GHSA-whgv-8cg3-7hcmHighCVSS 7.5
Symphony Denial of Service Via Overlong Usernames
🔗 CVE IDs covered (1)
📋 Description
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.
🎯 Affected products12
- composer/symfony/security-http:>= 2.3.0, < 2.3.41
- composer/symfony/security-http:>= 2.4.0, < 2.7.13
- composer/symfony/security-http:>= 2.8.0, < 2.8.6
- composer/symfony/security-http:>= 3.0.0, < 3.0.6
- composer/symfony/security:>= 2.3.0, < 2.3.41
- composer/symfony/security:>= 2.4.0, < 2.7.13
- composer/symfony/security:>= 2.8.0, < 2.8.6
- composer/symfony/security:>= 3.0.0, < 3.0.6
- composer/symfony/symfony:>= 2.3.0, < 2.3.41
- composer/symfony/symfony:>= 2.4.0, < 2.7.13
- composer/symfony/symfony:>= 2.8.0, < 2.8.6
- composer/symfony/symfony:>= 3.0.0, < 3.0.6
🔗 References (9)
- https://nvd.nist.gov/vuln/detail/CVE-2016-4423
- https://github.com/symfony/symfony/pull/18733
- https://symfony.com/blog/cve-2016-4423-large-username-storage-in-session
- http://www.debian.org/security/2016/dsa-3588
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2016-4423.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2016-4423.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2016-4423.yaml
- https://symfony.com/cve-2016-4423
- https://github.com/advisories/GHSA-whgv-8cg3-7hcm