{"id":"UBUNTU-CVE-2015-3455","details":"Squid 3.2.x before 3.2.14, 3.3.x before 3.3.14, 3.4.x before 3.4.13, and 3.5.x before 3.5.4, when configured with client-first SSL-bump, do not properly validate the domain or hostname fields of X.509 certificates, which allows man-in-the-middle attackers to spoof SSL servers via a valid certificate.","modified":"2025-09-08T16:43:22Z","published":"2015-05-18T15:59:00Z","upstream":["CVE-2015-3455"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2015-3455"},{"type":"REPORT","url":"http://www.squid-cache.org/Advisories/SQUID-2015_1.txt"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2015/04/30/2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2015-3455"}],"affected":[{"package":{"name":"squid3","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/squid3@3.3.8-1ubuntu6.6?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.8-1ubuntu6.6"}]}],"versions":["3.3.8-1ubuntu3","3.3.8-1ubuntu4","3.3.8-1ubuntu5","3.3.8-1ubuntu6","3.3.8-1ubuntu6.1","3.3.8-1ubuntu6.2","3.3.8-1ubuntu6.3","3.3.8-1ubuntu6.4"],"ecosystem_specific":{"binaries":[{"binary_name":"squid","binary_version":"3.3.8-1ubuntu6.6"},{"binary_name":"squid-cgi","binary_version":"3.3.8-1ubuntu6.6"},{"binary_name":"squid-purge","binary_version":"3.3.8-1ubuntu6.6"},{"binary_name":"squid3","binary_version":"3.3.8-1ubuntu6.6"},{"binary_name":"squid3-common","binary_version":"3.3.8-1ubuntu6.6"},{"binary_name":"squidclient","binary_version":"3.3.8-1ubuntu6.6"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-3455.json"}}],"schema_version":"1.7.3","severity":[{"type":"Ubuntu","score":"negligible"}]}