CVE-2016-4423

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.

Score

CVSS 3.0 7.5 High

Status

Modified - cve@mitre.org

Published

2016-06-01

Last modified

2024-08-06

Weaknesses

CWE-399

Affected products

• Debian Linux (Debian)
• Symfony (Sensiolabs)

References

• http://www.debian.org/security/2016/dsa-3588
• https://github.com/symfony/symfony/pull/18733
• https://symfony.com/blog/cve-2016-4423-large-username-storage-in-session