{"id":"GHSA-35c5-28pg-2qg4","aliases":["CVE-2018-11407"],"title":"Symfony Authentication Bypass","titleSource":"OSV","descriptionSource":"OSV","declaredSeverity":"CRITICAL","description":"An issue was discovered in the LDAP component in Symfony 2.8.x before 2.8.37, 3.3.x before 3.3.17, 3.4.x before 3.4.7, and 4.0.x before 4.0.7. It allows remote attackers to bypass authentication by logging in with a \"null\" password and valid username, which triggers an unauthenticated bind.  **NOTE:** this issue exists because of an incomplete fix for CVE-2016-2403.","severity":"critical","score":9.8,"published":"2022-05-14T03:10:52.000Z","modified":"2024-04-25T22:28:47.853Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"symfony/security-core","sources":[{"name":"OSV · GHSA-35c5-28pg-2qg4","url":"https://osv.dev/vulnerability/GHSA-35c5-28pg-2qg4"}],"ranges":[{"events":[{"introduced":"2.8.0"},{"fixed":"2.8.37"}],"type":"ECOSYSTEM"}],"versions":["v2.8.0","v2.8.1","v2.8.10","v2.8.11","v2.8.12","v2.8.13","v2.8.14","v2.8.15","v2.8.16","v2.8.17","v2.8.18","v2.8.19","v2.8.2","v2.8.20","v2.8.21","v2.8.22","v2.8.23","v2.8.24","v2.8.25","v2.8.26","v2.8.27","v2.8.28","v2.8.29","v2.8.3","v2.8.30","v2.8.31","v2.8.32","v2.8.33","v2.8.34","v2.8.35","v2.8.36","v2.8.4","v2.8.5","v2.8.6","v2.8.7","v2.8.8","v2.8.9"],"fixed":["2.8.37"]},{"ecosystem":"Packagist","name":"symfony/security-core","sources":[{"name":"OSV · GHSA-35c5-28pg-2qg4","url":"https://osv.dev/vulnerability/GHSA-35c5-28pg-2qg4"}],"ranges":[{"events":[{"introduced":"3.0.0"},{"fixed":"3.3.17"}],"type":"ECOSYSTEM"}],"versions":["v3.0.0","v3.0.1","v3.0.2","v3.0.3","v3.0.4","v3.0.5","v3.0.6","v3.0.7","v3.0.8","v3.0.9","v3.1.0","v3.1.0-BETA1","v3.1.0-RC1","v3.1.1","v3.1.10","v3.1.2","v3.1.3","v3.1.4","v3.1.5","v3.1.6","v3.1.7","v3.1.8","v3.1.9","v3.2.0","v3.2.0-BETA1","v3.2.0-RC1","v3.2.0-RC2","v3.2.1","v3.2.10","v3.2.11","v3.2.12","v3.2.13","v3.2.14","v3.2.2","v3.2.3","v3.2.4","v3.2.5","v3.2.6","v3.2.7","v3.2.8","v3.2.9","v3.3.0","v3.3.0-BETA1","v3.3.0-RC1","v3.3.1","v3.3.10","v3.3.11","v3.3.12","v3.3.13","v3.3.14","v3.3.15","v3.3.16","v3.3.2","v3.3.3","v3.3.4","v3.3.5","v3.3.6","v3.3.7","v3.3.8","v3.3.9"],"fixed":["3.3.17"]},{"ecosystem":"Packagist","name":"symfony/security-core","sources":[{"name":"OSV · GHSA-35c5-28pg-2qg4","url":"https://osv.dev/vulnerability/GHSA-35c5-28pg-2qg4"}],"ranges":[{"events":[{"introduced":"3.4.0"},{"fixed":"3.4.7"}],"type":"ECOSYSTEM"}],"versions":["v3.4.0","v3.4.1","v3.4.2","v3.4.3","v3.4.4","v3.4.5","v3.4.6"],"fixed":["3.4.7"]},{"ecosystem":"Packagist","name":"symfony/security-core","sources":[{"name":"OSV · GHSA-35c5-28pg-2qg4","url":"https://osv.dev/vulnerability/GHSA-35c5-28pg-2qg4"}],"ranges":[{"events":[{"introduced":"4.0.0"},{"fixed":"4.0.7"}],"type":"ECOSYSTEM"}],"versions":["v4.0.0","v4.0.1","v4.0.2","v4.0.3","v4.0.4","v4.0.5","v4.0.6"],"fixed":["4.0.7"]},{"ecosystem":"Packagist","name":"symfony/security","sources":[{"name":"OSV · GHSA-35c5-28pg-2qg4","url":"https://osv.dev/vulnerability/GHSA-35c5-28pg-2qg4"}],"ranges":[{"events":[{"introduced":"2.8.0"},{"fixed":"2.8.37"}],"type":"ECOSYSTEM"}],"versions":["v2.8.0","v2.8.1","v2.8.10","v2.8.11","v2.8.12","v2.8.13","v2.8.14","v2.8.15","v2.8.16","v2.8.17","v2.8.18","v2.8.19","v2.8.2","v2.8.20","v2.8.21","v2.8.22","v2.8.23","v2.8.24","v2.8.25","v2.8.26","v2.8.27","v2.8.28","v2.8.29","v2.8.3","v2.8.30","v2.8.31","v2.8.32","v2.8.33","v2.8.34","v2.8.35","v2.8.36","v2.8.4","v2.8.5","v2.8.6","v2.8.7","v2.8.8","v2.8.9"],"fixed":["2.8.37"]},{"ecosystem":"Packagist","name":"symfony/security","sources":[{"name":"OSV · GHSA-35c5-28pg-2qg4","url":"https://osv.dev/vulnerability/GHSA-35c5-28pg-2qg4"}],"ranges":[{"events":[{"introduced":"3.0.0"},{"fixed":"3.3.17"}],"type":"ECOSYSTEM"}],"versions":["v3.0.0","v3.0.1","v3.0.2","v3.0.3","v3.0.4","v3.0.5","v3.0.6","v3.0.7","v3.0.8","v3.0.9","v3.1.0","v3.1.0-BETA1","v3.1.0-RC1","v3.1.1","v3.1.10","v3.1.2","v3.1.3","v3.1.4","v3.1.5","v3.1.6","v3.1.7","v3.1.8","v3.1.9","v3.2.0","v3.2.0-BETA1","v3.2.0-RC1","v3.2.0-RC2","v3.2.1","v3.2.10","v3.2.11","v3.2.12","v3.2.13","v3.2.14","v3.2.2","v3.2.3","v3.2.4","v3.2.5","v3.2.6","v3.2.7","v3.2.8","v3.2.9","v3.3.0","v3.3.0-BETA1","v3.3.0-RC1","v3.3.1","v3.3.10","v3.3.11","v3.3.12","v3.3.13","v3.3.14","v3.3.15","v3.3.16","v3.3.2","v3.3.3","v3.3.4","v3.3.5","v3.3.6","v3.3.7","v3.3.8","v3.3.9"],"fixed":["3.3.17"]},{"ecosystem":"Packagist","name":"symfony/security","sources":[{"name":"OSV · GHSA-35c5-28pg-2qg4","url":"https://osv.dev/vulnerability/GHSA-35c5-28pg-2qg4"}],"ranges":[{"events":[{"introduced":"3.4.0"},{"fixed":"3.4.7"}],"type":"ECOSYSTEM"}],"versions":["v3.4.0","v3.4.1","v3.4.2","v3.4.3","v3.4.4","v3.4.5","v3.4.6"],"fixed":["3.4.7"]},{"ecosystem":"Packagist","name":"symfony/security","sources":[{"name":"OSV · GHSA-35c5-28pg-2qg4","url":"https://osv.dev/vulnerability/GHSA-35c5-28pg-2qg4"}],"ranges":[{"events":[{"introduced":"4.0.0"},{"fixed":"4.0.7"}],"type":"ECOSYSTEM"}],"versions":["v4.0.0","v4.0.1","v4.0.2","v4.0.3","v4.0.4","v4.0.5","v4.0.6"],"fixed":["4.0.7"]},{"ecosystem":"Packagist","name":"symfony/symfony","sources":[{"name":"OSV · GHSA-35c5-28pg-2qg4","url":"https://osv.dev/vulnerability/GHSA-35c5-28pg-2qg4"}],"ranges":[{"events":[{"introduced":"2.8.0"},{"fixed":"2.8.37"}],"type":"ECOSYSTEM"}],"versions":["v2.8.0","v2.8.1","v2.8.10","v2.8.11","v2.8.12","v2.8.13","v2.8.14","v2.8.15","v2.8.16","v2.8.17","v2.8.18","v2.8.19","v2.8.2","v2.8.20","v2.8.21","v2.8.22","v2.8.23","v2.8.24","v2.8.25","v2.8.26","v2.8.27","v2.8.28","v2.8.29","v2.8.3","v2.8.30","v2.8.31","v2.8.32","v2.8.33","v2.8.34","v2.8.35","v2.8.36","v2.8.4","v2.8.5","v2.8.6","v2.8.7","v2.8.8","v2.8.9"],"fixed":["2.8.37"]},{"ecosystem":"Packagist","name":"symfony/symfony","sources":[{"name":"OSV · GHSA-35c5-28pg-2qg4","url":"https://osv.dev/vulnerability/GHSA-35c5-28pg-2qg4"}],"ranges":[{"events":[{"introduced":"3.0.0"},{"fixed":"3.3.17"}],"type":"ECOSYSTEM"}],"versions":["v3.0.0","v3.0.1","v3.0.2","v3.0.3","v3.0.4","v3.0.5","v3.0.6","v3.0.7","v3.0.8","v3.0.9","v3.1.0","v3.1.0-BETA1","v3.1.0-RC1","v3.1.1","v3.1.10","v3.1.2","v3.1.3","v3.1.4","v3.1.5","v3.1.6","v3.1.7","v3.1.8","v3.1.9","v3.2.0","v3.2.0-BETA1","v3.2.0-RC1","v3.2.0-RC2","v3.2.1","v3.2.10","v3.2.11","v3.2.12","v3.2.13","v3.2.14","v3.2.2","v3.2.3","v3.2.4","v3.2.5","v3.2.6","v3.2.7","v3.2.8","v3.2.9","v3.3.0","v3.3.0-BETA1","v3.3.0-RC1","v3.3.1","v3.3.10","v3.3.11","v3.3.12","v3.3.13","v3.3.14","v3.3.15","v3.3.16","v3.3.2","v3.3.3","v3.3.4","v3.3.5","v3.3.6","v3.3.7","v3.3.8","v3.3.9"],"fixed":["3.3.17"]},{"ecosystem":"Packagist","name":"symfony/symfony","sources":[{"name":"OSV · GHSA-35c5-28pg-2qg4","url":"https://osv.dev/vulnerability/GHSA-35c5-28pg-2qg4"}],"ranges":[{"events":[{"introduced":"3.4.0"},{"fixed":"3.4.7"}],"type":"ECOSYSTEM"}],"versions":["v3.4.0","v3.4.1","v3.4.2","v3.4.3","v3.4.4","v3.4.5","v3.4.6"],"fixed":["3.4.7"]},{"ecosystem":"Packagist","name":"symfony/symfony","sources":[{"name":"OSV · GHSA-35c5-28pg-2qg4","url":"https://osv.dev/vulnerability/GHSA-35c5-28pg-2qg4"}],"ranges":[{"events":[{"introduced":"4.0.0"},{"fixed":"4.0.7"}],"type":"ECOSYSTEM"}],"versions":["v4.0.0","v4.0.1","v4.0.2","v4.0.3","v4.0.4","v4.0.5","v4.0.6"],"fixed":["4.0.7"]}],"sourceAffected":[],"references":["https://nvd.nist.gov/vuln/detail/CVE-2018-11407","https://github.com/symfony/symfony/pull/27377","https://github.com/symfony/symfony/commit/b46fc93785d37ffa5d706a82cd175b33ce8f2934","https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-core/CVE-2018-11407.yaml","https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2018-11407.yaml","https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2018-11407.yaml","https://github.com/symfony/symfony","https://symfony.com/blog/cve-2018-11407-unauthorized-access-on-a-misconfigured-ldap-server-when-using-an-empty-password","https://symfony.com/cve-2018-11407"],"sources":[{"name":"OSV","id":"GHSA-35c5-28pg-2qg4","modified":"2024-04-25T22:28:47.853579Z","url":"https://osv.dev/vulnerability/GHSA-35c5-28pg-2qg4"}],"assessments":[{"source":"OSV","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8}],"products":[],"remediation":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T21:45:31.439Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}