CVE-2018-11407
CRITICAL9.8EPSS 0.14%Symfony Authentication Bypass
Published: 5/14/2022Modified: 5/27/2026
Description
An issue was discovered in the Ldap component in Symfony 2.8.x before 2.8.37, 3.3.x before 3.3.17, 3.4.x before 3.4.7, and 4.0.x before 4.0.7. It allows remote attackers to bypass authentication by logging in with a "null" password and valid username, which triggers an unauthenticated bind. NOTE: this issue exists because of an incomplete fix for CVE-2016-2403.
Affected packages (4)
- Debian/symfonyfrom 0, < 3.4.12+dfsg-1
- Packagist/symfony/security>= 2.8.0, < 2.8.37
- Packagist/symfony/security-core>= 2.8.0, < 2.8.37
- Packagist/symfony/symfony>= 2.8.0, < 2.8.37
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
References (10)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2018-11407
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2018-11407
- PATCHhttps://github.com/symfony/symfony
- WEBhttps://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-core/CVE-2018-11407.yaml
- WEBhttps://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2018-11407.yaml
- WEBhttps://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2018-11407.yaml
- WEBhttps://github.com/symfony/symfony/commit/b46fc93785d37ffa5d706a82cd175b33ce8f2934
- WEBhttps://github.com/symfony/symfony/pull/27377
- WEBhttps://symfony.com/blog/cve-2018-11407-unauthorized-access-on-a-misconfigured-ldap-server-when-using-an-empty-password
- WEBhttps://symfony.com/cve-2018-11407