{"id":"UBUNTU-CVE-2018-6521","details":"The sqlauth module in SimpleSAMLphp before 1.15.2 relies on the MySQL utf8 charset, which truncates queries upon encountering four-byte characters. There might be a scenario in which this allows remote attackers to bypass intended access restrictions.","modified":"2025-10-24T04:46:54Z","published":"2018-02-02T01:29:00Z","upstream":["CVE-2018-6521"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-6521"},{"type":"REPORT","url":"https://simplesamlphp.org/security/201801-03"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-6521"}],"affected":[{"package":{"name":"simplesamlphp","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/simplesamlphp@1.14.0-1ubuntu2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.13.2-1","1.14.0-1","1.14.0-1ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.14.0-1ubuntu2","binary_name":"simplesamlphp"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-6521.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"low"}]}