The attemptAuthentication function in Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener.php
in Symfony before 2.3.41, 2.7.x before 2.7.13, 2.8.x before 2.8.6, and 3.0.x before 3.0.6 does not limit the length of a username stored in a session, which allows remote attackers to cause a denial of service (session storage consumption) via a series of authentication attempts with long, non-existent usernames.
{ "nvd_published_at": "2016-06-01T22:59:00Z", "cwe_ids": [], "severity": "HIGH", "github_reviewed": true, "github_reviewed_at": "2024-04-25T22:08:02Z" }