111)\n\n Joshua Rogers discovered that Squid incorrectly handled HTTP header\n parsing. A remote trusted client can possibly use this issue to cause\n Squid to crash, resulting in a denial of service. (CVE-2024-25617)","dates":{"published":"2024-04-23T11:20:04.000Z","modified":"2026-04-27T17:11:06.117Z","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":"squid","name":"squid","label":"squid","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/squid","purlType":"deb","versions":[{"text":"< 4.10-1ubuntu1.12","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.10-1ubuntu1.12","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-6728-3","label":"ubuntu.com/security/notices/USN-6728-3","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-5824","label":"ubuntu.com/security/CVE-2023-5824","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2023-49288","label":"ubuntu.com/security/CVE-2023-49288","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://launchpad.net/bugs/2060880","label":"launchpad.net/bugs/2060880","hostname":"launchpad.net","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2023-49288","CVE-2023-5824"],"downstream":[],"duplicates":[],"related":["CVE-2023-49288","CVE-2023-5824"]},"timeline":[{"kind":"published","date":"2024-04-23T11:20:04.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-27T17:11:06.117Z","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":"2026-10-19T13:23:49.124Z","stale":false,"partial":false}}