CVE-2016-4423

Published: 01 June 2016

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.

Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
symfony
Launchpad, Ubuntu, Debian
Upstream
Released (2.8.6+dfsg-1)
Ubuntu 20.10 (Groovy Gorilla) Not vulnerable
(3.4.15+dfsg-2ubuntu4)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(3.4.15+dfsg-2ubuntu4)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(3.4.6+dfsg-1)
Ubuntu 16.04 LTS (Xenial Xerus) Needed

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist