UBUNTU-CVE-2016-4423
- Source
- https://ubuntu.com/security/CVE-2016-4423
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-4423.json
- JSON Data
- https://api.osv.dev/v1/vulns/UBUNTU-CVE-2016-4423
- Upstream
- Published
- 2016-06-01T22:59:00Z
- Modified
- 2025-07-18T16:43:30Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Ubuntu - medium
- Summary
- [none]
- Details
-
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.
- References