Symphony Denial of Service Via Overlong Usernames
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.
01
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2016-4423US | high7.5 | — | ||
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.… | ||||
02
references
External citations — patches, advisories, analysis.
- http://www.debian.org/security/2016/dsa-3588WEB
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2016-4423.yamlWEB
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2016-4423.yamlWEB
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2016-4423.yamlWEB
- https://github.com/symfony/symfonyPACKAGE
- https://github.com/symfony/symfony/pull/18733WEB
- https://nvd.nist.gov/vuln/detail/CVE-2016-4423ADVISORY
- https://symfony.com/blog/cve-2016-4423-large-username-storage-in-sessionWEB
scry
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