{"schemaVersion":3,"id":"CVE-2023-49288","aliases":["ALPINE-CVE-2023-49288","UBUNTU-CVE-2023-49288","DEBIAN-CVE-2023-49288"],"status":"published","duplicateOf":null,"title":null,"description":"Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Affected versions of squid are subject to a a Use-After-Free bug which can lead to a Denial of Service attack via collapsed forwarding. All versions of Squid from 3.5 up to and including 5.9 configured with \"collapsed_forwarding on\" are vulnerable. Configurations with \"collapsed_forwarding off\" or without a \"collapsed_forwarding\" directive are not vulnerable. This bug is fixed by Squid version 6.0.1. Users are advised to upgrade. Users unable to upgrade should remove all collapsed_forwarding lines from their squid.conf.","dates":{"published":"2023-12-04T22:49:31.317Z","modified":"2025-02-13T17:18:39.710Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.6,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":8.6,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Alpine","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":10,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · 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Any operations using the original pointer are no longer valid because the memory \"belongs\" to the code that operates on the new pointer.","type":"weakness","status":"Stable","abstraction":"Variant","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/416.html"}],"affected":[{"vendor":"alpine","product":"squid","name":"squid","label":"squid","ecosystem":"Alpine Linux","cpePart":null,"purl":"pkg:apk/alpine/squid","purlType":"apk","versions":[{"text":"≥ 3.5, < 6.1-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 3.5, < 6.1-r0","eol":null,"hubHref":null},{"vendor":"debian","product":"squid","name":"squid","label":"squid","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/squid","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 6.1-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 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